摘要
为研究A形井架的动态特性，对A形井架的自振频率与振型进行了分析．采用随机有限元方法，计算出单元多个结构参数随机摄动时的一、二阶灵敏度，并给出了A形井架随机特征值的具体表达式。
In this paper, firstly, the natural frequencies and modes of A' form derrick are analysed. Then,using the random perturbation finite element method,the one-order and two -order sensitivities of the derrickare calculated when the servel structural parameters of the elements are changed randomly. Finally, the randomstructural eigenvalues' concrete expressive formula of the derrick are given out.
出处
《工业建筑》
CSCD
北大核心
1997年第9期23-26,共4页
Industrial Construction
关键词
井架
动态特性
石油工业
钻井建筑物
‘A' form derrick dynamic characteristics random perturbation sensitivity
