Indexed by:会议论文
Date of Publication:2017-10-01
Page Number:1
Key Words:复合材料泡沫夹层板;数值模拟;低速冲击;冲击后压缩;剩余强度
Abstract:本文对低速冲击后结构的表面变形和能量吸收以及冲击后压缩结构的承载能力进行了数值模拟和实验研究。首先采用有限元方法对复合材料泡沫夹层板的冲击过程进行数值模拟,通过Hashin准则判断夹层结构面板的破坏情况,模拟结果表明:泡沫夹层板在受冲击过程中主要发生的是外面板基体拉伸破坏,冲击的能量越大,外面板发生破坏的面积越大。此外,对内外面板和泡沫的能量吸收做了对比,发现泡沫吸收了大量的能量,剩余的能量基本上被外面板吸收。其次,用带有冲击损伤和完好无损的模型分别进行轴向压缩计算,记录结构的失效载荷和破坏情况,分析冲击能量对压缩后剩余强度的影响,得到带有冲击损伤结构的承载能力大大下降。
Professor
Supervisor of Doctorate Candidates
Supervisor of Master's Candidates
Gender:Male
Alma Mater:Dalian University of Technology (DUT)
Degree:Doctoral Degree
School/Department:State Key Laboratory of Industrial Equipment for Structral Analysis, Department of Engineering Mechanics
Discipline:Solid Mechanics. Applied and Experimental Mechanics. Engineering Mechanics. Mechanical Manufacture and Automation. Vehicle Engineering. Aerospace Mechanics and Engineering. mechanics of manufacturing process
Business Address:Room 321, Department of Engineering Mechanics
Contact Information:Tel.: 86 0411-84708406 Email: leizk@dlut.edu.cn
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