| 摘要(英) |
For a long time, the behavior of bullet impacts on targets, also known as penetration behavior, has been a persistent research topic in the defense industry. Relevant research literature indicates that the composition of target materials, the geometry of the bullet, and the angle of impact are all closely related to the damage behavior. Therefore, this study, based on experimental results from previous research, investigates the mechanical behavior of bullet impacts on metal plates using the Material Point Method (MPM) in numerical simulations. By varying the bullet geometry, angle of incidence, and initial velocity, this study explores the relationship between these conditions and the damage behavior post-impact.
The primary reason for selecting the Material Point Method as the computational method in this paper is that MPM belongs to the category of particle methods in numerical mechanics. Unlike mesh-based methods, MPM has computational advantages for large deformations, high-speed impacts, and damage behavior.
In view of this, this paper compares the computational results of MPM with experimental and finite element method (FEM) simulation results from the literature. It explores the applicable constitutive laws, damage models, mechanical properties, and, most importantly, the applicability of MPM for simulating bullet impacts. This series of related results is expected to serve as reference material for research fields such as particle methods, fracture mechanics, and ballistic impacts. |
| 參考文獻 |
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