Simplified limit analysis techniques have already been employed for limit load estimation on the basis of linear elastic finite element analysis (FEA) assuming elastic-perfectly-plastic material model. Due to strain hardening, a component or a structure can store supplementary strain energy and hence carries additional load. In this paper, an iterative elastic modulus adjustment scheme is developed in context of strain hardening material model utilizing the “strain energy density” theory. The proposed algorithm is then programmed into repeated elastic FEA and results from the numerical examples are compared with inelastic FEA results.
Plastic Response Estimation in Repeated Elastic Analyses for Strain Hardening Material Model
Contributed by the Pressure Vessel and Piping Division of ASME for publication in the Journal of Pressure Vessel Technology. Manuscript received August 8, 2012; final manuscript received April 10, 2013; published online August 26, 2013. Assoc. Editor: Haofeng Chen.
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Mahmood, S. L., Adibi-Asl, R., and Daley, C. G. (August 26, 2013). "Plastic Response Estimation in Repeated Elastic Analyses for Strain Hardening Material Model." ASME. J. Pressure Vessel Technol. October 2013; 135(5): 051201. https://doi.org/10.1115/1.4024448
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