微孔结构对PMI泡沫准静态压缩性能的影响

doi:10.11896/j.issn.1005-023X.2017.020.030

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Abstract On the basis of the BBC points set, the Kelvin tetrakaidecahedron and Laguerre tessellation models for the polymethacrylimide (PMI) closed-cell foam were established. The quasi-static compression performance was analyzed by finite element method. The effects of cell size and cell volume dispersion on compression modulus, initial peak stress, and energy absorptivity were discussed. Numerical results showed that the tetrakaidecahedron model can predict the compression elastic modulus and initial peak stress of the PMI foam quite well. Under the same relative density, the smaller cell size will lead to higher initial peak stress and higher energy absorption capacity,but lower compression elastic modulus. The compression elastic modulus, initial peak stress and energy absorption capacity of the closed-cell PMI foam decreases with the increasing cell volume dispersion.

Key words： polymethacrylimide closed-cell foam Kelvin tetrakaidecahedron model Laguerre tessellation elastic modulus initial peak stress

Published: 05 May 2018

CLC number:	TB332
	TQ328.2

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	Articles by authors
	ZHOU Jinglong
	LI Wenxiao
	XUE Peng

Cite this article:

ZHOU Jinglong,LI Wenxiao,XUE Peng. The Effects of Microcell Structure on Quasi-static Compression Performance of PMI Foam[J]. Materials Reports, 2017, 31(20): 147-151.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.020.030 OR http://www.mater-rep.com/EN/Y2017/V31/I20/147

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