300M钢喷丸强化残余应力场的数值模拟  

Numerical Simulation of 300M Steel Residual Stress Field Caused by Shot-peening

作　　者：卢国鑫[1] 宋颖刚[1] 王仁智[2] 王强[1] 王欣[1] 

机构地区：[1]北京航空材料研究院金属腐蚀与防护研究室,北京100095 [2]北京航空材料研究院金属物理研究室,北京100095

出　　处：《中国表面工程》2013年第4期72-76,共5页China Surface Engineering

摘　　要：利用有限元分析软件ABAQUS 6.12,建立了300M钢喷丸强化有限元模型,利用单弹丸多次冲击靶材的方式模拟喷丸过程中靶材表面发生的循环塑性变形。在控制相同动能输入的条件下,分别选取3种喷丸工艺,对不同喷丸工艺处理后的残余应力场进行有限元模拟并加以比较。结果表明:控制动能输入而改变弹丸尺寸与速度的3种工艺中,弹丸尺寸与速度分别为0.8mm与37m/s时,靶材获得"饱和"残余压应力场所需冲击次数最少,"饱和"残余应力场的分布也各不相同,残余压应力场强度是多个工艺参数的函数。The model of 300M steel shot-peening process is built using finite element analysis software ABAQUS 6.12. The cycle plastic deformation of the target material is simulated by the way of several attacks on targets with one shot. Three shot-peening processes with the same kinetic energy input are selected to compare the residual stress field after shotpeening.Simulation results show that among the three processes which kinetic energy input is constant but the shot size and velocity change, when the shot diameter and velocity are 0.8 mm and 37 m/s respectively, the impact times required to obtain a stable residual stress field is the least, the obtained stable residual stress field is different, and the intensity of compressive stress field changes with multiple process parameters.

关 键 词：有限元模拟 喷丸 冲击次数 残余压应力场 

分 类 号：TG668[金属学及工艺—金属切削加工及机床]