面向多磨料磨削模型的物质点法

S. Leroch, P. Grützmacher, H. Heckes, S. Eder
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引用次数: 1

摘要

一个有效的优化表面处理过程可以节省大量的能源和资源。由于发生的大变形,磨削过程非常难以使用标准(基于网格的)微尺度建模技术进行建模。本文采用无网格物质点法研究了磨料形状、方位、前倾角和进给深度对磨削效果的影响。我们讨论了切屑形态、表面形貌、切削与犁耕模式、材料去除率和切屑温度。将我们的模型从简单的单磨料方法推广到具有伪周期边界条件的多磨料模拟,大大提高了真实感,并为与实际精加工过程的比较奠定了基础。最后,我们将多个磨料的结果与缩小分子动力学系统的结果进行了比较,并讨论了相似性和差异性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Towards a multi-abrasive grinding model for the material point method
An efficient optimization of surface finishing processes can save high amounts of energy and resources. Because of the large occurring deformations, grinding processes are notoriously difficult to model using standard (mesh-based) micro-scale modeling techniques. In this work, we use the meshless material point method to study the influence of abrasive shape, orientation, rake angle, and infeed depth on the grinding result. We discuss the chip morphology, the surface topography, cutting versus plowing mode, the material removal rate, and the chip temperature. A generalization of our model from a straightforward single-abrasive approach to a multiple-abrasive simulation with pseudo-periodical boundary conditions greatly increases the degree of realism and lays the foundation for comparison with real finishing processes. We finally compare our results for multiple abrasives to those obtained for a scaled-down molecular dynamics system and discuss similarities and differences.
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