Finite element simulation of chip formation in peripheral milling mild carbon steel
Finite element simulation of chip formation in peripheral milling mild carbon steel
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发表时间：
2005
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通讯作者：
邓文君;夏伟;李元元;邵明;张卫文
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作者：
邓文君;夏伟;李元元;邵明;张卫文
采用二维热力耦合模型，模拟了连续切屑形成条件下低碳钢铣削过程。工件的变形被视为具有各向同性应变硬化的弹塑性变形。温度依赖性材料的性能进行了分析。切屑分离是通过商用有限元程序Marc中的自适应网格重划分策略模块来实现的，为了提高计算效率和精度，我们在Marc程序中实现了一个自定义的子程序来定义刀尖处的局部细化。测量的芯片的形状，温度，应力，应变和应变率场。模拟得到的切削力值与切削试验结果吻合较好。
A two-dimensional coupled thermo-mechanical model is used to simulate the progress of milling mild carbon steel with continuous chip formation. Deformation of the workpiece is treated as elastic-plastic with isotropic strain-hardening. An analysis of the properties of temperature-dependent materials is employed. The chip separation is achieved by the adaptive remeshing strategy module found in commercial finite element code Marc.In order to increase the computational efficiency and accuracy, we implement a customized subroutine into the Marc code to define local refinement at the tool tip. Measurements are taken of the shape of the chip, the temperature, stress, strain and strain-rate fields. The values of the cutting forces obtained from the simulatious agree well with those obtained from the cutting experiments.