线性荷载及均布荷载共同作用下外边界固支环板的极限荷载研究

LIMIT LOAD OF IMMOVABLE SUPPORTED ANNULAR PLATE UNDER COMBINED ACTION OF LINEAR LOAD AND UNIFORM LOAD

考虑到Mises屈服条件的非线性 ,应用加权余量法分析了外边界固支环板在线性荷载与均布荷载共同作用下的极限荷载。针对线性荷载的不同分布形式 ,给出了极限荷载的计算公式 ,得到了极限荷载的数值计算结果及影响曲线 ,并与最大弯矩极限条件下的数值结果进行了对比 。

The limit load of immovable supported annular plate under the combined action of linear load and uniform load was investigated by the use of Mises yield criteria. In consideration of nonlinearity of Mises yield criteria,the weighted residual method was adopted to analyze the limit load. The analytical formulae and numerical results for the limit load of annular plate under two distribution forms of linear load were given. The relation curves of limit loads with ratio of internal diameter to external diameter of annular plate were drawn out. The numerical results were compared with those obtained under the limit condition of maximum moment of force. It is found that the results obtained under Mises yield criteria are reasonable.