Impact damage of steel plate and welding steel plate under multiple Underwater Explosions
ZHANG Fei1,2,3, ZHANG Chunhui1, ZHANG Lei1, WANG Zhijun1, LI Xudong1,2
1. Naval Research Academy, Beijing 100161, China;
2. School of Mechanical Engineering, North University of China, Taiyuan 030051, China;
3. The 710 Research Institute, China Shipbuilding Industry Corporation, Yichang 443003, China
Abstract:In order to study the anti-explosion and anti-shock ability of warship structure under multiple underwater explosion loads, several underwater explosion tests of marine A32 backspace steel plate and welding plate of 5mm and 12 mm were carried out based on the underwater explosion bulging test, the plastic deformation history of steel plate and welding plate was obtained, the deflection and thickness reduction rate of the points along radius in impact area of steel plate and welding plate were measured and calculated. The plastic deformation law of steel plate and welding plate was analyzed. The results show that under the action of multiple underwater explosion loads, the plastic deformation morphology of welding plate and steel plate is in the shape of spherical crown, and their thickness reduction rate decreases at first and then increases from the center position to the boundary. But the deflection of the welding plate is less than that of the steel plate. The deformation mode of A32 steel plate is mainly bending and stretching, and the welding plate is mainly bending. The continuous increase of underwater explosion load leads to the tensile fracture at the center and boundary of the steel plate, while the brittle fracture occurs in the weld and its heat-affected zone of the welding plate.
[1]张成亮,朱锡,侯海量,等.近距空爆下复合抗爆舱壁变形破坏模式试验研究[J]. 振动与冲击,2014,33(11):33-37.
ZHANG Chengliang, ZHU Xi, HOU Hailiang, et al. Model tests forde formation and destruction modes of a blast resistant bulkhead under near distance explosion[J]. Journal of Vibration and Shock,2014,33(11):33-37.
[2]李思宇,李晓彬,赵鹏铎.近爆荷载作用下固支水背方板的变形挠度研究[J]. 振动与冲击,2017,36(14):174-177.
LI Siyu, LI Xiaobin, ZHAO Pengduo. Deflection of clamped square plates subjected to a close-range explosion[J]. Journal of Vibration and Shock, 2017,36(14):174-177.
[3]FOX E N. A review of underwater explosion phenomena[J]. Underwater Explosion Research,1947,1(1):60-62.
[4]U.S. Navy, MIL-STD-2149A(SH),1990.
[5]TAEWON P,YOUNGBEUM S,HONGKYU K,et al. Outline of explosion bulge test in air of welding structure[J]. Journal of KWJS,2010,28(1):10-15.
[6]ADAPAKA S K, KALAN U G, PYDISETTY V E R, et al. Blast loading of underwater targets-A study through Explosion Bulge Test experiments[J]. International Journal of Impact Engineering,2015,76(5):189-195.
[7]GRIMSMO E L, CLAUSEN A H, et al. Fillet welds subjected to impact loading-an experimental study[J]. International Journal of Impact Engineering,2017,108(4):101-113.
[8]薛贵省.爆炸荷载作用下固支方板的变形和破损分析[D]. 哈尔滨: 哈尔滨工程大学,2013.
[9]MURR L E, MEYERS M A. Metallurgical effects of shock and pressure waves in metals[J]. Explosive Welding, Forming and Compaction, 1983:83-121.
[10]袁中涛.700 MPa级低合金高强度钢焊接接头组织及性能研究[D]. 马鞍山: 安徽工业大学,2013.
[11]LATOURTE F, WEI X D, ESPINOSA H D, et al. Design and identification of high performance steel alloys for structures subjected to underwater impulsive loading[J]. International Journal of Solids and Structures,2012,49:1573-1587.