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ELASTIC EFFECT IN DYNAMIC RESPONSE OF PLASTIC CANTILEVER BEAMS TO IMPACT

Hou Weijian1;Yu Tongxi2;Su Xianyue1 1 Department of Mechanics, Peking University, Beijing 100871, P. R. China 2 Department of Mechanical Engineering, UMIST, Manchester, M60 1QD, UK  
A lumped masses-springs model is proposed to analyze the dynamic response of an elastic-plastic cantilever beam resulting from impact. The numerical results are in good agreement with those by finite-element approaches. The simplified model can catch the most essential features of elastic-plastic response of beams; in particular, it demonstrates the effect of elastic deformation on the distribution of bending moment and energy dissipation, and provides valuable quatitative results.
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