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The fast multipole boundary element methods (FMBEM) and its applications in rolling engineering analysis

机译:快速多极边界元方法(FMBEM)及其在轧制工程分析中的应用

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Fast multipole boundary element methods (FMBEMs) are developed based on the couple of fast multipole algorithm and generalized minimal residual algorithm. The FMBEMs improve the efficiency of conventional BEMs, accelerate the computing, enlarge the solving scale, and it is applied in various engineering fields. The paper tried to do a brief review for the FMBEMs, and focus on the description of basic principles and applications in rolling engineering. The basic principles and main frameworks of two typical methods of FMBEMs (sphere harmonic function multipole BEM and Taylor series multipole BEM) are briefly described, and then the key numerical iterative and preconditioning techniques suitable for the FMBEMs are introduced. The typical numerical examples are presented, including the elasticity problems, the elastic contact problems and the elastoplasticity problems, etc. The validity and effectiveness of FMBEMs are effectively illustrated by engineering analysis examples. The numerical results suggest that the FMBEMs are suitable for the analysis and solution of large scale rolling engineering problems. The implementation process of numerical analysis can provide useful reference for the applications in other engineering fields.
机译:基于快速多极点算法和广义最小残差算法的结合,开发了快速多极点边界元方法(FMBEM)。 FMBEM提高了传统BEM的效率,加快了计算速度,扩大了求解规模,并已应用于各种工程领域。本文试图对FMBEM进行简要回顾,并着重于描述滚动工程的基本原理和应用。简要介绍了两种典型的FMBEM方法(球谐函数多极BEM和泰勒级数多极BEM)的基本原理和主要框架,然后介绍了适用于FMBEM的关键数值迭代和预处理技术。给出了典型的数值例子,包括弹性问题,弹性接触问题和弹塑性问题等。通过工程分析实例有效地说明了FMBEM的有效性和有效性。数值结果表明,FMBEMs适用于大型轧制工程问题的分析和解决。数值分析的实现过程可以为其他工程领域的应用提供有益的参考。

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