基于有限元的铅芯橡胶支座力学性能模拟及应用

Mechanical Properties Simulation of Lead-rubber Bearing Based on FEA

铅芯橡胶支座基于自身良好的隔震力学性能、足够的竖向承载力以及稳定的弹性复位功能被广泛应用于工程结构中。对其力学性能模拟的正确与否将对整个结构的分析结果产生很大影响。文中基于大型通用有限元软件ANSYS,采用Combin40单元模拟铅芯橡胶支座的非线性滞回特性。最后通过对采用铅芯橡胶支座的某桁架结构进行动态特性分析,表明Combin40单元能很好模拟其力学性能。

Because of its excellent shockproof characteristics, sufficient vertical ultimate bearing capacity and stable elastic reset function, lead-rubber bearing is used widely in engineering structure. Correctness of mechanical performance simulation has much impact on analysis result of total structure. The nonlinear hysteretic characteristics of lead-rubber bearing is simulated based on ANSYS and combin40 element. The analysis result indicates that combin40 element can simulate mechanics characteristic well by dynamic analysis of girder construction.