新型变截面波纹夹层结构抗爆炸冲击性能
李响1,2,李锐2,徐兴兴2,李林3
(1.三峡大学 水电机械设备设计与维护湖北省重点实验室,湖北 宜昌 443002;2.三峡大学 机械与动力学院,湖北 宜昌 443002;3.湖北力帝机床股份有限公司,湖北 宜昌 443002)
摘要:为了提升夹层结构的抗爆炸冲击性能,创新构型了一种变截面波纹夹层结构,该新型夹层结构上面板为平板,下面板呈V形变化。利用理论分析与数值模拟方法研究了下面板夹角和波纹夹芯放置方式对该夹层结构抗爆炸冲击能力的影响。经研究发现,与传统波纹夹层结构相比,该新型变截面波纹夹层结构具有更优越的抗爆炸冲击性能,并且其各项性能会随V型角的减小而不断提升,将波纹夹芯纵向放置时有利于减小夹层结构的整体变形,横向放置则会具有更好的吸能缓冲特性。本文研究内容有望为进一步提升波纹夹层结构抗爆炸冲击性能提供依据和参考。
关键词:变截面波纹夹层结构;抗爆炸冲击性能;下面板夹角;夹芯放置方式;数值模拟
中图分类号:TB333 文献标志码:A doi:10.3969/j.issn.1006-0316.2020.10.002
文章编号:1006-0316 (2020) 10-0006-10
Research on the Anti-Blast Performance of a New Kind of Variable Cross-Section Corrugated Sandwich Structure
LI Xiang1,2,LI Rui2,XU Xingxing2,LI Lin3
( 1.Hubei Key Laboratory of Hydroelectric Machinery Design & Maintenance, China Three Gorges University, Yichang 443002, China; 2.College of Mechanical and Power Engineering, China Three Gorges University, Yichang 443002, China; 3.Hubei Lidi Machine Tool Co., Ltd., Yichang 443002, China )
Abstract:In order to improve the sandwich structure’s anti-blast performance, a variable-section corrugated sandwich structure was proposed in this paper. The top panel of this new corrugated sandwich structure is flat, but the bottom panel is in V-shape change. The influence of bottom panel angle and core placement to this sandwich structure’s anti-blast performance were studied in both theory and finite element simulation. It is found that the new variable cross-section corrugated sandwich structure has superior anti-blast performance to traditional corrugated sandwich structure, and its anti-blast performance will continuously increase with the decrease of the V-shape angle. Longitudinal core placement will help to reduce the overall deformation of the sandwich structure, and lateral placement have better energy absorption capacity. This study is expected to provide basis and reference for improving the corrugated sandwich structure’s anti-blast performance.
Key words:variable-section corrugated sandwich structure;anti-blast performance;bottom panel angle;core placement;finite element simulation
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收稿日期:2020-04-29
基金项目:国家自然科学基金青年科学基金项目(51305232);湖北省教育厅科学技术研究计划重点项目(D20181206);三峡大学研究生课程建设项目(SDKC201906);三峡大学硕士学位论文培优基金(2020SSPY034)
作者简介:李响(1979-),男,湖北黄梅人,博士,副教授、硕士生导师,主要研究方向为轻量化技术、结构优化设计、数值模拟技术、结构强度与可靠性,E-mail:lixiangcfy@ctgu.edu.cn。
 

 

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