功能梯度涂层滚压强化的有限元分析  

Finite Element Analysis on Functionally Graded Coating Rolling Strengthening

作　　者：孙长青[1] 张洪才[2] 刘劲涛[1] 张陈[1] 

机构地区：[1]沈阳工程学院机械工程系,辽宁沈阳110036 [2]长春装甲兵技术学院车辆工程系,吉林长春130117

出　　处：《机械设计与制造》2014年第6期217-219,共3页Machinery Design & Manufacture

基　　金：国家自然科学基金项目(51075398);辽宁省博士启动基金项目(20121063);沈阳工程学院博士启动项目(LGBS-1203)

摘　　要：在功能梯度涂层模型的基础上引入了刚性轧辊,建立了功能梯度涂层滚压强化的力学分析模型,并研究功能梯度涂层的非均匀材料参数、滚压速度对其涂层的等效应力和残余应力的影响,通过计算表明,非均匀材料参数对涂层前部和后部的等效应力有明显的影响,而对涂层中部基本没有影响;在整个涂层表面的残余应力是不相等的,最大等效残余应力为400MPa,最小等效残余应力为30MPa,两者相差近10倍,而滚压速度对于涂层的等效应力没有影响。这为滚压强化功能梯度涂层材料的设计提供了理论支持。A rigid roller was introduced into the functionally graded coating modeling, and the mechanical model of functionally graded coating rolling strengthening was established, and the effect of non-uniform parameter and rolling speed on equivalent stress and residual stress of functionally graded coating was studied. The calculation results showed that nonuniform parameter affected the equivalent stress of the front and rear part of coating greatly and did not affect the central part, that the residual stresses of the whole coating surface varied, the maximum equivalent residual stress was 400MPa, and the minimum value was 30MPa, and that rolling speed had no effect on equivalent stress of coating. It provided a theoretical support for the design of rolling strengthening functionally graded coating.

关 键 词：功能梯度 滚压 涂层 有限元分析 

分 类 号：TH16[机械工程—机械制造及自动化] TG335.86[金属学及工艺—金属压力加工]