Impact Energy Calculated by a Plastic Material Deformation

Abstract:

Using a plastic material model to assess the injury energy of liver, the material must have excellent plastic deformation and with high-accuracy relationship between impact energy and deformation. In this paper we prepared a plastic material which composited of potassium stearate, paraffin liquid and novolac epoxy resin (F-51) with weight ratio 0.78/0.22/0.04. The elastic modulus values (Automatic young's) and yield stress data (yield strain 2%) were 54.44 MPa and 0.04185 MPa, measured by the Instron-8071. The deformation increased with impact energy obviously in impact experiment, we fit data with both an exponential curve and a second-order polynomial curve, the formulas were E=3.84687*e^(0.07476*Delta V)-3.20572and E=0.02428*(Delta V)^2+0.14718*Delta V+0.9778, the correlation coefficients were R^2=0.9510 and R^2=0.9544, respectively. These results indicated that the impact energy can be calculated from deformation, and the plastic material could be made a better model for assessing the injury energy of liver.

• Periodical: Applied Mechanics and Materials (Volumes 275-277)
• Pages: 38-43
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.275-277.38
• Online since: January 2013
• Authors: Fu Ping Wang, Cheng Jian Feng, Chen Xu, Kai Xiao, Yong Min Yu, Zhi Yong Yin
• Keywords: Impact Energy, Liver Injury Energy, Plastic Deformation, Plastic Material

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