复合材料T型加筋低速边缘冲击及剩余压缩强度的数值仿真分析

doi:10.11896/cldb.20010014

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Abstract Composite materials have been widely used in aeronautical structures, even for main load-bearing structures, such as T-cross-sectional stiffe-ners. Impact damage, with low detectability could significantly reduce the residual compressive strength of T-stiffeners. In view of this, a progressive damage simulation process was proposed to predict the mechanical responses of T-stiffeners under impact and compression loading cases. By comparing the experimental data with the predicted values of the simulation model, it was shown that the simulation model could quantitatively give the impact crack length, compression failure strain and residual compression strength. Moreover, the stress-strain responses and final failure morphology could also be predicted by the simulation model. Therefore, the rationality and validity of the simulation method were verified.

Key words： composite materials T-stiffener low-velocity edge impact residual compressive strength numerical simulation

Published: 06 November 2020

CLC number:

V258

Fund:Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).

About author:: Fang Chenhas obtained the B.E. degree in aircraft design and engineering from Nanjing University of Aeronautics and Astronautics (NUAA) in 2013. He is currently a doctoral candidate majoring in aircraft design of NUAA. His research domain is the progressive damage simulation analysis of composite structures.
Weixing Yaois a professor and Ph.D. tutor in the Aerospace College of NUAA. His research interests are composite materials damage mechanics, aircraft multidisciplinary design, and structural fatigue analysis. He has published more than 200 academic papers on well-known domestic and foreign journals, as well as 4 widely-used monographs. He has also won 5 technology progress awards.

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Cite this article:

CHEN Fang,YAO Weixing,WU Fuqiang. A Progressive Damage Simulation Method for the Low Velocity Edge-impact Damage and Residual Compression Strength of Composite T-Stiffeners[J]. Materials Reports, 2020, 34(20): 20130-20136.

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http://www.mater-rep.com/EN/10.11896/cldb.20010014 OR http://www.mater-rep.com/EN/Y2020/V34/I20/20130

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