> Get Normal Contact/Friction Force (C#)

Get Normal Contact/Friction Force (C#)

This example shows how to get the normal contact/friction x, y, z, and resultant force for the selected entities.

//--------------------------------------------
//
// Preconditions:
// 1. Add the SolidWorks Simulation as an add-in
//    (in SolidWorks, click Tools > Add-ins > SolidWorks Simulation).
// 2. Add the SolidWorks Simulation primary interop assembly as
//    a reference (in the IDE's Project Explorer, right-click
//    the project name, select Add Reference, click the Browse tab,
//    navigate to the <SolidWorks_install_dir>\api\redist folder and
//    select SolidWorks.Interop.cosworks.dll).
// 3. Open <SolidWorks_install_dir>\Simulation\Examples\Contact\slider_locker_mechanism.sldasm.
// 4. Open the Immediate window.
// 5. Select the Ready Simulation study tab.
// 6. Right-click Ready in the Simulation study tree and
//    select Run. The study may take several minutes to solve.
//    Click Yes if the message box informing you
//    of excessive displacements is displayed.
// 7. Run the macro.
//
//
// Postconditions: The x, y, z, and resultant
//    force are printed to the Immediate window.
//
//
// NOTE: Because this assembly document is used by
// SolidWorks Simulation tutorial, do not save any
// changes when closing the document.
//
//-------------------------------
using SolidWorks.Interop.sldworks;
using SolidWorks.Interop.swconst;
using SolidWorks.Interop.cosworks;
using System;
using System.Diagnostics;
using System.Collections;

namespace GetContactForcesAndFrictionCWResultsCSharp.csproj
{

    partial class SolidWorksMacro
    {

        public void Main()
        {

            ModelDoc2 swModel;
            ModelDocExtension swModelDocExt;
            CwAddincallback COSMOSObject;
            CosmosWorks COSMOSWORKS;
            CWModelDoc ActDoc;
            CWStudyManager StudyMngr;
            CWStudy Study;
            CWResults Results;
            int errors;
            byte[] sel1 = null;
            byte[] sel2 = null;
            object selObject1 = null;
            object selObject2 = null;
            int state;
            object[] Forces;
            int i;
            ArrayList PIDCollection = new ArrayList();

            // Initialize PIDs
            PIDCollection = PIDInitializer();

            // Connect to SolidWorks
            swModel = (ModelDoc2)swApp.ActiveDoc;
            swModelDocExt = (ModelDocExtension)swModel.Extension;

            // Get the SolidWorks Simulation object
            COSMOSObject = (CwAddincallback)swApp.GetAddInObject("CosmosWorks.CosmosWorks");
            if (COSMOSObject == null) ErrorMsg(swApp, "COSMOSObject object not found.", true);
            COSMOSWORKS = (CosmosWorks)COSMOSObject.CosmosWorks;
            if (COSMOSWORKS == null) ErrorMsg(swApp, "COSMOSWORKS object not found.", true);

            // Get the active document
            ActDoc = (CWModelDoc)COSMOSWORKS.ActiveDoc;
            if (ActDoc == null) ErrorMsg(swApp, "No active document.", true);

            // Get the Ready study
            StudyMngr = (CWStudyManager)ActDoc.StudyManager;
            if (StudyMngr == null) ErrorMsg(swApp, "StudyMngr object not there.", true);
            StudyMngr.ActiveStudy = 0;
            Study = (CWStudy)StudyMngr.GetStudy(0);
            if (Study == null) ErrorMsg(swApp, "Study not created.", true);

            // Get the results
            Debug.Print("Active study: " + Study.Name);
            Results = (CWResults)Study.Results;
            if (Results == null) ErrorMsg(swApp, "No Results object.", true);

            // Get PIDs for selection
            SelectByPID("selection1", PIDCollection, ref sel1);
            SelectByPID("selection2", PIDCollection, ref sel2);
            selObject1 = (object)swModelDocExt.GetObjectByPersistReference3((sel1), out state);
            selObject2 = (object)swModelDocExt.GetObjectByPersistReference3((sel2), out state);
            object[] arraySelections = { selObject1, selObject2 };

