cflin
2 years ago
16 changed files with 635 additions and 124 deletions
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set(SUB_PROJECT_NAME top-thermoelastic-Lshape-condition) |
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#file(GLOB CPP_LIST ${CMAKE_CURRENT_SOURCE_DIR}/*.cpp) |
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#add_executable(${SUB_PROJECT_NAME} ${CPP_LIST}) |
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add_executable(${SUB_PROJECT_NAME} main.cpp) |
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target_link_libraries(${SUB_PROJECT_NAME} ${PROJECT_NAME}_lib) |
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target_compile_definitions(${SUB_PROJECT_NAME} PUBLIC CONFIG_FILE="${CMAKE_CURRENT_SOURCE_DIR}/config.json") |
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target_compile_definitions(${SUB_PROJECT_NAME} PUBLIC OUTPUT_DIR="${CMAKE_SOURCE_DIR}/output") |
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target_compile_definitions(${SUB_PROJECT_NAME} PUBLIC ASSETS_DIR="${CMAKE_SOURCE_DIR}/assets") |
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target_compile_definitions(${SUB_PROJECT_NAME} PUBLIC DA_CMD) |
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{ |
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"//Topology optimization for L-shape condition": "Lshape Condition", |
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"material": { |
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"E": 2.1e11, |
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"poisson_ratio": 0.3, |
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"thermal_conductivity":43, "//unit": "W/(m*K)", |
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"thermal_expansion_coefficient": 1.21e-5, "//unit": "1/K" |
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}, |
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"topology": { |
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"max_loop": 150, |
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"volfrac": 0.5, |
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"penal": 3.0, |
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"r_min": 1.05, |
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"T_ref": 312, |
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"T_limit": 3996.52, |
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"R_E": 28, |
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"R_lambda": 28, |
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"R_beta":0 |
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}, |
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"model": { |
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"regular_model": { |
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"lx":8, |
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"ly": 30, |
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"lz": 20 |
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} |
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}, |
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"mechanical_boundary_condition":{ |
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"NBC": [ |
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{ |
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"min": [0, 1, 0], |
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"max": [1, 1, 0], |
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"val": [0.0,0.0 , -1e8] |
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} |
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|
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], |
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"DBC": [ |
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{ |
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"min": [0, 0, 1], |
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"max": [1, 0.5, 1], |
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"dir": [1, 1, 1] |
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} |
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|
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] |
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}, |
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"thermal_boundary_condition": { |
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"NBC": [ |
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{ |
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"min": [0.5, 0.2, 0.2], |
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"max": [0.5, 0.2, 0.2], |
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"heat_flux": 3.5, "//unit": "W" |
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}, |
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{ |
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"min": [0.5, 0.8, 0.2], |
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"max": [0.5, 0.8, 0.2], |
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"heat_flux": 3.5, "//unit": "W" |
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} |
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|
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], |
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"DBC": [ |
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{ |
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"min": [0, 0, 1], |
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"max": [1, 0.5, 1], |
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"temperature": 312, "//unit": "K" |
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} |
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] |
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} |
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} |
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@ -0,0 +1,171 @@ |
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//
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// Created by cflin on 6/9/23.
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//
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#include <memory> |
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#include <nlohmann/json.hpp> |
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#include "Boundary.h" |
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#include "Mesh/HeatMesh.h" |
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#include "Util.h" |
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#include "ThermoelasticTop3d.h" |
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#include "FEA/MechanicalLinearFEA.h" |
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#include "FEA/ThermalLinearFEA.h" |
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#include "TensorWrapper.h" |
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|
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int main() { |
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using namespace da::sha; |
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using top::fs_path; |
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using std::string; |
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top::fs_path output_dir(OUTPUT_DIR); |
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top::fs_path config_file(CONFIG_FILE); |
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top::fs_path assets_dir(ASSETS_DIR); |
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spdlog::info("Algo read from '{}'", config_file.string()); |
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spdlog::info("Algo output to '{}'", output_dir.string()); |
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spdlog::info("asserts dir: '{}'", assets_dir.string()); |
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|
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// read json
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std::ifstream f(config_file.c_str()); |
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if (!f) { |
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spdlog::critical("f open fail!"); |
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exit(-7); |
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} |
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nlohmann::json j_config = nlohmann::json::parse(f); |
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// set topology parameters
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auto para = std::make_shared<top::CtrlPara>(); |
