侧向约束陶瓷抗侵彻性能试验研究
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摘要
为研究无约束、无预应力约束及预应力约束3种条件下陶瓷抗侵彻性能的变化规律,设计了陶瓷抗侵彻穿深(Depth Of Penetration,DOP)试验,利用57 mm轻气炮试验系统分别在3种条件下对陶瓷块的抗侵彻性能进行了试验,并对试验后的陶瓷及爆炸模拟破片的碎片进行回收,对破片断面进行250倍微观形貌观察。结果表明:与无约束条件相比,无预应力约束及预应力约束可有效改变陶瓷破坏模式,对陶瓷抗侵彻能力增强明显,且这2种条件下陶瓷破碎尺寸更加细小,侵彻破片断面破坏明显加剧; 3种条件下,陶瓷防护系数排序为无约束<无预应力约束<预应力约束。
In order to study the change rule of ceramics anti-penetration performance under three conditions of unconstrained,non-prestressing constraints and prestressing constraints,a DOP( Depth of Penetration) test of ceramics anti-penetration is designed. The anti-penetration performance of ceramic blocks under three conditions is tested with 57 mm light gas gun test system. The fragments of the ceramic and explosion simulation fragment are recycled after the test,and a 250-fold microscopic observation is performed on the fragments section. The results show that compared with the unconstrained condition,the non-prestressing constraints and prestressing constraints can effectively change the failure mode of ceramics and enhance the anti-penetration ability of ceramics. Under these two conditions,the breakage size of ceramics is smaller and the fracture section of penetrating fragments is more serious. Under the three conditions,the ceramic protective coefficient is sorted as unconstrained < non prestressing constraint
In order to study the change rule of ceramics anti-penetration performance under three conditions of unconstrained,non-prestressing constraints and prestressing constraints,a DOP( Depth of Penetration) test of ceramics anti-penetration is designed. The anti-penetration performance of ceramic blocks under three conditions is tested with 57 mm light gas gun test system. The fragments of the ceramic and explosion simulation fragment are recycled after the test,and a 250-fold microscopic observation is performed on the fragments section. The results show that compared with the unconstrained condition,the non-prestressing constraints and prestressing constraints can effectively change the failure mode of ceramics and enhance the anti-penetration ability of ceramics. Under these two conditions,the breakage size of ceramics is smaller and the fracture section of penetrating fragments is more serious. Under the three conditions,the ceramic protective coefficient is sorted as unconstrained < non prestressing constraint
引文
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[5] FRANZEN R R,ORPHAL D L,ANDERSON C E. The influence of experimental design on depth-of-penetration(DOP)test results and derived ballistic efficiencies[J]. International journal of impact engineering,1997,19(8):727-737.
[6]曹凌宇,罗兴柏,刘国庆,等.侧向约束陶瓷抗侵彻性能数值模拟[J].装甲兵工程学院学报,2018,32(3):54-60.
[7] WOODWARD R L. A simple one-dimensional approach to modeling ceramic composite armour defeat[J]. International journal of impact engineering,1990,9(4):455-474.
[8]赵旭东.陶瓷/金属/纤维复合靶板抗侵彻特性研究[D].石家庄:陆军工程大学,2018:34-36.
[2] WESTERLING L,LUNDBERG P. The influence of confinement on the protective capability of ceramic amour at two different velocities[C]∥Proceedings of the 15th International Symposiumon Ballistics. 1995:283-290.
[3]谈梦婷,张先锋,何勇,等.长杆弹撞击装甲陶瓷的界面击溃效应数值模拟[J].兵工学报,2016,37(4):627-634.
[4] CHI R Q,SERJOUEI A,SRIDHAR I,et al. Pre-stress effect on confined ceramic armor ballistic performance[J]. International journal of impact engineering,2015,84(5):159-170.
[5] FRANZEN R R,ORPHAL D L,ANDERSON C E. The influence of experimental design on depth-of-penetration(DOP)test results and derived ballistic efficiencies[J]. International journal of impact engineering,1997,19(8):727-737.
[6]曹凌宇,罗兴柏,刘国庆,等.侧向约束陶瓷抗侵彻性能数值模拟[J].装甲兵工程学院学报,2018,32(3):54-60.
[7] WOODWARD R L. A simple one-dimensional approach to modeling ceramic composite armour defeat[J]. International journal of impact engineering,1990,9(4):455-474.
[8]赵旭东.陶瓷/金属/纤维复合靶板抗侵彻特性研究[D].石家庄:陆军工程大学,2018:34-36.