摘要
计算压杯稳定性现有安全系数法和普通可靠性计算法。这两种计算法都忽略了变量的模糊性和判据空间这一客观实际，而仅以某一个元素作为判据，因此两者的计算结果很难与实际相符。为此，提出了压杆稳定性模糊可靠度计算的新方法，并作了实例计算。简要步骤是：先计算压杆稳定性普通可靠度R；按逐级估量法并参考专家意见确定分布参数k、a，得到压杆临界载荷的隶属函数；最后求得压杆模称可靠度R。
The methods for calculating the stability of compression poles include safety factor method and conventional reliability calculation method. These two methods ignore the fuzziness of variables and the criterion space, and takes a certain element as criterion, therefore the calculation results are different from the actual situation. n1ereby a new method for calculating fuzzy stable reliability of compression poles is offered, and an exainple of calculation is presented. The procedureis: calculating stable reliability first, determining distribution parameter and obtaining subordinate function of critical loadthen, and working out the fuzzy reliability of the compression pole finally.
出处
《石油机械》
EI
北大核心
1998年第8期7-9,56,共3页
China Petroleum Machinery
关键词
压杆
稳定性
模糊可靠度
计算
钻机
油田
compression pole stability fuzzy reliability calculation
