Simplified formula of penetration depth for yaw-inducing bursting layer impacted by projectile

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• 作者：CHEN Wan-xiangYE Jun-huaGUO Zhi-kunDai Xiao-qingLin Ke-xin
• 会议时间：2013-07-01
• 关键词：solid mechanics ; penetration depth ; contact mechanics ; computation method ; influencing coefficient
• 作者单位：CHEN Wan-xiang(State Key Laboratory for Disaster Prevention & Mitigation of Explosion, PLA Univ.of Sci.& Teeh., Nanjing, 210007, China; State Key Laboratory for Geomechanics & Deep and Underground Engineering, China Mining and technology university, Xuzhou,221116, China)YE Jun-hua,GUO Zhi-kun,Dai Xiao-qing(State Key Laboratory for Disaster Prevention & Mitigation of Explosion, PLA Univ.of Sci.& Teeh., Nanjing, 210007, China)Lin Ke-xin(Airport and Barracks Office of Air Force Logistice Department in Guangzhou Military Region, Guangzhou 514000)
• 母体文献：第3届中俄矿山深部开采岩石动力学高层论坛论文集
• 会议名称：第3届中俄矿山深部开采岩石动力学高层论坛
• 会议地点：南京
• 主办单位：中国工程院
• 语种：chi

摘要

Bursting layer with irregular barriers on surface was a new composite bursting layer that had already caused people's attentions about protective engineerings all over the world.A simplified computation formula of penetration depth for yaw-inducing bursting layer with irregular barriers on surface impacted projectile with probability was presented on the basis of computation method of penetration depth for normal impact or oblique impact.The influencing factors such as the attack angle, angular velocity, impact attitude of projectile and the uncontrolled free surface of target were synthetically considered for the computation formula by introducing the influencing coefficient of oblique impact and the influencing coefficient of yaw-inducing layer with normal impact.It was shown that the value of influencing coefficient of oblique impact was decreased with both impact angle and initial attacking angle increased, and also increased with impact velocity increased.The value of influencing coefficient of yaw-inducing layer was decreased with impact velocity increased.Computation results of the simplified formula were in good agreement with the test datum, it was indicated that the simplified computation formula could be used to accurately estimate the penetration depth for yaw-inducing bursting layer with irregular barriers on surface impacted by projectile.