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para->max_loop = j_config["topology"]["max_loop"]; |
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para->volfrac = j_config["topology"]["volfrac"]; |
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para->r_min = j_config["topology"]["r_min"]; |
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para->penal = j_config["topology"]["penal"]; |
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para->T_ref = j_config["topology"]["T_ref"]; |
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para->T_limit = j_config["topology"]["T_limit"]; |
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para->R_E = j_config["topology"]["R_E"]; |
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para->R_lambda = j_config["topology"]["R_lambda"]; |
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para->R_beta = j_config["topology"]["R_beta"]; |
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|
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// set material parameters
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double E = j_config["material"]["E"]; |
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double Poisson_ratio = j_config["material"]["poisson_ratio"]; |
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double thermal_conductivity = j_config["material"]["thermal_conductivity"]; |
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double thermal_expansion_coefficient = j_config["material"]["thermal_expansion_coefficient"]; |
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auto material = std::make_shared<top::Material>(E, Poisson_ratio, thermal_conductivity, |
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thermal_expansion_coefficient); |
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// set fea
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auto sp_mech_fea = std::make_shared<top::MechanicalLinearFEA>(material);// for mechanical
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auto sp_thermal_fea = std::make_shared<top::ThermalLinearFEA>(material);// for thermal
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// set mesh(regular)
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int len_x = j_config["model"]["regular_model"]["lx"]; |
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int len_y = j_config["model"]["regular_model"]["ly"]; |
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int len_z = j_config["model"]["regular_model"]["lz"]; |
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// NOTE: USER DEFINE GRID HERE!!! //TODO
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std::shared_ptr<top::Mesh> sp_mech_mesh; |
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std::shared_ptr<top::HeatMesh> sp_thermal_mesh; |
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std::string condition = j_config["model"]["predefined_condition"]; |
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if (condition == "L_shape") { |
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// L-shape condition
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spdlog::info("Using {}!", condition); |
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top::Tensor3d L_shape_model(len_x, len_y, len_z); |
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L_shape_model.setConstant(1); |
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for (int k = 0; k < len_z; ++k) { |
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for (int j = 0; j < len_y; ++j) { |
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for (int i = 0; i < len_x; ++i) { |
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if (j > len_y * 0.5 && k > len_z * 0.5) { |
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L_shape_model(i, j, k)=0; |
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} |
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} |
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} |
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} |
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auto &model = L_shape_model; |
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sp_mech_mesh = std::make_shared<top::Mesh>(len_x, len_y, len_z, model); |
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sp_thermal_mesh = std::make_shared<top::HeatMesh>(len_x, len_y, len_z, model); |
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} else { |
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sp_mech_mesh = std::make_shared<top::Mesh>(len_x, len_y, len_z); |
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sp_thermal_mesh = std::make_shared<top::HeatMesh>(len_x, len_y, len_z); |
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} |
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// initialize Top3d
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auto sp_mech_top3d = std::make_shared<top::Top3d>(para, sp_mech_fea, sp_mech_mesh); |
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auto sp_thermal_top3d = std::make_shared<top::Top3d>(para, sp_thermal_fea, sp_thermal_mesh); |
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// auxiliary class(Boundary) help to get boundary coordinates
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// see the comments in Boundary.h for more information
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top::Boundary mech_bdr(sp_mech_mesh); |
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top::Boundary thermal_bdr(sp_thermal_mesh); |
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{ |
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// add Dirichlet boundary, see the comments in Top3d::AddDBC for more information
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assert(j_config.count("mechanical_boundary_condition")); |
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assert(j_config["mechanical_boundary_condition"].count("DBC")); |
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assert(j_config["mechanical_boundary_condition"].count("NBC")); |
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int DBCNum = j_config["mechanical_boundary_condition"]["DBC"].size(); |
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for (int _i = 0; _i < DBCNum; ++_i) { |
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const auto &DBCI = j_config["mechanical_boundary_condition"]["DBC"][_i]; |
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Eigen::Vector3d minBBox(DBCI["min"][0], DBCI["min"][1], DBCI["min"][2]); |
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Eigen::Vector3d maxBBox(DBCI["max"][0], DBCI["max"][1], DBCI["max"][2]); |
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Eigen::Vector3i dir(DBCI["dir"][0], DBCI["dir"][1], DBCI["dir"][2]); |
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top::Dir t_dir(minBBox, maxBBox, dir); |
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sp_mech_top3d->AddDBC(mech_bdr.GetChosenCoordsByRelativeAlignedBox(t_dir.box), |
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t_dir.dir); |
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} |
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// add Neumann boundary, see the comments in Top3d::AddNBC for more information
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int NBCNum = j_config["mechanical_boundary_condition"]["NBC"].size(); |
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for (int _i = 0; _i < NBCNum; ++_i) { |
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const auto &NBCI = j_config["mechanical_boundary_condition"]["NBC"][_i]; |
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Eigen::Vector3d minBBox(NBCI["min"][0], NBCI["min"][1], NBCI["min"][2]); |
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Eigen::Vector3d maxBBox(NBCI["max"][0], NBCI["max"][1], NBCI["max"][2]); |
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Eigen::Vector3d val(NBCI["val"][0], NBCI["val"][1], NBCI["val"][2]); |
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top::Neu t_neu(minBBox, maxBBox, val); |
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Eigen::MatrixXi coords = mech_bdr.GetChosenCoordsByRelativeAlignedBox(t_neu.box); |
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sp_mech_top3d->AddNBC(coords, t_neu.val / coords.rows()); |
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} |
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} |
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{ |
