Local and non-local thermomechanical modeling and finite-element simulation of high-speed cutting
Local and non-local thermomechanical modeling and finite-element simulation of high-speed cutting
复制标题
高速切削的局部和非局部热机械建模及有限元模拟
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
C. Hortig
中科院分区：
文献类型：
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作者：
C. Hortig
在本章中，我们讨论高速切削过程中剪切带和切屑形成的建模和仿真。在此过程中，热软化主导应变和应变率相关硬化的地方会形成剪切带。这种情况发生在机械耗散占主导地位的热传导区域。在数值方面，我们对数值解的基于尺寸和方向的网格依赖性进行了系统研究。简要讨论了这种对切削力模拟和其他技术方面的依赖性的后果。
In this chapter we discuss the modeling and simulation of shear banding and chip formation during high-speed cutting. During this process, shear bands develop where thermal softening dominates strainand strain-rate-dependent hardening. This occurs in regions where mechanical dissipation dominates heat conduction. On the numerical side, we carry out a systematic investigation of sizeand orientation-based mesh-dependence of the numerical solution. The consequences of this dependence for the simulation of cutting forces and other technological aspects are briefly discussed.