基于热力耦合模型的金属切削过程有限元分析

基于有限元理论和热力耦合模型的研究，通过讨论切削过程中的关键技术，主要包括切削加工有限元方程的建立：构件材料的Johnson-Cook本构模型；切屑分离准则；材料断裂准则；接触摩擦模型；切削热的产生和分布；残余应力的分析和切削力的比较分析等，建立了二位金属切削过程模型，通过采用粘结．滑移摩擦模型，有效地模拟了航空钛合金的切削加工过程，对此类材料加工的切削力、切屑温度以及应力场和应变的分布进行了分析。

Finite element analysis of metal orthogonal cutting process based on coupled thermo-mechanical model

Based on metal cutting theories and fully coupled temperature-displacement analysis,explicit,an orthogonal cutting model was established.The important technology of cutting modeling was summarized,including the establishment of finite element equations,flow stress models of work-piece materials,methods to building up element grids,chip separation criteria,material fracture criteria,the contact friction model,the generation of heat and the distributions of the temperature,the distribution residual stresses,a...