Fatigue life prediction of composite laminates by FEA simulation method

Abstract. based on the accumulating fatigue damage model, with single ply plate theory and experiment data as the foundation, consider the interaction between adjacent layer and material degradation, a kind of fatigue life prediction method of fiber reinforced composite laminates is developed. The stiffness decline of each ply during cyclic loading is determined by the fatigue damage variable and the load amplitude and the fatigue life of any laminates can be predicted using the fatigue properties of single ply plate. Using this method a 3D Finite element model is established by ABAQUS software and the fatigue life and the fatigue damage evolution of a T300 / QY8911 laminats are analyzed, the results are more closer to the experimental results.

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Fatigue Life Prediction of Composite Laminates Based on Progressive Damage Analysis

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1064.108 ◽

2014 ◽

Vol 1064 ◽

pp. 108-114 ◽

Cited By ~ 1

Author(s):

Jun Kang ◽

Zhi Dong Guan ◽

Zeng Shan Li ◽

Zhun Liu

Keyword(s):

Fatigue Life ◽

Fatigue Damage ◽

Material Property ◽

Composite Laminates ◽

Life Prediction ◽

Shear Failure ◽

Fatigue Life Prediction ◽

Progressive Damage ◽

Damage Analysis ◽

Fatigue Damage Analysis

A three dimensional analysis model is developed on the fatigue life prediction of composite laminates based on a progressive damage analysis. This model consists of stress analysis, fatigue failure analysis and material property degradation. Teserpe’s failure criteria is used to fatigue damage analysis. Fiber tensile/compressive breakage, matrix tensile/compressive cracking, matrix/fiber shear failure and tension/compression delamination are considered in fatigue damage analysis. The methodologies of sudden degradation and gradual degradation are both applied in the material property degradation. The stiffness and strength gradual degradation is based on the Shokrieh fatigue model, which is based on fatigue test for unidirectional laminates. In order to consider the scatter of the material in the practical structures, the stiffness and strength of the material are randomly distributed using normal distribution in the numerical model. The progressive fatigue damage model is developed in finite element code ABAQUS through user subroutine UMAT, which can simulate the fatigue damage process. Fatigue life of different ply stacking sequences and geometries composite laminates under different cycle loading are predicted. The predicted fatigue life is in good agreement with the experimental results.

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Fatigue life prediction and influencing factors analysis of mesh flexible spoke non-pneumatic tire

Advances in Mechanical Engineering ◽

10.1177/16878140211052454 ◽

2021 ◽

Vol 13 (10) ◽

pp. 168781402110524

Author(s):

Hongxun Fu ◽

Xiaoxia Chen ◽

Qiang Zhao ◽

Zhen Xiao ◽

Xuemeng Liang

Keyword(s):

Fatigue Life ◽

Life Prediction ◽

Optimization Design ◽

Structural Parameters ◽

Prediction Method ◽

Simulation Method ◽

Fatigue Life Prediction ◽

Fatigue Performance ◽

Driving Safety ◽

Pneumatic Tire

A mesh flexible spoke non-pneumatic tire is designed to avoid tire burst and other hidden dangers in the traditional pneumatic tires, and improve driving safety. The purpose of this study is to explore the fatigue performance and fatigue life prediction method of the non-pneumatic tire and analyze the influence of structural parameters on the fatigue life of non-pneumatic tire. Based on the crack propagation method of energy release rate by J-integral, the fatigue life of the meshed flexible spoke non-pneumatic tire is predicted. Using numerical simulation method, the influence of key structural parameters, such as the curvature, unit angle and thickness of the lateral spoke and the tread thickness, on tire fatigue life is studied. The results show that the fatigue life prediction method proposed can be used to predict the fatigue life of flexible spoke non-pneumatic tire, and the fatigue life of non-pneumatic tire with flexible spoke can be improved by selecting appropriate structural parameters, which could provide some reference for the structural optimization design of the fatigue performance of the non-pneumatic tire.

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