应力-强度干涉模型下的滚动轴承可靠性评估与设计方法
Reliability Evaluation and Design Method of Rolling Bearings Under Stress-strength Interference Model
李燕科 1邱明 2李军星 1牛凯岑 1许艳雷1
作者信息
- 1. 河南科技大学机电工程学院,河南洛阳 471003
- 2. 河南科技大学机电工程学院,河南洛阳 471003;河南科技大学机械装备先进制造河南省协同创新中心,河南洛阳 471003
- 折叠
摘要
针对滚动轴承可靠性低、缺乏设计依据等问题,提出一种应力-强度干涉模型下的滚动轴承可靠性评估与设计方法.考虑滚动轴承实际承载当量动载荷和规定当量动载荷的随机特性,假设两者为服从对数正态分布的随机变量,建立滚动轴承可靠性评估与设计模型.其次,对多型号多工况下的深沟球轴承和角接触球轴承进行仿真验证,结果表明:本文提出的滚动轴承可靠性评估与设计方法,通过分析当量动载荷的许用范围,结合轴承设计公式可以使优化后的轴承满足在该工况下的目标可靠性寿命,准确有效的实现滚动轴承的可靠性评估与设计.
Abstract
Aiming at the low reliability and lack of design basis of rolling bearings,a reliability evaluation and design method of rolling bearings under stress-strength interference model was proposed.Considering the random characteristics of the actual equivalent dynamic load and the specified equivalent dynamic load,and assuming that the two random variables subject to lognormal distribution,the reliability evaluation and design model for rolling bearings was established.Secondly,the simulation verification is carried out for the deep groove ball bearings and angular contact ball bearings under multiple models and conditions.The results show that the reliability evaluation and design method of rolling bearing proposed in this paper can make the optimized bearing meet the target reliability life under this working condition by analyzing the allowable range of equivalent dynamic load and combining with the bearing design formula,and achieve the reliability evaluation and design of rolling bearing accurately and effectively.
关键词
滚动轴承/可靠性设计/应力-强度干涉模型/对数正态分布Key words
rolling bearing/reliability design/stress-strength interference model/lognormal distribution引用本文复制引用
基金项目
国家重点研发计划(2019YFB2004403)
国家自然科学基金(52005159)
河南省科技攻关计划(222102220061)
河南省高等学校青年骨干教师培养计划(2021GGJS048)
出版年
2024
国家科技期刊平台
NSTL
万方数据