西南交通大学学报Issue(5)：837-841,5.DOI:10.3969/j.issn.0258-2724.2014.05.015
基于模糊理论的车辆变刚度弹簧组可靠性优化设计
Reliability Optimization Design of Vehicle Variable Stiffness Spring Assembly by Fuzzy Theory
摘要
Abstract
In order to improve the design quality of spring assembly,a fuzzy reliability optimization design model of variable stiffness spring assembly was established using the fuzzy and the reliability design theory based on traditional optimization design method. In this model,the spring stress and strength were used as a random variable and a fuzzy variable,respectively;and the static strength, fatigue strength,stability,and quality factors were synthetically considered. In addition,taking a new type of variable stiffness spring assembly of a freight car as the object,an optimization analysis was carried out by used of the proposed model. The calculation results show that compared with the original design program,the model increases the static deflection of vehicle in empty and heavy load 5. 4 and 3. 2 mm,respectively;and in the mean time decreases the total quality of the spring assembly by about 15. 8%. Therefore,the fuzzy reliability optimization design model can meet the design requirements.关键词
变刚度/弹簧组/模糊可靠性/优化设计Key words
variable stiffness/spring assembly/fuzzy reliability/optimization design分类
交通工程引用本文复制引用
王红,汤劲松,刘万选..基于模糊理论的车辆变刚度弹簧组可靠性优化设计[J].西南交通大学学报,2014,(5):837-841,5.基金项目
国家自然科学基金资助项目 （）
