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首页> 外文期刊>International Journal of Material Forming >A parallel two mesh method for speeding-up processes with localized deformations: application to cogging
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A parallel two mesh method for speeding-up processes with localized deformations: application to cogging

机译：并行的两网格方法，用于加速具有局部变形的过程：在齿槽加工中的应用

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摘要

In order to reduce the very long computational time required for the simulation of incremental processes such as cogging or ring rolling, a Bimesh method is proposed. It consists in using different finite element meshes for the resolution of the different physical problems: a main fine mesh to store the results and to carry out the thermal computations, and an intermediate coarser mesh for the mechanical calculations. It makes it possible to take advantage of the localised deformations that characterize incremental processes to coarsen the mechanical mesh and consequently reduce the computational time. After presenting the main components of these Bimesh method, the building of the embedded meshes and the data transfer between the meshes, its extension for parallel calculations are discussed, before analysing the obtained speed-ups for several cogging applications, both in sequential and in parallel.
机译：为了减少模拟齿槽轧制或环锭轧制等增量过程所需的非常长的计算时间，提出了一种Bimesh方法。它包括使用不同的有限元网格来解决不同的物理问题：主要的精细网格用于存储结果并进行热计算，而中间的粗网格用于机械计算。它可以利用表征增量过程的局部变形来粗化机械网格并因此减少计算时间。在介绍了这些Bimesh方法的主要组成部分，嵌入式网格的构建以及网格之间的数据传输之后，讨论了其在并行计算中的扩展，然后分析了在顺序和并行两种齿槽加工应用中获得的加速效果。

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