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A Review on Recent Contribution of Meshfree Methods to Structure and Fracture Mechanics Applications

机译:无网格法在结构和断裂力学应用中的最新进展

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摘要

Meshfree methods are viewed as next generation computational techniques. With evident limitations of conventional grid based methods, like FEM, in dealing with problems of fracture mechanics, large deformation, and simulation of manufacturing processes, meshfree methods have gained much attention by researchers. A number of meshfree methods have been proposed till now for analyzing complex problems in various fields of engineering. Present work attempts to review recent developments and some earlier applications of well-known meshfree methods like EFG and MLPG to various types of structure mechanics and fracture mechanics applications like bending, buckling, free vibration analysis, sensitivity analysis and topology optimization, single and mixed mode crack problems, fatigue crack growth, and dynamic crack analysis and some typical applications like vibration of cracked structures, thermoelastic crack problems, and failure transition in impact problems. Due to complex nature of meshfree shape functions and evaluation of integrals in domain, meshless methods are computationally expensive as compared to conventional mesh based methods. Some improved versions of original meshfree methods and other techniques suggested by researchers to improve computational efficiency of meshfree methods are also reviewed here.
机译:无网格方法被视为下一代计算技术。由于传统的基于网格的方法(例如FEM)在处理断裂力学,大变形和制造过程仿真方面存在明显的局限性,无网格方法已引起研究人员的广泛关注。迄今为止,已经提出了许多无网格方法来分析各个工程领域中的复杂问题。当前的工作试图回顾著名的无网格方法(如EFG和MLPG)在各种类型的结构力学和断裂力学应用(如弯曲,屈曲,自由振动分析,灵敏度分析和拓扑优化,单一和混合模式)中的最新发展和早期应用。裂纹问题,疲劳裂纹扩展和动态裂纹分析以及一些典型的应用,例如裂纹结构的振动,热弹性裂纹问题以及冲击问题中的失效过渡。由于无网格形状函数的复杂性质和域中的积分评估,与传统的基于网格的方法相比,无网格方法在计算上昂贵。本文还回顾了原始无网格方法的一些改进版本,以及研究人员为提高无网格方法的计算效率而提出的其他技术。

著录项

  • 期刊名称 other
  • 作者

    S. D. Daxini; J. M. Prajapati;

  • 作者单位
  • 年(卷),期 -1(2014),-1
  • 年度 -1
  • 页码 247172
  • 总页数 13
  • 原文格式 PDF
  • 正文语种
  • 中图分类
  • 关键词

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