爆炸冲击损伤会对舰船航行和作战造成严重影响，而爆炸后的剩余强度研究对于评估舰船损伤后的生命力具有重要意义。本文以U型折叠式夹层板为研究对象，对水下爆炸冲击损伤后的U型夹层板开展弯曲实验，研究弯曲载荷作用下夹层板在纵、横2个方向的极限承载力和损伤变形模式。根据实验应用有限元软件Abaqus开展数值仿真分析，并把实验和仿真结果进行对比，以验证和完善有限元仿真分析技术，为分析基于夹层板的舰船结构强度提供技术支撑。
The impact damage caused by explosion will have a serious impact on the ship's navigation and operation. Also the study of the residual strength after the explosion is of great significance for the assessment of the ship's life after the damage. In this paper, U-type folding sandwich panel is used as the object of study, and the U-type sandwich plate after underwater explosion shock impact in bending test is carried out, the ultimate strength and damage deformation modes of the sandwich plate in both longitudinal and transverse directions under bending load are obtained. Then, the numerical simulation analysis is carried out with the ABAQUS software, and the experimental and simulation results are compared to verify and improve the finite element simulation analysis technology to provide technical support for the analysis of the strength of ship based on the sandwich plates.
2018,40(9): 39-42,67 收稿日期：2018-01-03
DOI：10.3404/j.issn.1672-7649.2018.09.007
分类号：U661.4;O344
基金项目：国家自然科学基金资助项目（51609110）
作者简介：王哲(1992-),男,硕士研究生,主要从事船舶与海洋工程结构强度研究
参考文献：
[1] METSCHKOW B. Sandwich panels in shipbuilding[J]. Polish Maritime Research, 2006
[2] KOZAK J. Selected problems on application of steel sandwich panels to marine structures[J]. Polish Maritime Research, 2009, 16(4):9-15
[3] REIS E M, RIZKALLA S H. Material characteristics of 3-D FRP sandwich panels[J]. Construction & Building Materials, 2008, 22(6):1009-1018
[4] 张延昌. 水下爆炸冲击载荷下折叠式夹层板防护性能研究[D].上海:上海交通大学, 2012.
[5] ZHANG Y C, ZHANG S L, WANG Z L, et al. Quasi-static compressive behavior of U-type corrugated cores sandwich panels[J]. Journal of Ship Mechanics, 2012, 16(12):1417-1426
[6] 胡杰, 刘昆, 杜训柏, 等. U型激光焊接夹层板极限强度试验研究[J]. 舰船科学技术, 2016, 38(12):53-58
[7] 谭年富, 陈秀华, 法洋洋, 等. 泡沫夹层复合材料的低速冲击损伤及剩余强度的数值模拟[J]. 机械工程材料, 2012, 36(8):89-94
[8] 佟安时, 谢里阳, 刘建中, 等. 含孔型缺口的纤维金属层板剩余强度[J]. 东北大学学报:自然科学版, 2017, 38(3):375-378
[9] 王自力, 张延昌, 顾金兰. 基于夹层板抗水下爆炸舰船底部结构设计[J]. 舰船科学技术, 2010, 32(1):22-27
[10] 王自力, 胡宗文, 张延昌, 等. 折叠式夹层板水下爆炸试验研究[J]. 中国造船, 2014(3):74-83
[11] 姚熊亮, 侯明亮, 李青, 等. Y型舷侧结构抗冲击性能数值仿真实验研究[J]. 哈尔滨工程大学学报, 2006, 27(6):796-801
[12] 张延昌, 王果, 周红, 等. 折叠式夹层板水下爆炸防护性能数值仿真分析[J]. 中国造船, 2013(2):35-44
[13] 张延昌, 周红, 王果, 等. U型折叠式夹层板防护性能数值仿真分析[J]. 船舶力学, 2013(10):1191-1201
