多次水下爆炸作用下钢板与焊接钢板冲击损伤特性

张斐1,2,3,张春辉1,张磊1,王志军2,李旭东1,2

振动与冲击 ›› 2020, Vol. 39 ›› Issue (7) : 196-201.

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PDF(1944 KB)
振动与冲击 ›› 2020, Vol. 39 ›› Issue (7) : 196-201.
论文

多次水下爆炸作用下钢板与焊接钢板冲击损伤特性

  • 张斐1,2,3,张春辉1,张磊1,王志军2,李旭东1,2
作者信息 +

Impact damage of steel plate and welding steel plate under multiple Underwater Explosions

  • ZHANG Fei1,2,3, ZHANG Chunhui1, ZHANG Lei1, WANG Zhijun1, LI Xudong1,2
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文章历史 +

摘要

为了研究舰船结构在多次水下爆炸载荷作用下的抗爆抗冲击能力,基于水下爆炸鼓胀试验分别开展了5 mm、12 mm的船用A32背空钢板及焊接板的多次水下爆炸试验,得到了钢板与焊接板的塑性变形历程,测量并计算了钢板与焊接板受冲击区域沿半径各点处的挠度及厚度减薄率,分析了钢板与焊接板的塑性变形规律。结果表明:多次水下爆炸载荷作用下,焊接板与钢板的塑性变形形貌呈类球冠形,二者的厚度减薄率从中心位置到边界处呈先减小再增大的趋势,但焊接板的挠度小于钢板的挠度。A32钢板的变形模式主要为弯曲和拉伸变形,焊接板以弯曲变形为主。持续增加的水下爆炸载荷导致钢板中心位置与边界处拉伸断裂,而焊接板的焊缝及其热影响区发生脆性断裂。

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.

关键词

水下爆炸 / 固支圆板 / 焊接板 / 塑性变形 / 破坏模式

Key words

underwater explosion; clamped circular plate; welding plate; plastic deformation; failure  / mode

引用本文

导出引用
张斐1,2,3,张春辉1,张磊1,王志军2,李旭东1,2. 多次水下爆炸作用下钢板与焊接钢板冲击损伤特性[J]. 振动与冲击, 2020, 39(7): 196-201
ZHANG Fei1,2,3, ZHANG Chunhui1, ZHANG Lei1, WANG Zhijun1, LI Xudong1,2. Impact damage of steel plate and welding steel plate under multiple Underwater Explosions[J]. Journal of Vibration and Shock, 2020, 39(7): 196-201

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