基于模糊可靠度的机械零件设计

Based on the Fuzzy Reliability Design of Mechanical Parts

依据模糊数学原理将模糊可靠性问题转化为常规可靠性问题来计算机械零件的模糊可靠性。将模糊集合理论应用机械零件的可靠性设计中,对隶属函数的选择进行了分析。推导了模糊可靠度的计算模型。通过将非正态分布变量在设计点做当量正态变换来求解结构的安全指标和失效概率。通过算例对模型进行了验证。

The fuzzy mathematics principle will be rest on to blur the reliable question to transform for the con- ventional reliable question comes the computer machine parts the fuzzy reliability. The set theory application machine parts in the reliability design will be blur, has carried on the analysis to membership funetion＇s choice, has inferred the fuzzy reliability formula. The non normal distribution of variables in the design point of equivalent normal transformation is solved structure safety index and failure probability. The result is compared with interval analysis model.