            // Get the normal contact/friction force for the selected entities
            Forces = (object[])Results.GetContactForcesAndFriction(0, null, (arraySelections), 0, (int)swsUnit_e.swsUnitSI, out errors);
            Debug.Print("  x, y, z, and Resultant:");
            for (i = 0; i <= Forces.GetUpperBound(0); i++)
            {
                Debug.Print("    " + Forces[i]);
            }

        }

        // Error function
        private void ErrorMsg(object SwApp, string Message, bool EndTest)
        {
            swApp.SendMsgToUser2(Message, 0, 0);
            swApp.RecordLine("'*** WARNING - General");
            swApp.RecordLine("'*** " + Message);
            swApp.RecordLine("");
            if (EndTest)
            {
            }
        }

        public ArrayList PIDInitializer()
        {
            // Initialize PIDs
            ArrayList PIDCollection = new ArrayList();
            string selection1;
            string selection2;

            // Get the PIDs of the faces to select
            selection1 = "48,17,0,0,3,0,0,0,255,254,255,32,76,0,111,0,99,0,107,0,101,0,114,0,45,0,49,0,64,0,115,0,108,0,105,0,100,0,101,0,114,0,95,0,108,0,111,0,99,0,107,0,101,0,114,0,95,0,109,0,101,0,99,0,104,0,97,0,110,0,105,0,115,0,109,0,4,0,0,0,16,0,0,0,1,0,0,0,1,0,0,0,11,0,0,0,255,255,1,0,11,0,109,111,70,97,99,101,82,101,102,95,99,1,0,0,0,0,0,0,0,6,0,0,0,0,3,0,0,0,0,0,0,125,195,148,37,173,73,178,84,125,195,148,37,173,73,178,84,0,0,255,255,1,0,23,0,109,111,70,114,111,109,83,107,116,69,110,116,83,117,114,102,73,100,82,101,112,95,99,0,0,255,255,1,0,6,0,109,111,70,82,95,99,255,255,1,0,13,0,109,111,69,120,116,79,98,106,101,99,116,95,99,255,255,1,0,17,0,109,111,67,83,116,114,105,110,103,72,97,110,100,108,101,95,99,255,254,255,57,67,0,58,0,92,0,67,0,79,0,83,0,77,0,79,0,83,0,68,0,111,0,99,0,115,0,92,0,69,0,120,0,97,0,109,0,112,0,108,0,101,0,115,0,95,0,102,0,111,0,114,0,67,0,117,0,115,0,116,0,111,0,109,0,101,0,114,0,115,0,92,0,67,0,111,0,110,0,116,0,97,0,99,0,116,0,92,0,76,0,111,0,99,0,107,0,101,0,11";
            selection1 = selection1 + "4,0,46,0,83,0,76,0,68,0,80,0,82,0,84,0,9,128,255,254,255,6,76,0,111,0,99,0,107,0,101,0,114,0,2,0,0,9,255,26,58,0,166,20,28,65,1,0,0,0,0,0,0,0,3,0,0,0,255,254,255,7,68,0,101,0,102,0,97,0,117,0,108,0,116,0,0,0,0,0,0,0,0,0,166,20,28,65,33,0,0,0,63,0,27,58,12,0,0,0,255,255,1,0,20,0,109,111,69,110,100,70,97,99,101,83,117,114,102,73,100,82,101,112,95,99,0,0,5,128,8,0,33,0,0,0,63,0,27,58,0,0,0,0,255,255,255,255,3,128,0,0,5,128,8,0,33,0,0,0,63,0,27,58,19,0,0,0,12,128,0,0,5,128,8,0,33,0,0,0,63,0,27,58,1,0,0,0,255,255,255,255,3,128,0,0,5,128,8,0,33,0,0,0,63,0,27,58,13,0,0,0,0,0,0,0,0,0,0,0,0,0";
