private BiElasticMaterial2D(double youngModulus1, double equivalentYoungModulus1, double poissonRatio1,
double equivalentPoissonRatio1, double thickness1, double youngModulus2, double equivalentYoungModulus2,
double poissonRatio2, double equivalentPoissonRatio2, double thickness2,
MaterialInterface2D bimaterialInterface)
{
MaterialUtilities.CheckYoungModulus(youngModulus1);
MaterialUtilities.CheckPoissonRatio(poissonRatio1);
MaterialUtilities.CheckThickness(thickness1);
MaterialUtilities.CheckYoungModulus(youngModulus2);
MaterialUtilities.CheckPoissonRatio(poissonRatio2);
MaterialUtilities.CheckThickness(thickness2);
this.YoungModulus1 = youngModulus1;
EquivalentYoungModulus1 = equivalentYoungModulus1;
this.PoissonRatio1 = poissonRatio1;
this.EquivalentPoissonRatio1 = equivalentPoissonRatio1;
this.Thickness1 = thickness1;
this.YoungModulus2 = youngModulus2;
EquivalentYoungModulus2 = equivalentYoungModulus2;
this.PoissonRatio2 = poissonRatio2;
this.EquivalentPoissonRatio2 = equivalentPoissonRatio2;
this.Thickness2 = thickness2;
this.bimaterialInterface = bimaterialInterface;
}
/// <summary>
/// Material properties for the "positive" subdomain designed by the interface are denoted as 1.
/// Material properties for the "negative" subdomain designed by the interface are denoted as 2.
/// </summary>
/// <param name="youngModulus1"></param>
/// <param name="poissonRatio1"></param>
/// <param name="youngModulus2"></param>
/// <param name="poissonRatio2"></param>
/// <param name="bimaterialInterface"></param>
public static BiElasticMaterial2D CreateMaterialForPlainStress(double youngModulus1, double poissonRatio1,
double thickness1, double youngModulus2, double poissonRatio2, double thickness2,
MaterialInterface2D bimaterialInterface)
{
return(new BiElasticMaterial2D(youngModulus1, youngModulus1, poissonRatio1, poissonRatio1, thickness1,
youngModulus2, youngModulus2, poissonRatio2, poissonRatio2, thickness2, bimaterialInterface));
}
private static XContinuumElement2D CreateMaterialInterfaceElement()
{
XNode[] nodes = new XNode[]
{
new XNode(0, 20.0, 0.0),
new XNode(1, 40.0, 0.0),
new XNode(2, 40.0, 20.0),
new XNode(3, 20.0, 20.0),
};
var point1 = new CartesianPoint(30.0, 0.0);
var point2 = new CartesianPoint(30.0, 20.0);
PolyLine2D discontinuity = new PolyLine2D(point1, point2);
MaterialInterface2D enrichmentItem = new MaterialInterface2D(discontinuity);
double E1 = 2E6;
double E2 = 0.5 * E1;
double v = 0.3;
var material = BiElasticMaterial2D.CreateMaterialForPlainStrain(E1, v, E2, v, enrichmentItem);
var integrationStrategy = new RectangularSubgridIntegration2D <XContinuumElement2D>(
2, GaussLegendre2D.GetQuadratureWithOrder(2, 2));
//var integrationStrategy = new IntegrationForCrackPropagation2D(GaussLegendre2D.Order2x2,
// new RectangularSubgridIntegration2D<XContinuumElement2D>(2, GaussLegendre2D.Order2x2));
var factory = new XContinuumElement2DFactory(integrationStrategy, integrationStrategy, material);
var element = factory.CreateElement(0, CellType.Quad4, nodes);
//discontinuity.ElementIntersections.Add(element, new CartesianPoint2D[] { point1, point2 });
//OBSOLETE: Elements access their enrichments from nodes now.
//enrichmentItem.EnrichElement(element);
enrichmentItem.EnrichNode(nodes[0]);
enrichmentItem.EnrichNode(nodes[1]);
enrichmentItem.EnrichNode(nodes[2]);
enrichmentItem.EnrichNode(nodes[3]);
return(element);
}
/// <summary>
/// Material properties for the "positive" subdomain designed by the interface are denoted as 1.
/// Material properties for the "negative" subdomain designed by the interface are denoted as 2.
/// </summary>
/// <param name="youngModulus1"></param>
/// <param name="poissonRatio1"></param>
/// <param name="youngModulus2"></param>
/// <param name="poissonRatio2"></param>
/// <param name="bimaterialInterface"></param>
/// <returns></returns>
public static BiElasticMaterial2D CreateMaterialForPlainStrain(double youngModulus1, double poissonRatio1,
double youngModulus2, double poissonRatio2, MaterialInterface2D bimaterialInterface)
{
double equivalentE1 = youngModulus1 / (1.0 - poissonRatio1 * poissonRatio1);
double equivalentV1 = poissonRatio1 / (1.0 - poissonRatio1);
double thickness1 = 1.0;
double equivalentE2 = youngModulus2 / (1.0 - poissonRatio2 * poissonRatio2);
double equivalentV2 = poissonRatio2 / (1.0 - poissonRatio2);
double thickness2 = 1.0;
return(new BiElasticMaterial2D(youngModulus1, equivalentE1, poissonRatio1, equivalentV1, thickness1,
youngModulus2, equivalentE2, poissonRatio2, equivalentV2, thickness2, bimaterialInterface));
}
