Zhang Zhao
Professor Supervisor of Doctorate Candidates Supervisor of Master's Candidates
Academic Titles:Professor in Process Mechanics
Gender:Male
Alma Mater:Dalian University of Technology
Degree:Doctoral Degree
School/Department:Department of Engineering Mechanics, Dalian University of Technology
Discipline:mechanics of manufacturing process. Engineering Mechanics. Computational Mechanics
Business Address:Room 619,Integrated Laboratory building (1#)
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Date:2019-10-15
Indexed by:Conference Paper
Date of Publication:2014-08-10
Page Number:1-10
Key Words:核电站;管道设备;疲劳寿命;应力强度因子;蒙特卡洛模拟法;概率断裂力学
Abstract:采用奇异单元模拟裂纹尖端应力场的奇异性,计算裂纹尖端的应力强度因子和张开应力.以概率论为基础,结合确定性疲劳断裂力学估算方法,考虑参数的不确定性和随机性,应用蒙特卡洛模拟法对管道的疲劳寿命进行分析.结果表明,通过J 积分计算得到的裂纹尖端张开应力与计算得到的管道工作应力基本相等.采用蒙特卡洛模拟法进行的一定可靠度和置信度下的疲劳寿命预测反映了评定参数的不确定性,较传统的断裂力学计算结果更安全.
