Parametric finite element modeling method for fiber reinforced composite bolted structures

doi:10.19936/j.cnki.2096-8000.20240828.008

Abstract

Abstract: Finite element is an effective method for the strength analysis of bolted structure of fiber reinforced composites, in order to improve its efficiency of finite element modeling, the finite element parametric modeling method for fiber reinforced composite bolted structureswas studied based on ABAQUS analysis platform. According to the characteristic of bolted structure and the requirements of strength analysis of fiber reinforced composites bolted structure, the special GUI graphical parameter input interfaceswere developed by GUI plug-in, a kernel script program for finite element modeling of bolted structure was developed with Python, and a user damage subroutine for failure criterion and stiffness degradation was written in Fortran. A parametric finite element modeling and strength analysis platform for the bolted structure of fiber reinforced composites was established. Taking the three-nail bolted structure of carbon/glass hybrid composite and the ten-nail bolted structure of T800 carbon fiber composite as examples, the failure load and failure mode of the bolted structure were simulated and analyzed. Comparing with the experimental test results, the failure load error is about 3%, and the failure mode is same as experimental phenomenon. The research results show that the parametric finite element modeling and strength analysis platform can realize automatic modeling rapidly of various bolted structure of fiber reinforced composites with accurate and reliable analysis results, which provides an effective way for rapid strength analysis and engineering optimization design of fiber reinforced composites bolted structure.

Key words: fiber reinforced composites, mechanical connection, finite elements, parametric modeling

CLC Number:

TB332

WANG Haoda, ZHU Fuxian, HU Kejun, XU Xianyi. Parametric finite element modeling method for fiber reinforced composite bolted structures[J]. COMPOSITES SCIENCE AND ENGINEERING, 2024, 0(8): 53-61.

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