[C# SolidWorks API] シミュレーションを実行する

2015/5/12 Computer, SolidWorks

Simulationスタディを作成して，部品の材料特性や境界条件を設定したら，次はいよいよシミュレーションを実行しましょう．

早速，シミュレーションを実行して，応力の最小値と最大値を取得するプログラムを作成していきましょう．

実行例

シミュレーションを実行して，0番目の要素におけるミーゼス応力の最小値と最大値をダイアログに表示しています．

コード

全体のコードは以下のようになります．

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

// for SolidWorks API
using SolidWorks.Interop.cosworks;
using SolidWorks.Interop.sldworks;
using SolidWorks.Interop.swconst;

// for Debuging
using System.Diagnostics;

namespace Simulation
{
    class Program
    {
        // SolidWorks APIにアクセスするためのメンバ
        SldWorks.ISldWorks swApp;

        // Simulation APIにアクセスするためのメンバ
        ICosmosWorks COSMOSWORKS = null;

        // 部品(Part)，図面(Drawing)，アセンブリ(Assembly)の各ドキュメントにアクセスするためのメンバ
        IModelDoc2 model = default(ModelDoc2);

        // Simlation スタディにアクセスするためのメンバ
        ICWStudy study = default(CWStudy);

        void startSW()
        {
            swApp = new SldWorks.SldWorks();
            Debug.Assert(swApp != null);
            swApp.Visible = true;
        }


        void createCube(double length)
        {
            string partTemplate = swApp.GetUserPreferenceStringValue((int)swUserPreferenceStringValue_e.swDefaultTemplatePart);

            if ((partTemplate != null) && (partTemplate != ""))
            {
                model = (IModelDoc2)swApp.NewDocument(
                        partTemplate,                                // テンプレートファイルの場所
                        (int)swDwgPaperSizes_e.swDwgPaperA2size,     // ドキュメントのサイズ（A４やA2など）       
                        0.0, 0.0);


                // 正方形を描く
                ISketchManager sketchMan = model.SketchManager;
                sketchMan.InsertSketch(true);
                sketchMan.CreateCornerRectangle(0, 0, 0, length, length, 0);

                // 正方形を押し出す
                IFeatureManager featMan = model.FeatureManager;
                featMan.FeatureExtrusion3(
                    true,
                    false,
                    false,
                    (int)swEndConditions_e.swEndCondBlind,
                    (int)swEndConditions_e.swEndCondBlind,
                    length,
                    0.0,
                    false,
                    false,
                    false,
                    false,
                    0.0,
                    0.0,
                    false,
                    false,
                    false,
                    false,
                    true,
                    false,
                    false,
                    (int)swStartConditions_e.swStartSketchPlane,
                    0.0,
                    false
                );
            }
            else
            {
                Console.WriteLine("There is no part template available. Please check your options and make sure there is a part template selected, or select a new part template.");
            }
        }


        void loadSimulationAddIn()
        {
            string path_to_cosworks_dll = swApp.GetExecutablePath() + @"\Simulation\cosworks.dll";
            int errors = swApp.LoadAddIn(path_to_cosworks_dll);
            checkStatus("Load cosworks.dll: ", errors);

            string addInName = "SldWorks.Simulation";
            CwAddincallback COSMOSObject = (CwAddincallback)swApp.GetAddInObject(addInName);
            Debug.Assert(COSMOSObject != null);

            COSMOSWORKS = (ICosmosWorks)COSMOSObject.CosmosWorks;
            Debug.Assert(COSMOSWORKS != null);
        }


        void createStudy(string name, int type)
        {
            ICWModelDoc actDoc = (ICWModelDoc)COSMOSWORKS.ActiveDoc;
            Debug.Assert(actDoc != null);

            ICWStudyManager studyMgr = (ICWStudyManager)actDoc.StudyManager;
            Debug.Assert(studyMgr != null);

            int errors = 0;
            study = (ICWStudy)studyMgr.CreateNewStudy3(name,
                                                       type,
                                                       0,
                                                       out errors);

            checkStatus("createStudy", errors);
        }


        void createStaticStudy(string name)
        {
            createStudy(name, (int)swsAnalysisStudyType_e.swsAnalysisStudyTypeStatic);
        }


        void applyMaterial(int componentNum, int bodyNum, string materialName)
        {
            string materialLibrary = swApp.GetExecutablePath() + @"\lang\english\sldmaterials\solidworks materials.sldmat";

