均布荷载作用下V形折板的稳定性计算

The stability calculation of V shaped folded plate under uniform loading

将均布荷载作用下的V形折板简化为均质弹性等截面简支梁,推导了整体稳定临界弯矩的理论公式.采用有限元法对理论计算结果进行了验证,理论计算与数值计算结果相对误差均在±3%以内,表明了理论公式的正确性.同时,分析了跨度较大且板宽较大板的误差相对于较小跨度较小板宽板误差大的原因.

In this paper V shaped folded plate is simplified as the simply supported beam having uniform section with homogeneous for analysis. The critical moment of V shaped folded plate overall stability under uniform loading have been presented. And the same V shaped folded plate have been analyzed with the help of finite element method for the overall buckling analysis. The relative error between theoretical calculation and numerical simulation calculation are all within ±3%, and the validity of theoretical formula is confirmed by calculated results. At the same time, the reason was analyzed why error of the V shaped folded plates with larger panels and wider span is greater than those with small spans and small panels.