高应变率下材料本构模型建模及其在插齿切削力预测中的应用  

Material constitutive modeling of high strain rate and its application in gear shaping cutting force prediction

作　　者：周后火 张连洪[1] 陈立海[1] 满佳[2] 刘欢[1] 

机构地区：[1]天津大学装备设计与制造技术天津市重点实验室,天津300072 [2]天津职业技术师范大学机械工程学院,天津300222

出　　处：《机械设计》2016年第8期8-14,共7页Journal of Machine Design

基　　金：国家自然科学基金资助项目(51275347);天津市应用基础与前沿技术研究计划重点资助项目(13JCZDJC35000);"高档数控机床与基础制造装备"科技重大专项资助项目(2010ZX04001-191;2010ZX04002-032)

摘　　要：插齿是加工齿轮的重要工艺方法,插削力是制定插齿加工工艺的重要依据。为获得插齿过程中的工件材料属性,采用霍普金森压杆试验,获得工件材料高应变(10~2~10~4s^(-1))下的Johnson-Cook(J-C)本构模型。基于工件材料本构模型,通过有限元模拟插齿过程,获得插齿切削力。采用刨削模拟插齿切削,对插齿切削力进行了实测试验。通过对比分析插齿切削力、模拟与试验结果,验证了本构模型和有限元模型及模拟结果的正确性,进而通过有限元数值模拟分析了刀具几何参数和切削参数对切削力的影响规律。文中建立的材料本构模型和插齿切削有限元模型可较准确地预测插齿切削力。Gear shaping is an important process in gear manufacturing. The cutting force is an important reference of processing technology of gear shaping. The Hopkinson pressure bar test was performed to obtain the material properties in the process of gear shaping. The Johnson-Cook （J-C） material constitutive model was obtained in high strain ratio （102-104 s-l）. The gear shaping process was simulated using finite element analysis to obtain the gear shaping cutting force based on the material constitutive model. The gear shaping cutting was simulated by planning to perform gear shaping cutting force test. The feasibility of constitutive model, finite element model and simulation results were verified according to the analysis of gear shaping cutting force, simulation and test results. The effect of cutter geometric parameters and cutting parameters on cutting force of gear shaping were analyzed through the finite element numerical simulation. The material constitutive model and the finite element model of gear shaping established in this paper can be used to predict the real cutting force of gear shaping accurately.

关 键 词：插齿切削力 J-C本构模型 有限元模拟 模拟试验 

分 类 号：TG501.3[金属学及工艺—金属切削加工及机床]