Polymer plates subjected to impact: Experimental tests and numerical simulationsA.H. Clausen1, 2, M. Polanco-Loria1, 3, R.T. Moura4, M. Alves4, T. Berstad1, 3, M. Langseth1, 2 and O.S. Hopperstad1, 2
1 Department of Structural Engineering, Norwegian University of Science and Technology, Trondheim, Norway
2 Structural Impact Laboratory (SIMLab), Centre for Research-based Innovation, Norwegian University of Science and Technology, Trondheim, Norway
3 SINTEF Materials & Chemistry, Trondheim, Norway
4 Group of Solid Mechanics and Structural Impact (GMSIE), University of São Paulo, Brazil
Published online: 15 September 2009
This paper presents quasi-static and dynamic tests on circular clamped plates made of a PEHD thermoplastic. A brief review of the main results from a material test programme, involving tension and compression tests at different rates, is also provided. The results from the material tests are used to identify the coefficients of a recently proposed hyperelastic-viscoplastic constitutive model for thermoplastics, also outlined here. Finally, the model is employed in numerical simulations of the impact tests. It is shown that the model represents the force-displacement response of the experimental tests fairly well. Also, considering the quasi-static tests, a localized failure mechanism around the impactor is captured.
© EDP Sciences 2009