Introduction - If you have any usage issues, please Google them yourself
Plane, the calculation of space truss: 1, is included in the load displacement of the plane truss, as well as the axial force rod. Symbol provides axial force, tension is positive, compression negative. In addition, calculation of bearing reaction force to sing. 2, the node number of the truss, to take first for mobile nodes, and then for a fixed node. 3, calculating the number of working condition issues