            ICWSolidManager SolidMgr = (ICWSolidManager)study.SolidManager;

            int errorCode = 0;
            ICWSolidComponent SolidComponent = SolidMgr.GetComponentAt(componentNum, out errorCode);

            if (errorCode == 0)
            {
                //string SolidComponentName = SolidComponent.ComponentName;
                ICWSolidBody SolidBody = (ICWSolidBody)SolidComponent.GetSolidBodyAt(bodyNum, out errorCode);
                //if (errorCode != 0) ErrorMsg("No solid body.");

                errorCode = (int)SolidBody.SetLibraryMaterial(materialLibrary, materialName);
                Debug.WriteLine("Mat: " + errorCode);
            }
            else
            {
                checkStatus("applyMaterial", errorCode);
            }
        }


        void applyFixedBC()
        {
            if (model == null) { model = (IModelDoc2)swApp.ActiveDoc; }

            // 固定する面を選択する
            ISelectionMgr selectionMgr = (ISelectionMgr)model.SelectionManager;
            bool isSelected = model.Extension.SelectByID2("", "FACE", 2.81519136727046E-02, 0, 4.24519591314118E-02, false, 0, null, 0);

            if (isSelected)
            {
                // 選択された面のオブジェクトを取得する      
                object selectedFace = (object)selectionMgr.GetSelectedObject6(1, -1);
                object[] fixedFaces = { selectedFace };

                // 境界条件を設定する
                ICWLoadsAndRestraintsManager BCMgr = (ICWLoadsAndRestraintsManager)study.LoadsAndRestraintsManager;
                int errorCode = 0;
                ICWRestraint restraint = (ICWRestraint)BCMgr.AddRestraint((int)swsRestraintType_e.swsRestraintTypeFixed,
                                                                         fixedFaces, null, out errorCode);

                checkStatus("Apply Fixed BC", errorCode);
            }

            model.ClearSelection2(true);
        }


        void applyDisplacementBC()
        {
            if (model == null) { model = (IModelDoc2)swApp.ActiveDoc; }

            // 変位させる面を選択する
            ISelectionMgr selectionMgr = (ISelectionMgr)model.SelectionManager;
            bool isSelected = model.Extension.SelectByID2("", "FACE", 5.89200124707077E-02, 9.99999999999659E-02, 5.97631804628236E-02, false, 0, null, 0);

            if (isSelected)
            {
                // 選択された面のオブジェクトを取得する  
                object selectedFace = (object)selectionMgr.GetSelectedObject6(1, -1);
                object[] displacedFaces = { selectedFace };

                // 境界条件を設定する
                ICWLoadsAndRestraintsManager BCMgr = (ICWLoadsAndRestraintsManager)study.LoadsAndRestraintsManager;
                int errorCode = 0;
                ICWRestraint restraint = (ICWRestraint)BCMgr.AddRestraint((int)swsRestraintType_e.swsRestraintTypeFlatFace, displacedFaces, null, out errorCode);
                checkStatus("Add Restraint", errorCode);

                restraint.RestraintBeginEdit();
                restraint.SetTranslationComponentsValues(0, 0, 1, 0, 0, 10);
                restraint.Unit = (int)swsLinearUnit_e.swsLinearUnitMillimeters;
                errorCode = restraint.RestraintEndEdit();

                checkStatus("Apply Displacement BC", errorCode);
            }

            model.ClearSelection2(true);
        }


        void createMesh()
        {
            double averageGlobalElementSize = 0;
            double tolerance = 0;

            ICWMesh mesh = (ICWMesh)study.Mesh;
            Debug.Assert(mesh != null);

            mesh.Quality = 1;
            mesh.GetDefaultElementSizeAndTolerance(0, out averageGlobalElementSize, out tolerance);

            int errorCode = study.CreateMesh(0, averageGlobalElementSize, tolerance);
            checkStatus("Mesh failed", errorCode);

        }



        void runAnalysis()
        {
            int errorCode = study.RunAnalysis();
            checkStatus("runAnalysis", errorCode);
        }


        void showResult(int elementNum)
        {
            ICWResults result = (ICWResults)study.Results;
            int errorCode = 0;

            object[] stress = (object[])result.GetMinMaxStress((int)swsStressComponent_e.swsStressComponentVON,
                                                               elementNum,
                                                               1,
                                                               null,
                                                               (int)swsStrengthUnit_e.swsStrengthUnitPascal, out errorCode);
            checkStatus("getMinMaxStress", errorCode);

            swApp.SendMsgToUser("Element Number :" + elementNum + "\n" +
                                "Min Stress at " + Convert.ToString(stress[0]) + ": " + Convert.ToString(stress[1]) + "\n" +
                                "Max Stress at " + Convert.ToString(stress[2]) + ": " + Convert.ToString(stress[3]));
        }


