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Create 3D Contact Feature Example (C#)

This example shows how to create a 3D Contact feature for use in motion studies.

//---------------------------------------------------------------------------
// Preconditions:  
// 1. Verify that the specified model document exists.
// 2. In SOLIDWORKS, verify that View > MotionManager is selected.
// 3. In the IDE, right-click the project name in the Project Explorer, 
//    click Add Reference, browse to install_dir\api\redist\CLR2, and select 
//    SolidWorks.Interop.swmotionstudy.dll.
// 4. Click OK.
// 5. Open an Immediate window.
//
// Postconditions:
// 1. Selects the components to study.
// 2. Sets the static contact friction option.
// 3. Adds Solid Body Contact1 to the MotionManager design tree on the
//    Motion Study 1 tab.
// 4. Inspect the Immediate window.
//
// NOTE: Because the model is used elsewhere,
// do not save changes when closing it.

//----------------------------------------------------------------------------
using Microsoft.VisualBasic;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Diagnostics;
using SolidWorks.Interop.sldworks;
using SolidWorks.Interop.swconst;
using SolidWorks.Interop.swmotionstudy;
using System.Runtime.InteropServices;
 
namespace CreateSim3DContFeat_CSharp.csproj
{
    partial class SolidWorksMacro
    {
 
 
        public void Main()
        {
            ModelDoc2 swModel = default(ModelDoc2);
            ModelDocExtension swModelDocExt = default(ModelDocExtension);
            MotionStudyManager swMotionMgr = default(MotionStudyManager);
            MotionStudy swMotionStudy1 = default(MotionStudy);
            Simulation3DContactFeatureData swContFeat = default(Simulation3DContactFeatureData);
            bool boolstatus = false;
            Feature swFeat = default(Feature);
            int longstatus = 0;
            int longwarnings = 0;
 
            swModel = swApp.OpenDoc6("C:\\Users\\Public\\Documents\\SOLIDWORKS\\SOLIDWORKS 2018\\samples\\tutorial\\api\\beam_boltconnection.sldasm", 2, 0, ""ref longstatus, ref longwarnings);
            swApp.ActivateDoc2("beam_boltconnection"falseref longstatus);
            swModel = (ModelDoc2)swApp.ActiveDoc;
 
            swModelDocExt = swModel.Extension;
            swMotionMgr = (MotionStudyManager)swModelDocExt.GetMotionStudyManager();
            swMotionStudy1 = swMotionMgr.GetMotionStudy("Motion Study 1");
 
            if ((swMotionStudy1 == null))
            {
                Debug.Print("Motion Study 1 is not available");
            }

            swMotionStudy1.StudyType = (int)swMotionStudyType_e.swMotionStudyTypePhysicalSimulation;
 
            // Activate Motion Study 1
            swMotionStudy1.Activate();
 
            // Create the feature data object
            swContFeat = (Simulation3DContactFeatureData)swMotionStudy1.CreateDefinition((int)swFeatureNameID_e.swFmAEM3DContact);
 
            if (swContFeat == null)
            {
                Debug.Print("Failed to create feature data object");
            }
 
            SelectionMgr swSelMgr = default(SelectionMgr);
            swSelMgr = (SelectionMgr)swModel.SelectionManager;
 
            // Select the components to study
            boolstatus = swModelDocExt.SelectByID2("Beam with holes-1@beam_boltconnection""COMPONENT", 0, 0, 0, false, 0, null, 0);
            boolstatus = swModelDocExt.SelectByID2("Beam with holes-2@beam_boltconnection""COMPONENT", 0, 0, 0, true, 0, null, 0);
 
            // Set the 3D Contact components
            Component[] ContactObj = new Component[2];
            ContactObj[0] = (Component)swSelMgr.GetSelectedObject6(1, -1);
            ContactObj[1] = (Component)swSelMgr.GetSelectedObject6(2, -1);
 
            swContFeat.ContactComponents = ContactObj;
 
            // Set the static contact friction option
            swContFeat.FrictionOption = (int)swMotionContactFrictionType_e.swMotionContactFrictionFull;
 
            // Create a 3D Contact feature
            swFeat = (Feature)swMotionStudy1.CreateFeature(swContFeat);
 
            boolstatus = swModelDocExt.SelectByID2("Solid Body Contact1""SIMULATION_ELEMENT", 0, 0, 0, false, 0, null, 0);
 
            if (swFeat == null)
            {
                Debug.Print("Failed to create feature");
            }
            else
            {
                Debug.Print(swFeat.Name);
                if (swContFeat.UseRestitutionCoefficient)
                {
                    Debug.Print("  Use coefficient of restitution:");
                    Debug.Print("    Coefficient of restitution: " + swContFeat.RestitutionCoefficient);
                }
                else
                {
                    Debug.Print("  Use impact force:");
                    Debug.Print("    Exponent of exponential force: " + swContFeat.Exponent);
                    Debug.Print("    Maximum damping coefficient: " + swContFeat.MaxDamping);
                    Debug.Print("    Penetration at which maximum damping is applied: " + swContFeat.Penetration);
                    Debug.Print("    Stiffness of material at boundary of interaction: " + swContFeat.Stiffness);
                }
                if (swContFeat.SpecifyMaterial)
                {
                    Debug.Print("  Type of material as defined by swCosmosWorksMat:");
                    Debug.Print("    First object: " + swContFeat.get_MaterialID(0));
                    Debug.Print("    Second object: " + swContFeat.get_MaterialID(1));
                }
                if (swContFeat.FrictionOption == (int)swMotionContactFrictionType_e.swMotionContactFrictionFull)
                {
                    Debug.Print("  Static contact friction:");
                    Debug.Print("    Coefficient: " + swContFeat.StaticFrictionCoefficient);
                    Debug.Print("    Velocity: " + swContFeat.StaticFrictionVelocity);
                }
                else
                {
                    Debug.Print("  Dynamic contact friction:");
                    Debug.Print("    Coefficient: " + swContFeat.DynamicFrictionCoefficient);
                    Debug.Print("    Velocity: " + swContFeat.DynamicFrictionVelocity);
                }
 
            }
 
 
        }
 
 
 
        /// <summary>
        /// The SldWorks swApp variable is pre-assigned for you.
        /// </summary>
 
        public SldWorks swApp;
 
    }
}
 
 
 



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