TY - JOUR

T1 - Study on mechanical property of the shell and the unpacking initial velocity of display shells

AU - Yan, Peiyu

AU - Cong, Xiaomin

AU - Du, Zhiming

N1 - Publisher Copyright:
© 2014 The Authors. Published by Elsevier Ltd.

PY - 2014

Y1 - 2014

N2 - Using Elastic properties of solid materials tester to test the elastic properties of the shell of display shells, obtain that Young's modulus is 2.16GPa, Shear modulus is 0.87GPa and Poisson's ratio is 0.241GPa. Using Instron 5985 Material testing machine to test the tensile mechanical characteristics of the shell, obtain that the tensile yield strength is 14.72MPa and breaking strength of the shell is 11.20MPa. For the first time taking pressure expansion leading to shell burst as foundation, the model of display shells is established. The numerical simulation results show that when the unpacking gunpowder is black gunpowder, the unpacking initial velocity is 104.6m/s-114.8m/s. Comparing with the experiment result 112m/s, maximum error is only 7.4m/s, meeting the requirement of precision. When the unpacking gunpowder is black gunpowder the unpacking initial velocity is 303.7m/s-331.2m/s. The unpacking initial velocity can be changed by changing the ratio of charge.

AB - Using Elastic properties of solid materials tester to test the elastic properties of the shell of display shells, obtain that Young's modulus is 2.16GPa, Shear modulus is 0.87GPa and Poisson's ratio is 0.241GPa. Using Instron 5985 Material testing machine to test the tensile mechanical characteristics of the shell, obtain that the tensile yield strength is 14.72MPa and breaking strength of the shell is 11.20MPa. For the first time taking pressure expansion leading to shell burst as foundation, the model of display shells is established. The numerical simulation results show that when the unpacking gunpowder is black gunpowder, the unpacking initial velocity is 104.6m/s-114.8m/s. Comparing with the experiment result 112m/s, maximum error is only 7.4m/s, meeting the requirement of precision. When the unpacking gunpowder is black gunpowder the unpacking initial velocity is 303.7m/s-331.2m/s. The unpacking initial velocity can be changed by changing the ratio of charge.

KW - Autodyn

KW - Display shells

KW - Pressure expansion

KW - The unpacking initial velocity

UR - http://www.scopus.com/inward/record.url?scp=84922319514&partnerID=8YFLogxK

U2 - 10.1016/j.proeng.2014.10.503

DO - 10.1016/j.proeng.2014.10.503

M3 - Conference article

AN - SCOPUS:84922319514

SN - 1877-7058

VL - 84

SP - 834

EP - 839

JO - Procedia Engineering

JF - Procedia Engineering

T2 - 2014 9th International Symposium on Safety Science and Technology, ISSST 2014

Y2 - 4 November 2014 through 6 November 2014

ER -