西南交通大学学报
西南交通大學學報
서남교통대학학보
JOURNAL OF SOUTHWEST JIAOTONG UNIVERSITY
2014年
5期
837-841
,共5页
变刚度%弹簧组%模糊可靠性%优化设计
變剛度%彈簧組%模糊可靠性%優化設計
변강도%탄황조%모호가고성%우화설계
variable stiffness%spring assembly%fuzzy reliability%optimization design
为提高变刚度弹簧组的设计质量,在传统优化设计方法的基础上,应用模糊设计理论和可靠性设计理论,建立了当弹簧应力和强度分别为随机变量和模糊变量时,综合考虑静强度、疲劳强度、稳定性、质量等因素的变刚度弹簧组的模糊可靠性优化设计模型.以货车某新型变刚度弹簧组为研究对象,利用建立的模型对其进行了优化设计分析,计算结果显示,空重车静挠度分别比原设计方案提高了5.4和3.2 mm,同时还使其总质量降低了约15.8%,表明所建立的模糊可靠性优化设计模型能满足设计要求.
為提高變剛度彈簧組的設計質量,在傳統優化設計方法的基礎上,應用模糊設計理論和可靠性設計理論,建立瞭噹彈簧應力和彊度分彆為隨機變量和模糊變量時,綜閤攷慮靜彊度、疲勞彊度、穩定性、質量等因素的變剛度彈簧組的模糊可靠性優化設計模型.以貨車某新型變剛度彈簧組為研究對象,利用建立的模型對其進行瞭優化設計分析,計算結果顯示,空重車靜撓度分彆比原設計方案提高瞭5.4和3.2 mm,同時還使其總質量降低瞭約15.8%,錶明所建立的模糊可靠性優化設計模型能滿足設計要求.
위제고변강도탄황조적설계질량,재전통우화설계방법적기출상,응용모호설계이론화가고성설계이론,건립료당탄황응력화강도분별위수궤변량화모호변량시,종합고필정강도、피로강도、은정성、질량등인소적변강도탄황조적모호가고성우화설계모형.이화차모신형변강도탄황조위연구대상,이용건립적모형대기진행료우화설계분석,계산결과현시,공중차정뇨도분별비원설계방안제고료5.4화3.2 mm,동시환사기총질량강저료약15.8%,표명소건립적모호가고성우화설계모형능만족설계요구.
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.