机械零件的概率设计概要

• 作 者: 麦华健
• 机 构: 冶金部金属制品研究所,
• 出 处: 四川机械
• 发表日期: 1983年04期
• 关键词: 概率 机械零件 安全系数 随机变量 作定 可靠性 常规设计 可靠度 强度条件 应力分布

一、基本原理“概率设计”是可靠性概率设计的简称。在常规设计中,是把零件强度S和应力s看作定值,引入安全系数n,并以强度条件S≥n·s作为零件设计可靠性的保证。该法缺陷在干掩盖了工程设计变量是随机变量这一事实,故使设计者无法对所

First, the basic principle of “probability design” is the reliability of the short design. In the conventional design, the part strength S and stress s are regarded as setting values, the safety factor n is introduced, and the strength condition S≥n · s is used as the guarantee of the part design reliability. The flaws in the dry cover engineering design variables is a random variable that fact, so that designers can not be