Study of the dynamic impact spalling of ductile materials based on Gurson-type phase-field model

IF 9.4 1区材料科学 Q1 ENGINEERING, MECHANICAL

International Journal of Plasticity Pub Date : 2024-08-26 DOI:10.1016/j.ijplas.2024.104106

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Abstract

The formation of void damage and spalling failure in ductile metallic materials under strong impact is a well-established phenomenon. In aerospace and defense technology engineering design, understanding the spalling failure process and related mechanisms is of utmost importance. This paper develops an explicit Gurson-type phase-field model that can simulate the void evolution and spalling damage of three-dimensional ductile metallic materials under high-velocity impacts based on the study of Aldakheel et al.. The model incorporates the Gurson-type void evolution equation and the phase-field approach while taking into account the pressure-dependent bulk modulus and inertia effects. This model is used to study the main processes and mechanisms of impacted layer cracking of metals in different dimensions. Meanwhile based on the study of complex spallation cracking processes in metals in two and three dimensions, observing and proposing the formation mechanism of complex spallation cracking modes in materials due to lateral and edge (base angle) rarefied effects.

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基于古尔森型相场模型的韧性材料动态冲击剥落研究

韧性金属材料在强冲击力作用下形成空洞损伤和剥落破坏是一种公认的现象。在航空航天和国防技术工程设计中，了解剥落破坏过程和相关机理至关重要。本文以 Aldakheel 等人的研究为基础，建立了一个明确的 Gurson 型相场模型，可以模拟三维韧性金属材料在高速冲击下的空洞演化和剥落破坏。该模型结合了 Gurson 型空隙演化方程和相场方法，同时考虑了与压力相关的体积模量和惯性效应。该模型用于研究不同尺寸金属的冲击层开裂的主要过程和机理。同时，基于二维和三维金属复杂剥落开裂过程的研究，观察并提出了横向和边缘（基角）稀疏效应导致的材料复杂剥落开裂模式的形成机理。

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来源期刊

International Journal of Plasticity 工程技术-材料科学：综合

CiteScore

15.30

自引率

26.50%

发文量

256

审稿时长

46 days

期刊介绍： International Journal of Plasticity aims to present original research encompassing all facets of plastic deformation, damage, and fracture behavior in both isotropic and anisotropic solids. This includes exploring the thermodynamics of plasticity and fracture, continuum theory, and macroscopic as well as microscopic phenomena. Topics of interest span the plastic behavior of single crystals and polycrystalline metals, ceramics, rocks, soils, composites, nanocrystalline and microelectronics materials, shape memory alloys, ferroelectric ceramics, thin films, and polymers. Additionally, the journal covers plasticity aspects of failure and fracture mechanics. Contributions involving significant experimental, numerical, or theoretical advancements that enhance the understanding of the plastic behavior of solids are particularly valued. Papers addressing the modeling of finite nonlinear elastic deformation, bearing similarities to the modeling of plastic deformation, are also welcomed.