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Discretization of crack propagation on parallel computing: complexity and parallel algorithms with source code

机译:并行计算中裂纹扩展的离散化:复杂性和带有源代码的并行算法

摘要

Deformation due to stress and strain that lead to an initiation of crack and then propagates is usually being modelled satisfactory by using finite element method (FEM). The mathematical model was developed by using the relationship between the forces applied to the individual elements and the nodal displacements. The element stiffness matrix which had been set up earlier can be used to describe the elastic deformation since the numerical FEM is emphasized as a platform for discretization of one-dimensional continua problems where the stress is uniaxial and implemented on parallel algorithm using the distributed parallel computer system. Parallel algorithm is used by Parallel Virtual Machine (PVM) software tool to capture the visualization of the overall extension and the stress distribution in a linearly tapered bar of circular section with an end load. The results obtained from the finite element approximation are presented graphically. In this book, the performance measurements of algorithm are presented in terms of speedup, efficiency, effectiveness and temporal performance.
机译:通常,通过使用有限元方法(FEM)可以令人满意地模拟由于应力和应变导致的裂纹变形,然后导致裂纹扩展。数学模型是通过使用施加到各个元素的力与节点位移之间的关系而开发的。早先建立的单元刚度矩阵可用于描述弹性变形,因为数值有限元法被强调为离散一维连续问题的平台,其中应力是单轴的,并使用分布式并行计算机在并行算法上实现系统。并行虚拟机(PVM)软件工具使用并行算法捕获具有端载荷的圆形截面的线性锥形杆中的整体延伸和应力分布的可视化。从有限元逼近获得的结果以图形方式呈现。本书从加速,效率,有效性和时间性能方面介绍了算法的性能度量。

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