摘要
概率设计要研究强度分布、应力分布以及联结这两者关系的概率计算方法三个问题。本文提出,在已知起重量分布的条件下,通过建立弹性动力学模型、进行计算机仿真,可获得主要受力件危险截面的应力时间历程,从而得到应力分布类型和分布参数。本文还提出,应用设计验算点法,通过计算机迭代运算,可得到满足给定可靠度的截面尺寸。
There are three problems to be solved in probabilistie design, i. e. strength distribution, stress distribution and probability calculation method to consider their correlativity. Present paper shows, if the distribution of lifted load is known, then the stress-time history of critical cross section of main load bearing elements can be obtained by establishing elasto-dynamie model followed by computer simulation. As a result, the type and parameters of stress distribution can be determined. It is also concluded in the paper that the section dimension which can satisfy the requirement of a given reliability can be determined by method of design verification points with computer iterative calculation.
出处
《起重运输机械》
1992年第9期3-8,共6页
Hoisting and Conveying Machinery
