public override double[,] CreateLocalStiffnessMatrix()
{
double length = VectorOperations.CalculateVectorLengthFromEndPoints(nodesX [0], nodesX [1], nodesY [0], nodesY [1]); localStiffnessMatrix = new[, ]
{
{ E *A / length, 0, 0, -E *A / length, 0, 0 },
{ 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0 },
{ -E * A / length, 0, 0, E *A / length, 0, 0 },
{ 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0 }
};
return(localStiffnessMatrix);
}
public override double[,] CreateLocalStiffnessMatrix()
{
double length = VectorOperations.CalculateVectorLengthFromEndPoints(nodesX [0], nodesX [1], nodesY [0], nodesY [1]);
localStiffnessMatrix = new[, ]
{
{ E *A / length, 0, 0, -E *A / length, 0, 0 },
{ 0, 12 * E * I / Math.Pow(length, 3), 6 * E * I / Math.Pow(length, 2), 0, -12 * E * I / Math.Pow(length, 3), 6 * E * I / Math.Pow(length, 2) },
{ 0, 6 * E * I / Math.Pow(length, 2), 4 * E * I / length, 0, -6 * E * I / Math.Pow(length, 2), 2 * E * I / length },
{ -E * A / length, 0, 0, E *A / length, 0, 0 },
{ 0, -12 * E * I / Math.Pow(length, 3), -6 * E * I / Math.Pow(length, 2), 0, 12 * E * I / Math.Pow(length, 3), -6 * E * I / Math.Pow(length, 2) },
{ 0, 6 * E * I / Math.Pow(length, 2), 2 * E * I / length, 0, -6 * E * I / Math.Pow(length, 2), 4 * E * I / length }
};
return(localStiffnessMatrix);
}