Numerical investigation of composite metal foams using substructure techniques

IF 6.3 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composite Structures Pub Date : 2024-11-20 DOI:10.1016/j.compstruct.2024.118731

Márió Kovács , Balázs Pere , Imre Norbert Orbulov

引用次数: 0

Abstract

An accurate description of the mechanical behaviour of inhomogeneous, anisotropic composite materials, such as metal matrix syntactic foams (MMSFs), is a challenging task. This paper is based on the so-called substructure technique, which has never been used for the mechanical modelling of metal foams or MMSFs. Using this method, a finite element model with low computational requirements but still modelling inhomogeneous properties can be constructed that reproduces the results of laboratory measurements with high accuracy. In all cases, the tests presented in this paper are limited to the linearly elastic phase. As the most common investigation of MMSFs is the compression test, this study considers only this loading case. A more detailed discussion of the stress analysis of MMSFs is given at the end of this work. A potential cause of 45° crack planes during compression tests and the evolution of stresses as a function of space-filling are also investigated.

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利用子结构技术对复合金属泡沫进行数值研究

准确描述非均质、各向异性复合材料（如金属基合成泡沫（MMSF））的机械性能是一项具有挑战性的任务。本文基于所谓的子结构技术，该技术从未用于金属泡沫或 MMSF 的力学建模。利用这种方法，可以构建出计算要求低但仍能模拟不均匀特性的有限元模型，从而高精度地再现实验室测量结果。在所有情况下，本文介绍的测试仅限于线性弹性阶段。由于对 MMSFs 最常见的研究是压缩试验，因此本研究只考虑这种加载情况。关于 MMSF 的应力分析的更详细讨论将在本文末尾给出。此外，还研究了压缩试验中出现 45° 裂纹平面的潜在原因，以及应力随填充空间变化的情况。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Composite Structures 工程技术-材料科学：复合

CiteScore

12.00

自引率

12.70%

发文量

1246

审稿时长

78 days

期刊介绍： The past few decades have seen outstanding advances in the use of composite materials in structural applications. There can be little doubt that, within engineering circles, composites have revolutionised traditional design concepts and made possible an unparalleled range of new and exciting possibilities as viable materials for construction. Composite Structures, an International Journal, disseminates knowledge between users, manufacturers, designers and researchers involved in structures or structural components manufactured using composite materials. The journal publishes papers which contribute to knowledge in the use of composite materials in engineering structures. Papers deal with design, research and development studies, experimental investigations, theoretical analysis and fabrication techniques relevant to the application of composites in load-bearing components for assemblies, ranging from individual components such as plates and shells to complete composite structures.