蠕变损伤的随机模糊分析

A Model for Random and Fuzzy Analysis of the Creep damage

在考虑材质劣化和空洞损伤的蠕变损伤模型基础上 ,建立蠕变损伤的失效概率模型。通过进一步对蠕变损伤模糊性的讨论 ,提出了蠕变损伤的模糊失效概率模型。算例表明 ,考虑模糊因素是必要的。最后讨论了随机变量的分布情况 。

Based on a model considering simultaneously material and uoid type creep damage, a failure probabilistic model for the cree damage is establisheed, After studying the fuzziness of the creep damage for Ni based single crystal superalloys a fuzzy failure probabilistic model is presented. In addition the illustrative catculation shows it is necessary to take the fuzziness of the creep damage in to account when establishing the model. Finally the distributions for random variables in the model are discussed and some result are pointed out.