LONG-TERM LIFE PREDICTION OF COMPOSITE MATERIALS BASED ON ACCELERATED TESTING METHODOLOGY

Abstract

Abstract: A long-term fatigue life and failure process analysis methods were proposed based on micro-mechanics of failure (MMF), accelerated testing methodology (ATM) and progressive damage analysis (PDA) combined method. MMF theory was modified by distinguishing matrix tensile and compressive failure. The calculation process of MMF/ATM/PDA analysis method in finite element analysis was established. The implementation procedure in ABAQUS using UMAT was described in detail. The time and temperature dependent MMF/ATM critical parameters of composite materials were determined by measuring the static and fatigue life at different temperatures in the longitudinal and transverse, tension and compression directions of unidirectional CFRP. Long-term life of open-hole composite laminates and the damage process of fiber and matrix were predicted based on MMF/ATM/PDA combined method. The results show that the test results and the prediction results are in good agreement, demonstrating the validity of this method.

Key words: composite materials, acelerated testing methodology, micro-mechanics of failure, progressive damage analysis, life prediction

CLC Number:

V257
TB332

KANG Jun, CHEN Yong-qiang, CHEN Shang, MU Xing-ke. LONG-TERM LIFE PREDICTION OF COMPOSITE MATERIALS BASED ON ACCELERATED TESTING METHODOLOGY[J]. Fiber Reinforced Plastics/Composites, 2017, 0(3): 25-30.

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