        //　エラーが発生したときに，発生したメソッド名とエラーコードを表示するためのメソッド
        public static void checkStatus(string methodName, int code)
        {
            int success = 0;
            if (code != success)
            {
                Console.WriteLine(methodName + ": " + code);
            }
        }
        

        static void Main(string[] args)
        {
            var p = new Program();

            Console.WriteLine("Starting SolidWorks");
            p.startSW();

            Console.WriteLine("Creating a Cube");
            double length = 0.1;
            p.createCube(length);

            Console.WriteLine("Loading Simulation AddIn");
            p.loadSimulationAddIn();

            Console.WriteLine("Creating Static Study");
            string studyName = "StaticStudy";
            p.createStaticStudy(studyName);

            Console.WriteLine("Applying Materials");
            int componentNum = 0;
            int bodyNum = 0;
            string materialName = "Gray Cast Iron (SN)";
            p.applyMaterial(componentNum, bodyNum, materialName);

            Console.WriteLine("Applying Fixed BC");
            p.applyFixedBC();
            p.applyDisplacementBC();

            Console.WriteLine("Creating Mesh");
            p.createMesh();

            Console.WriteLine("Running Analysis");
            p.runAnalysis();

            Console.WriteLine("Getting MinMaxStresses");
            int elementNum = 0;
            p.showResult(elementNum);
        }
    }
}

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using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

// for SolidWorks API

using SolidWorks.Interop.cosworks;

using SolidWorks.Interop.sldworks;

using SolidWorks.Interop.swconst;

// for Debuging

using System.Diagnostics;

namespace Simulation

{

class Program

{

// SolidWorks APIにアクセスするためのメンバ

SldWorks.ISldWorks swApp;

// Simulation APIにアクセスするためのメンバ

ICosmosWorks COSMOSWORKS = null;

// 部品(Part)，図面(Drawing)，アセンブリ(Assembly)の各ドキュメントにアクセスするためのメンバ

IModelDoc2 model = default(ModelDoc2);

// Simlation スタディにアクセスするためのメンバ

ICWStudy study = default(CWStudy);

void startSW()

{

swApp = new SldWorks.SldWorks();

Debug.Assert(swApp != null);

swApp.Visible = true;

}

void createCube(double length)

{

string partTemplate = swApp.GetUserPreferenceStringValue((int)swUserPreferenceStringValue_e.swDefaultTemplatePart);

if ((partTemplate != null) && (partTemplate != ""))

{

model = (IModelDoc2)swApp.NewDocument(

partTemplate, // テンプレートファイルの場所

(int)swDwgPaperSizes_e.swDwgPaperA2size, // ドキュメントのサイズ（A４やA2など）

0.0, 0.0);

// 正方形を描く

ISketchManager sketchMan = model.SketchManager;

sketchMan.InsertSketch(true);

sketchMan.CreateCornerRectangle(0, 0, 0, length, length, 0);

// 正方形を押し出す

IFeatureManager featMan = model.FeatureManager;

featMan.FeatureExtrusion3(

true,

false,

(int)swEndConditions_e.swEndCondBlind,

length,

0.0,

false,

0.0,

false,

true,

false,

(int)swStartConditions_e.swStartSketchPlane,

0.0,

false

);

}

else

{

Console.WriteLine("There is no part template available. Please check your options and make sure there is a part template selected, or select a new part template.");

}

void loadSimulationAddIn()

{

string path_to_cosworks_dll = swApp.GetExecutablePath() + @"\Simulation\cosworks.dll";

int errors = swApp.LoadAddIn(path_to_cosworks_dll);

checkStatus("Load cosworks.dll: ", errors);

string addInName = "SldWorks.Simulation";

CwAddincallback COSMOSObject = (CwAddincallback)swApp.GetAddInObject(addInName);

Debug.Assert(COSMOSObject != null);

COSMOSWORKS = (ICosmosWorks)COSMOSObject.CosmosWorks;

Debug.Assert(COSMOSWORKS != null);

}

void createStudy(string name, int type)

{

ICWModelDoc actDoc = (ICWModelDoc)COSMOSWORKS.ActiveDoc;

Debug.Assert(actDoc != null);

ICWStudyManager studyMgr = (ICWStudyManager)actDoc.StudyManager;

Debug.Assert(studyMgr != null);

int errors = 0;

study = (ICWStudy)studyMgr.CreateNewStudy3(name,

type,

out errors);

checkStatus("createStudy", errors);

}

void createStaticStudy(string name)

{

createStudy(name, (int)swsAnalysisStudyType_e.swsAnalysisStudyTypeStatic);

