Experimental and numerical investigation of single pores for identification of effective metal foams properties

Experimental and numerical investigation of single pores for identification of effective metal foams properties
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用于识别有效金属泡沫特性的单孔实验和数值研究

DOI:
10.1002/zamm.201700045
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发表时间:
2018
期刊:
ZAMM ‐ Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik
影响因子:
--
通讯作者:
Diebels
Diebels
中科院分区:
--
文献类型:
--
作者:
Heinze;Bleistein;Düster;Diebels

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金属泡沫是一类有趣的仿生材料,可用作轻质建筑元件或能量吸收器。泡沫是微观异质材料,由于复杂的结构性能关系,部件的整体力学性能受到局部微观力学性能的强烈影响。目前的贡献涉及通过对单个泡沫孔进行新的微压缩测试来识别泡沫铝的有效微观材料参数。使用完全解析的微观模型的有限元模拟通过反演计算来进行参数识别。使用有限元方法,确定的参数随后用于模拟不同的孔隙,从而通过从基于图像的模型(例如 CT 扫描)自动导出空间离散来减少预处理的工作量。
Metal foams are an interesting class of biomimetic materials that are used as lightweight construction elements or as energy absorbers. Foams are micro heterogeneous materials, and the global mechanical properties of a component are strongly affected by the local micro mechanical properties due to a complex structure‐property relationship. The present contribution deals with the identification of effective micro material parameters of aluminum foams from new micro‐compression tests on individual foam pores. Finite element simulations using a fully resolved micro model are applied for parameter identification by inverse calculation. Using the Finite Cell Method, the identified parameters are then used to simulate different pores, so as to reduce the effort of preprocessing by automatically deriving spatial discretizations starting from image‐based models such as CT‐scans.
Ni/Al 混合泡沫的应变率依赖性
DOI: --
发表时间: 2015
期刊:
影响因子: --
作者:
A. Jung;Martin Larcher;O. Jiroušek;P. Koudelka;G. Solomos
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发表时间: 2016-01-01
期刊: ACTA MATERIALIA
影响因子: 9.4
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影响因子: 8.4
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