Applications of EPP Constitutive Model in Impact Test Simulation
LIU Cheng1, LIU Xun1, SHEN Xun-le2
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(1)Shaanxi University of Science & Technology, Xi'an 710021, China; (2)Nefab Packaging Engineering (Wuxi) Co. Ltd., Wuxi 201206, China
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History+
Issue Date
2016-11-21
Abstract
EPP drop test by DY-3 test machine was simulated by using ANSYS LS-DYNA and loading curves from stress-strain data fitted by compression constitutive equation. Response acceleration-time curves were obtained and compared with experimental result. Comparison results showed that the error of simulation result is less than 10%, which means that the fitting data derived by static compression constitutive equation can not only overcome the inaccuracy of simplifying EPP as a linear material, but also avoid using experiment to obtain the loading curve.