苏茂蔚,刘世英,刘延栋.陶瓷纤维铝基复合材料对活塞销座的影响[J].内燃机工程,2017,38(6):92-97.
陶瓷纤维铝基复合材料对活塞销座的影响
Effect of Ceramic Fiber Reinforced Al Alloy Matrix Composite on Piston Pin Bore
DOI：
关键词:正交试验  陶瓷纤维  复合材料  活塞销座  耦合应力
Key Words:orthogonal test  ceramic fiber  composite material  piston pin bore  coupling stress
基金项目:山东省自然科学基金项目（ZR2010EM070）
作者单位
苏茂蔚,刘世英,刘延栋 山东理工大学 交通与车辆工程学院,淄博 255049 
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摘要:为了避免铜衬套脱落并降低活塞销孔表面的最大应力,运用正交试验表L9（34）设计9组试验,另加1组镶铜衬套的试验作为对比方案,通过ANSYS对活塞进行了模拟分析,并利用极差分析法找到满足活塞热负荷及机械负荷的最优方案。结果表明：影响活塞销座热机耦合应力的3个因素大小依次为销孔型线方程、销座与活塞销的间隙和增强体的厚度；最优方案使活塞销孔表面上的耦合应力降低了28.8%；增强体使活塞销座处温度升高了3%~4%,活塞的耦合变形也减小了2.9%~3.8%。
Abstract:In order to avoid copper bushing shedding and reduce the maximum stress on the surface of a piston pin bore, nine groups of experiments and a comparison scheme of inserted copper bushing were designed by using orthogonal experiment method L9(34). A piston was simulated by using the ANSYS, and an optimal solution to the thermal and mechanical loads of the piston was obtained by using the range analysis. The results show that the three factors which affect the thermo mechanical stress of the piston pin bore are ranked according to their importance: the pin bore profile equation coming first, the clearance between the pin bore and the piston pin next, and the thickness of the reinforcing material last. The optimal solution makes the coupled stress on the piston pin bore surface reduce up to 28.8%, the piston bore temperature increase by 3% to 4%, and the piston coupled deformation decrease by 2.9% to 3.8%.
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