public matrix decomposeElemGrad() { // int index = 0; elemGrad.Decompose(nodalForce); /* for (int i = 0; i < nNodes; i++) * { * for (int j = 0; j < __dim; j++) * { * nodalForce[i, j] = elemGrad[index]; * index++; * } * } */ return(this.nodalForce); }