Analysis on cushion performance of quartz sand in high-g shock
Yan Wang1, Tiehua Ma1, Jiangjiang Zhu2
COMPUTER MODELLING & NEW TECHNOLOGIES 2014 18(12D) 367-370
1 Key Lab on Instrumentation Science & Dynamic Measurement of the Education Ministry of China, North University of China, Taiyuan 030051, China
2 School of Instrument and Electronics, North University of China, Taiyuan 030051, China
The cushion protection for light mass electronic instruments in projectile is of vital importance to the normal work of an ammunition system. Quasi-static compression tests were conducted on two kinds of quartz sand with different grain diameters and their energy absorption abilities were analyzed. The cushion effect under high g shock was studied by using air gun. The results of experiments show that the quartz sand material takes in energy by grain breakage and the energy absorption ability in unit volume, the energy absorption ability in unit mass and the ideal energy absorption efficiency all improve with the increase of grain diameter. The cushion efficiency of the coarse quartz sand material with grain diameter of 1.0mm to 5.0mm can reach more than 50% under high g shock. This provides a favorable cushion protection for light mass equipment.