可计算空间桁架受力及绘制形变图,内附说明 For example: Force in the member 2-4 = Force(6) = 0.8385e4 Displacement of node 4 in y direction = 0.0172 Reaction of node 8 in z zirection = - 0.4250e4 Note: If the structure is unstable, this warning is appeared: Warning: Matri