PVC泡沫夹芯板单点低速冲击动态响应与冲击后剩余抗压强度试验研究
Experimental study on dynamic response and residual compressive strength of composite sandwich panel with PVC foam core under single-point low-velocity impact
陈翀一 1程勇军 2蔡伟 1印卓 3胡海晓 4王静南 3余彧3
作者信息
- 1. 武汉理工大学 材料复合新技术国家重点实验室,湖北 武汉 430070
- 2. 武汉船舶通信研究所,湖北 武汉 430205
- 3. 武汉海威船舶与海洋工程科技有限公司,湖北 武汉 430200
- 4. 武汉理工大学 新材料力学理论与应用湖北省重点实验室,湖北 武汉 430070
- 折叠
摘要
[目的]为了研究复合材料夹芯板抗冲击力学性能,选取尺寸为150 mm×100 mm×26 mm的正交编织玻纤复合材料PVC泡沫夹芯板为研究对象,研究其单点低速冲击动态响应与冲击后的剩余压缩强度.[方法]开展一系列不同冲击能量下夹芯板落锤冲击试验,研究夹芯板在不同冲击能量下的失效模式、冲击力-位移响应和能量吸收特性.随后开展含冲击损伤的夹芯板试样准静态压缩试验,分析含冲击损伤的复合夹芯板的最大压缩承载能力和剩余压缩强度.[结果]研究结果发现,不同冲击能量下夹芯板失效模式和冲击力-位移特性有明显的区别,芯层主要通过压缩变形来吸收冲击能量.随着冲击能量增大,复合材料夹芯板的最大冲击力、凹坑深度和结构吸收能量都随之增大,夹芯板结构的最大压缩承载能力和剩余压缩强度在逐渐降低,夹芯结构受冲击面板的损伤程度决定了夹芯板的剩余压缩强度.[结论]研究工作可为舰船结构抗冲击设计提供参考.
Abstract
[Objectives]In this paper,an orthogonal braided glass fiber composite sandwich panel with a PVC foam core and dimensions of 150 mm×100 mm×26 mm is selected as the research object in order to study the impact mechanical properties of composite sandwich panels.The dynamic response and residual compressive strength of the panel under single-point low-velocity impact are then analyzed.[Methods]First,a series of drop hammer impact tests are conducted to study the failure mode,impact force-displacement re-sponse and energy absorption characteristics of the panel under different impact energies.Next,quasi-static compression experiments are conducted to investigate the maximum compression load capacity and residual compressive strength under impact damage.[Results]There are significant differences in the failure modes and impact force-displacement characteristics of the sandwich panel under different impact energies.The core mainly absorbs impact energy through compression deformation.As the impact energy increases,the maximal impact force,dent depth and absorbed energy of panel gradually increase,while the maximum compression load capacity and residual strength decrease after impact.The damage degree of the impacted composite sand-wich panel determines its residual compressive strength.[Conclusion]The findings of this study can provide valuable references for the impact resistance design of naval ship structures.
关键词
复合材料夹芯板/冲击/失效模式/压缩/剩余强度Key words
composite sandwich panels/impact/failure mode/compression/residual strength引用本文复制引用
基金项目
中央高校基本科研业务费专项(2022IVA175)
出版年
2024
国家科技期刊平台
NSTL
万方数据