Elasto-plastic analysis on single layer reticulated domes with socket-joint system

Abstract:

A socket-joint system with partial bend-bearing capacity is a typical semi-rigid joint system.The numerical model of the joint was established with solid element and contact element using finite element software ANSYS.The mechanical characters of socket joint system were studied in detail and the bending stiffness curves of socket joints were established.Then,Using nonlinear beam element with spring elements in its each end,Kiewitt8 (K8) single-layer reticulated domes with socket joints were analyzed through ANSYS considering several different parameters including bending stiffness,ratio of rise to span,and division number.The influences of the parameters on the critical load of the domes were obtained.