Improved Smoothed Particle Hydrodynamics for the Three-Dimensional Solid Impact Problems

被引：0

作者：

Wang, Lu ^{[1
]}

Xu, Fei ^{[2
]}

Yang, Yang ^{[2
]}

机构：

[1] Changan Univ, Sch Civil Engn, Xian 710061, Peoples R China

[2] Northwestern Polytech Univ, Sch Aeronaut, Xian 710072, Peoples R China

来源：

INTERNATIONAL JOURNAL OF COMPUTATIONAL METHODS | 2024年 / 21卷 / 06期

关键词：

Total Lagrangian SPH method; tensile instability; damage model; SPH METHOD;

D O I：

10.1142/S0219876224500105

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Total Lagrangian-Smoothed Particle Hydrodynamics (TL-SPH) method is an important method to improve the tensile instability of traditional SPH, but it still faces some defects, such as insufficient accuracy at boundary region, difficulty in obtaining damage and applying interface conditions. Therefore, the high-order TL-SPH is applied for the elastic-plastic solid. A damage model is proposed by adaptively transforming the type of kernel function. Furthermore, a Riemann contact algorithm is introduced for different solids. The advantages of the methods in improving tensile instability and simulating damage are verified by the cases of the plates and the notched beams with an impact load.

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页数：19

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