}

void applyMaterial(int componentNum, int bodyNum, string materialName)

{

string materialLibrary = swApp.GetExecutablePath() + @"\lang\english\sldmaterials\solidworks materials.sldmat";

ICWSolidManager SolidMgr = (ICWSolidManager)study.SolidManager;

int errorCode = 0;

ICWSolidComponent SolidComponent = SolidMgr.GetComponentAt(componentNum, out errorCode);

if (errorCode == 0)

{

//string SolidComponentName = SolidComponent.ComponentName;

ICWSolidBody SolidBody = (ICWSolidBody)SolidComponent.GetSolidBodyAt(bodyNum, out errorCode);

//if (errorCode != 0) ErrorMsg("No solid body.");

errorCode = (int)SolidBody.SetLibraryMaterial(materialLibrary, materialName);

Debug.WriteLine("Mat: " + errorCode);

}

else

{

checkStatus("applyMaterial", errorCode);

}

void applyFixedBC()

{

if (model == null) { model = (IModelDoc2)swApp.ActiveDoc; }

// 固定する面を選択する

ISelectionMgr selectionMgr = (ISelectionMgr)model.SelectionManager;

bool isSelected = model.Extension.SelectByID2("", "FACE", 2.81519136727046E-02, 0, 4.24519591314118E-02, false, 0, null, 0);

if (isSelected)

{

// 選択された面のオブジェクトを取得する

object selectedFace = (object)selectionMgr.GetSelectedObject6(1, -1);

object[] fixedFaces = { selectedFace };

// 境界条件を設定する

ICWLoadsAndRestraintsManager BCMgr = (ICWLoadsAndRestraintsManager)study.LoadsAndRestraintsManager;

int errorCode = 0;

ICWRestraint restraint = (ICWRestraint)BCMgr.AddRestraint((int)swsRestraintType_e.swsRestraintTypeFixed,

fixedFaces, null, out errorCode);

checkStatus("Apply Fixed BC", errorCode);

}

model.ClearSelection2(true);

}

void applyDisplacementBC()

{

if (model == null) { model = (IModelDoc2)swApp.ActiveDoc; }

// 変位させる面を選択する

ISelectionMgr selectionMgr = (ISelectionMgr)model.SelectionManager;

bool isSelected = model.Extension.SelectByID2("", "FACE", 5.89200124707077E-02, 9.99999999999659E-02, 5.97631804628236E-02, false, 0, null, 0);

if (isSelected)

{

// 選択された面のオブジェクトを取得する

object selectedFace = (object)selectionMgr.GetSelectedObject6(1, -1);

object[] displacedFaces = { selectedFace };

// 境界条件を設定する

ICWLoadsAndRestraintsManager BCMgr = (ICWLoadsAndRestraintsManager)study.LoadsAndRestraintsManager;

int errorCode = 0;

ICWRestraint restraint = (ICWRestraint)BCMgr.AddRestraint((int)swsRestraintType_e.swsRestraintTypeFlatFace, displacedFaces, null, out errorCode);

checkStatus("Add Restraint", errorCode);

restraint.RestraintBeginEdit();

restraint.SetTranslationComponentsValues(0, 0, 1, 0, 0, 10);

restraint.Unit = (int)swsLinearUnit_e.swsLinearUnitMillimeters;

errorCode = restraint.RestraintEndEdit();

checkStatus("Apply Displacement BC", errorCode);

}

model.ClearSelection2(true);

}

void createMesh()

{

double averageGlobalElementSize = 0;

double tolerance = 0;

ICWMesh mesh = (ICWMesh)study.Mesh;

Debug.Assert(mesh != null);

mesh.Quality = 1;

mesh.GetDefaultElementSizeAndTolerance(0, out averageGlobalElementSize, out tolerance);

int errorCode = study.CreateMesh(0, averageGlobalElementSize, tolerance);

checkStatus("Mesh failed", errorCode);

}

void runAnalysis()

{

int errorCode = study.RunAnalysis();

checkStatus("runAnalysis", errorCode);

}

void showResult(int elementNum)

{

ICWResults result = (ICWResults)study.Results;

int errorCode = 0;

object[] stress = (object[])result.GetMinMaxStress((int)swsStressComponent_e.swsStressComponentVON,

elementNum,

null,

(int)swsStrengthUnit_e.swsStrengthUnitPascal, out errorCode);

checkStatus("getMinMaxStress", errorCode);

swApp.SendMsgToUser("Element Number :" + elementNum + "\n" +

"Min Stress at " + Convert.ToString(stress[0]) + ": " + Convert.ToString(stress[1]) + "\n" +

