Effects of rubber buffer unit on launch performance of a sniper grenade launcher

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Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (23) : 241-246.

ZHAO Paihang，WANG Ruilin，LI Yongjian，JIA Yunfei，KANG Xiaoyong

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Abstract

In order to study effects of rubber cushion on launch performance of a sniper grenade launcher,the constitutive models of the rubber buffer under static load and different average strain rates were studied with static and dynamic loading tests to construct the whole weapon system’s dynamic simulation model.According to the simulation results,the motion curves of automata,cartridge and guide rail were analyzed.These motion curves and the recoil one with or without a cushion were contrastively analyzed.The results showed that the constitutive model of rubber material has obvious nonlinearity,hysteresis and strain rate effect; the material strength gradually increases with increase in strain rate; the buffer action of the rubber cushion can effectively reduce influence of rigid contact on the system and the recoil amplitude; the rubber buffer effectively improves the system stability and ergonomics.The study laid a good foundation for further improvement of this type weapon system.

Key words

Sniper grenade launcher / virtual prototype / rubber cushion / constitutive model / strain rate

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ZHAO Paihang，WANG Ruilin，LI Yongjian，JIA Yunfei，KANG Xiaoyong. Effects of rubber buffer unit on launch performance of a sniper grenade launcher[J]. Journal of Vibration and Shock, 2018, 37(23): 241-246

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