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Volume 40 Issue 11
Nov.  2014
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Journal of Beijing University of Aeronautics and Astronautics  > 2014  >  40(11): 1555-1562.
Kang Jun, Guan Zhidong, Li Zengshan, et al. Long-term open-hole compression strength prediction of composite laminates[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(11): 1555-1562. doi: 10.13700/j.bh.1001-5965.2013.0681(in Chinese)
Citation: Kang Jun, Guan Zhidong, Li Zengshan, et al. Long-term open-hole compression strength prediction of composite laminates[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(11): 1555-1562. doi: 10.13700/j.bh.1001-5965.2013.0681(in Chinese)
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Long-term open-hole compression strength prediction of composite laminates

doi: 10.13700/j.bh.1001-5965.2013.0681

  • School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • Received Date: 26 Nov 2013
  • Publish Date: 20 Nov 2014
    Abstract
  • Accelerated testing methodology (ATM) predicts long-term strength in low temperature with short-term in high temperature, which is based on the viscoelasticity of matrix and the time-temperature superposition principle (TTSP). The strain invariant failure theory (SIFT) was modified by using micro maximum strain criteria to judge fiber tensile and compressive failure. Master curve of storage modulus of epoxy resin and the time-temperature shift factors were tested from dynamic mechanical analysis(DMA). Master curves of SIFT critical parameters were constructed by tension and compression test for unidirectional carbon fiber reinforced plastics (CFRP) under various temperatures with the time-temperature shift factors of matrix resin. Long-term compression strength of open-hole composite laminates was predicted based on SIFT/ATM combined method. The damage process of fiber and matrix was simulated by progressive damage analysis as well. Good agreement between numerical results and experiments was observed, which demonstrates the applicability of this method.

     

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    • References(15)
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