Microscale Simulation on Mechanical Properties of Al/PTFE Composite Based on Real Microstructures

Materials

Yongxiang Dong¹  Wubuliaisan Maimaitituersun¹  Chao Ge¹ 

[1] State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China;

关键词: polymer composites;    Al/PTFE;    finite-element simulation;    microscale modelling;    quasi-static compression;   

DOI  :  10.3390/ma9070590

来源: DOAJ

【 摘 要 】

A novel numerical method at the microscale for studying the mechanical behavior of an aluminum-particle-reinforced polytetrafluoroethylene (Al/PTFE) composite is proposed and validated experimentally in this paper. Two types of 2D representative volume elements (RVEs), real microstructure-based and simulated microstructures, are established by following a series of image processing procedures and on a statistical basis considering the geometry and the distribution of particles and microvoids, respectively. Moreover, 3D finite element modelling based on the same statistical information as the 2D simulated microstructure models is conducted to show the efficiency and effectiveness of the 2D models. The results of all simulations and experiments indicate that real microstructure-based models and simulated microstructure models are efficient methods to predict elastic and plastic constants of particle-reinforced composites.

【 授权许可】

Unknown