反向
质量矩阵
球体
逆动力学
基质(化学分析)
动力学(音乐)
数学
有限元法
经典力学
数学分析
应用数学
物理
材料科学
复合材料
几何学
运动学
声学
热力学
天文
核物理学
中微子
作者
Hyun-Young Nam,Mi Ok Yu,Gunwoo Noh
标识
DOI:10.1016/j.compstruc.2024.107296
摘要
This work aims to enable explicit dynamics in the method of finite spheres (MFS). We propose a method to apply a direct inverse mass matrix with the modified local mass matrix for explicit dynamics in the MFS. We show that the performance of the proposed method depends on the proper selection of the modification parameters and set of enriched functions; hence, solution accuracy can be improved by choosing them optimally. Furthermore, we analyze the effects of time integration schemes when the MFS with the proposed method is used; the results show that the proposed method with the Noh-Bathe explicit method is remarkably accurate, and its performance is comparable to that of the widely used ρ∞-Bathe implicit method.
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