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// add Dirichlet boundary, see the comments in Top3d::AddDBC for more information
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assert(j_config.count("thermal_boundary_condition")); |
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assert(j_config["thermal_boundary_condition"].count("DBC")); |
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assert(j_config["thermal_boundary_condition"].count("NBC")); |
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int DBCNum = j_config["thermal_boundary_condition"]["DBC"].size(); |
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for (int _i = 0; _i < DBCNum; ++_i) { |
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const auto &DBCI = j_config["thermal_boundary_condition"]["DBC"][_i]; |
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Eigen::Vector3d minBBox(DBCI["min"][0], DBCI["min"][1], DBCI["min"][2]); |
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Eigen::Vector3d maxBBox(DBCI["max"][0], DBCI["max"][1], DBCI["max"][2]); |
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top::Dir t_dir(minBBox, maxBBox, Eigen::Vector3i(1, 0, 0)); |
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sp_thermal_top3d->AddDBC(mech_bdr.GetChosenCoordsByRelativeAlignedBox(t_dir.box), |
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t_dir.dir, DBCI["temperature"]); |
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} |
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// add Neumann boundary, see the comments in Top3d::AddNBC for more information
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int NBCNum = j_config["thermal_boundary_condition"]["NBC"].size(); |
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for (int _i = 0; _i < NBCNum; ++_i) { |
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const auto &NBCI = j_config["thermal_boundary_condition"]["NBC"][_i]; |
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Eigen::Vector3d minBBox(NBCI["min"][0], NBCI["min"][1], NBCI["min"][2]); |
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Eigen::Vector3d maxBBox(NBCI["max"][0], NBCI["max"][1], NBCI["max"][2]); |
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Eigen::Vector3d val(NBCI["heat_flux"], 0, 0); |
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top::Neu t_neu(minBBox, maxBBox, val); |
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Eigen::MatrixXi coords = mech_bdr.GetChosenCoordsByRelativeAlignedBox(t_neu.box); |
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sp_thermal_top3d->AddNBC(coords, t_neu.val / coords.rows()); |
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} |
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} |
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// init thermoelastic top3d
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top::ThermoelasticTop3d ther_top3d(sp_mech_top3d, sp_thermal_top3d); |
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// process topology optimization
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top::Tensor3d ten_rho = ther_top3d.TopOptMainLoop(); |
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// extract txt or vtk
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write_tensor3d(output_dir / "txt" / "top_mach_regular_field_matrix.txt", ten_rho, |
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sp_mech_mesh->GetOrigin(), |
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sp_mech_mesh->GetOrigin() + sp_mech_mesh->GetLenBox()); |
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WriteTensorToVtk(output_dir / "vtk" / "top_mach_regular_field_matrix.vtk", ten_rho, |
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sp_mech_mesh); |
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WriteUToVtk(output_dir / "vtk" / "top_thermoelastic_regular_U.vtk", ther_top3d.GetU(), |
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sp_mech_mesh); |
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} |
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@ -0,0 +1,65 @@ |
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{ |
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"material": { |
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"E": 2.1e11, |
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"poisson_ratio": 0.3, |
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"thermal_conductivity":43, "unit": "W/(m*K)", |
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"thermal_expansion_coefficient": 1.21e-5, "unit": "1/K" |
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}, |
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"topology": { |
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"max_loop": 200, |
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"volfrac": 0.4, |
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"penal": 3.0, |
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"r_min": 1.1, |
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"T_ref": 0, |
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"T_limit": 28, |
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"R_E": 28, |
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"R_lambda": 28, |
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"R_beta":0 |
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}, |
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"model": { |
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"regular_model": { |
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"lx": 1, |
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"ly": 50, |
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"lz": 35 |
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}, |
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"visual_model":"2-box-refined.obj" |
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}, |
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"mechanical_boundary_condition":{ |
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"NBC": [ |
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{ |
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"min": [0, 0.44, 0], |
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"max": [1, 0.56, 0], |
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"val": [0.0, 0.0, -8.4e8] |
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} |
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], |
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"DBC": [ |
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{ |
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"min": [0, 0, 0], |
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"max": [1, 0, 1], |
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"dir": [1, 1, 1] |
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}, |
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{ |
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"min": [0, 1, 0], |
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"max": [1, 1, 1], |
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"dir": [1, 1, 1] |
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} |
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] |
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}, |
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"thermal_boundary_condition": { |
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"NBC": [ |
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{ |
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"min": [0, 1, 0.3], |
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"max": [1, 1, 0.7], |
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"heat_flux": 5, "unit": "W" |
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} |
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], |
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"DBC": [ |
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{ |
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"min": [0, 0, 0], |
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"max": [1, 0, 1], |
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"temperature": 0, "unit": "K" |
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} |
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] |
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} |
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} |
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