private static void TestMultinodeBar1() { var n = 2; var bar = new BarElement(n); var hlp = new EulerBernoulliBeamHelper(BeamDirection.Y); for (var i = 0; i < n; i++) { bar.Nodes[i] = new Node(i * 3, 0, 0); } var testXi = -0.66; var n1 = hlp.GetNMatrixBar2Node(bar, testXi); var n2 = hlp.GetNMatrixAt(bar, testXi); var b = hlp.GetBMatrixAt(bar, testXi); var d = n1 - n2; }