            selection2 = "48,17,0,0,3,0,0,0,255,254,255,32,83,0,108,0,105,0,100,0,101,0,114,0,45,0,49,0,64,0,115,0,108,0,105,0,100,0,101,0,114,0,95,0,108,0,111,0,99,0,107,0,101,0,114,0,95,0,109,0,101,0,99,0,104,0,97,0,110,0,105,0,115,0,109,0,4,0,0,0,16,0,0,0,1,0,0,0,1,0,0,0,16,0,0,0,255,255,1,0,11,0,109,111,70,97,99,101,82,101,102,95,99,1,0,0,0,0,0,0,0,6,0,0,0,0,3,0,0,0,0,0,0,125,195,148,37,173,73,178,84,125,195,148,37,173,73,178,84,0,0,255,255,1,0,23,0,109,111,70,114,111,109,83,107,116,69,110,116,83,117,114,102,73,100,82,101,112,95,99,0,0,255,255,1,0,6,0,109,111,70,82,95,99,255,255,1,0,13,0,109,111,69,120,116,79,98,106,101,99,116,95,99,255,255,1,0,17,0,109,111,67,83,116,114,105,110,103,72,97,110,100,108,101,95,99,255,254,255,57,67,0,58,0,92,0,67,0,79,0,83,0,77,0,79,0,83,0,68,0,111,0,99,0,115,0,92,0,69,0,120,0,97,0,109,0,112,0,108,0,101,0,115,0,95,0,102,0,111,0,114,0,67,0,117,0,115,0,116,0,111,0,109,0,101,0,114,0,115,0,92,0,67,0,111,0,110,0,116,0,97,0,99,0,116,0,92,0,83,0,108,0,105,0,100,0,101,0,";
            selection2 = selection2 + "114,0,46,0,83,0,76,0,68,0,80,0,82,0,84,0,9,128,255,254,255,6,83,0,108,0,105,0,100,0,101,0,114,0,2,0,0,90,0,27,58,0,9,21,28,65,1,0,0,0,0,0,0,0,2,0,0,0,255,254,255,7,68,0,101,0,102,0,97,0,117,0,108,0,116,0,0,0,0,0,0,0,0,0,9,21,28,65,16,0,0,0,131,0,27,58,2,0,0,0,255,255,1,0,20,0,109,111,69,110,100,70,97,99,101,83,117,114,102,73,100,82,101,112,95,99,0,0,5,128,8,0,16,0,0,0,131,0,27,58,0,0,0,0,255,255,255,255,3,128,0,0,5,128,8,0,16,0,0,0,131,0,27,58,9,0,0,0,12,128,0,0,5,128,8,0,16,0,0,0,131,0,27,58,1,0,0,0,255,255,255,255,3,128,0,0,5,128,8,0,16,0,0,0,131,0,27,58,3,0,0,0,0,0,0,0,0,0,0,0,0,0";
            // Store constant in a collection
            PIDCollection.Add(selection1);
            PIDCollection.Add(selection2);

            // Pass this back
            return PIDCollection;

        }

        private void SelectByPID(string PIDName, ArrayList PIDCollection, ref byte[] varEntity)
        {

            // Select by PID
            byte[] PID = null;
            string[] PIDVariant = null;
            string PIDString = null;
            int i = 0;

            // Get string from array
            PIDString = "";
            switch (PIDName)
            {
                case "selection1":
                    PIDString = (string)PIDCollection[0];
                    break;
                case "selection2":
                    PIDString = (string)PIDCollection[1];
                    break;
                default:
                    break;
            }

            // Parse the string into an array
            PIDVariant = PIDString.Split(new char[] { ',' });

            // Convert string array to byte array

            int sizeArray = PIDVariant.Length;
            PID = new byte[sizeArray];
            for (i = 0; i < PIDVariant.Length - 1; i++)
            {

                PID[i] = Convert.ToByte(PIDVariant[i]);
            }
            varEntity = PID;
        }

        /// <summary>
        /// The SldWorks swApp variable is pre-assigned for you.
        /// </summary>
        public SldWorks swApp;

    }
}

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