Nonlinear analysis of AS4/PEEK thermoplastic composite laminate using a one parameter plasticity modelA one-parameter plasticity model was shown to adequately describe the orthotropic plastic deformation of AS4/PEEK (APC-2) unidirectional thermoplastic composite. This model was verified further for unidirectional and laminated composite panels with and without a hole. The nonlinear stress-strain relations were measured and compared with those predicted by the finite element analysis using the one-parameter elastic-plastic constitutive model. The results show that the one-parameter orthotropic plasticity model is suitable for the analysis of elastic-plastic deformation of AS4/PEEK composite laminates.
Sun, C. T. (NASA Langley Research Center Hampton, VA, United States)
Yoon, K. J. (Purdue University West Lafayette, IN, United States)
August 15, 2013
January 1, 1990
Meeting: Japan-U.S. Conference on Composite Materials