截顶圆锥壳屈曲载荷的灰色预测

Predicting of Buckling Load of Truncated Conical Shell By Grey System Theory

将灰关联分析方法引入极值性失稳破坏的研究,建立了根据实测压力～应变数据预测结构破坏载荷的新方法,采用该方法预测了承受外压的环肋截顶圆锥壳的破坏载荷,并通过破坏性试验和有限元分析结果,验证了本方法的实用性与有效性.

Application of grey system theory in researching of second kind of stability has been examined. A new engineering predicting algorithm for structural buckling load based upon the measured data of load P and strain e is established. The load - carrying capacity of a ring - stiffened conical shell is tested and predicted by the obtiained algorithm and finite element analysis. It is shown that the predicting algorithm proposed in this paper is effective in the determination of residual strength of active -in service structures.