A Study of the Elastodynamic Problem by Meshless Local Petrov-Galerkin Method Using the Laplace-Transform

• 作者: Jaouad Eddaoudy Touria Bouziane
• 来源期刊: 力学国际期刊(英文)
• 学科: 数学
• 关键词: MESHLESS MLPG Weak Form MLS PDES Elastodynamic LAPLACE TRANSFORM Support DOMAIN Quadrature DOMAIN Regular Distribution
• 年，卷（期）: 2018,（2）
• 页码范围: 46-58
• 页数: 13页
• 分类号: O1

摘要

The Meshless Local Petrov-Galerkin (MLPG) with Laplace transform is used for solving partial differential equation. Local weak form is developed using the weighted residual method locally from the dynamic partial differential equation and using the moving least square (MLS) method to construct shape function. This method is a more effective alternative than the finite element method for computer modelling and simulation of problems in engineering;however, the accuracy of the present method depends on a number of parameters deriving from local weak form and different subdomains. In this paper, the meshless local Petrov-Galerkin (MLPG) formulation is proposed for forced vibration analysis. First, the results are presented for different values of as, and aq?with regular distribution of nodes nt=55. After, the results are presented with fixed values of?as?and aq?for different time-step.