Micro-modeling and analysis of woven composites based on embedded constraints method

doi:10.19936/j.cnki.2096-8000.20230928.014

Abstract

Abstract: In order to improve the modeling efficiency of woven composites under the premise of ensuring calculation accuracy, a finite element model of planar woven composites with embedded constraints and tie constraints is established in this paper. The strain-stress curve, stress distribution and failure propagation of the two models were studied by finite element method of progressive damage analysis. The results of the comparative analysis show that the embedded constraint model can obtain simulation results close to the tie model. The embedded constraints model can obtain different simulation accuracy through different preprocessing methods. Appropriate reduction of the properties of the matrix elements that have spatial intersections with fiber bundles can effectively improve the strength simulation accuracy. In addition, this paper presents a method for automatically determining the yarn trajectory of planar woven composites, which can further improve the modeling efficiency through programming.

Key words: woven composites, embedded constraints, tie constraints, finite element, micro-mechanical model

CLC Number:

TB332

WANG Ping’an. Micro-modeling and analysis of woven composites based on embedded constraints method[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(9): 92-97.

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