MODELING AND SIMULATION OF HIGH-SPEED MACHINING
MODELING AND SIMULATION OF HIGH-SPEED MACHINING
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DOI：
10.1002/nme.1620382108
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发表时间：
1995-11-15
影响因子：
2.9
通讯作者：
ORTIZ, M
中科院分区：
文献类型：
--
作者：
MARUSICH, TD;ORTIZ, M
建立了正交高速加工的拉格朗日有限元模型。连续网格划分和自适应网格划分是我们用来避免与变形引起的单元畸变相关的困难的主要工具，并用于解决解决方案中的精细尺度特征。该模型考虑了动态效应、热传导、网格对网格的摩擦接触和完全的热-机械耦合。此外，还实现了一种断裂模型，该模型允许在剪切局部化切屑状态下任意裂纹的起裂和扩展。该模型正确地显示了随着刀具速度的增加，所观察到的从连续到分段的转变。
A Lagrangian finite element model of orthogonal high-speed machining is developed. Continuous remeshing and adaptive meshing are the principal tools which we employ for sidestepping the difficulties associated with deformation-induced element distortion, and for resolving fine-scale features in the solution, The model accounts for dynamic effects, heat conduction, mesh-on-mesh contact with friction, and full thermomechanical coupling. In addition, a fracture model has been implemented which allows for arbitrary crack initiation and propagation in the regime of shear localized chips. The model correctly exhibits the observed transition from continuous to segmented chips with increasing tool speed.