"Max Stress at " + Convert.ToString(stress[2]) + ": " + Convert.ToString(stress[3]));

}

//　エラーが発生したときに，発生したメソッド名とエラーコードを表示するためのメソッド

public static void checkStatus(string methodName, int code)

{

int success = 0;

if (code != success)

{

Console.WriteLine(methodName + ": " + code);

}

static void Main(string[] args)

{

var p = new Program();

Console.WriteLine("Starting SolidWorks");

p.startSW();

Console.WriteLine("Creating a Cube");

double length = 0.1;

p.createCube(length);

Console.WriteLine("Loading Simulation AddIn");

p.loadSimulationAddIn();

Console.WriteLine("Creating Static Study");

string studyName = "StaticStudy";

p.createStaticStudy(studyName);

Console.WriteLine("Applying Materials");

int componentNum = 0;

int bodyNum = 0;

string materialName = "Gray Cast Iron (SN)";

p.applyMaterial(componentNum, bodyNum, materialName);

Console.WriteLine("Applying Fixed BC");

p.applyFixedBC();

p.applyDisplacementBC();

Console.WriteLine("Creating Mesh");

p.createMesh();

Console.WriteLine("Running Analysis");

p.runAnalysis();

Console.WriteLine("Getting MinMaxStresses");

int elementNum = 0;

p.showResult(elementNum);

}

解説 : runAnalysis

runAnalysisは，シミュレーションを実行するためのメソッドです．

void runAnalysis()
{
    int errorCode = study.RunAnalysis();
    checkStatus("runAnalysis", errorCode);
}

void runAnalysis()

{

int errorCode = study.RunAnalysis();

checkStatus("runAnalysis", errorCode);

}

3行目
Simulation スタディで設定したシミュレーションを実行しています．
RunAnalysis

戻り値でエラーの種類を判別することができます．
swsRunAnalysisError_e

解説 : showResult

showResultは，要素番号[elementNum]を指定して，応力の最大値と最少値を表示するメソッドです．節点番号も一緒に表示します．

void showResult(int elementNum)
{
    ICWResults result = (ICWResults)study.Results;
    int errorCode = 0;

    object[] stress = (object[])result.GetMinMaxStress((int)swsStressComponent_e.swsStressComponentVON, 
                                                       elementNum, 
                                                       1, 
                                                       null, 
                                                       (int)swsStrengthUnit_e.swsStrengthUnitPascal, out errorCode);
    checkStatus("getMinMaxStress", errorCode);

    swApp.SendMsgToUser("Element Number :" + elementNum + "\n" +
                        "Min Stress at " + Convert.ToString(stress[0]) + ": " + Convert.ToString(stress[1]) + "\n" + 
                        "Max Stress at " + Convert.ToString(stress[2]) + ": " + Convert.ToString(stress[3]) );
}

void showResult(int elementNum)

{

ICWResults result = (ICWResults)study.Results;

int errorCode = 0;

object[] stress = (object[])result.GetMinMaxStress((int)swsStressComponent_e.swsStressComponentVON,

elementNum,

null,

(int)swsStrengthUnit_e.swsStrengthUnitPascal, out errorCode);

checkStatus("getMinMaxStress", errorCode);

swApp.SendMsgToUser("Element Number :" + elementNum + "\n" +

"Min Stress at " + Convert.ToString(stress[0]) + ": " + Convert.ToString(stress[1]) + "\n" +

"Max Stress at " + Convert.ToString(stress[2]) + ": " + Convert.ToString(stress[3]) );

}

3行目
Simulation結果にアクセスするためのオブジェクトを取得しています．
GetMinMaxStress

6行目
応力の種類，要素，解析のステップを指定して，指定した応力の最大値と最小値を取得しています．

System.object GetMinMaxStress (
    System.int NComponent,              // 応力の種類 (swsStressComponent_e)
    System.int NElementNumber,       // 要素番号
    System.int NStepNum,                 // 解析のステップ（静解析の場合:1)
    System.object DispPlane,             // 方向を定義するための参照図形
    System.int NUnits,                       // 単位 (swsStrengthUnit_e)
    out System.int ErrorCode             // エラー (swsResultsError_e)
)

今回は，応力の種類をミーゼス応力，単位をPaとしています．

戻り値はobject型となっていますが，実際の型はobjectの配列です．
配列の中身は，
　0番目の要素：最小応力の節点番号
　1番目の要素：最小応力の値
2番目の要素：最大応力の節点番号
　3番目の要素：最大応力の値
となります．

13行目
指定された要素のミーゼス応力の最大値と最小値を表示しています．節点番号も表示しています．
SendMsgToUser