陈翀一, 程勇军, 蔡伟, 等. 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[J]. 中国舰船研究, 2024, 19(4): 263–270. DOI: 10.19693/j.issn.1673-3185.03337
引用本文: 陈翀一, 程勇军, 蔡伟, 等. 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[J]. 中国舰船研究, 2024, 19(4): 263–270. DOI: 10.19693/j.issn.1673-3185.03337
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CHEN C Y, CHENG Y J, CAI W, et al. Experimental study on dynamic response and residual compressive strength of composite sandwich panel with PVC foam core under single-point low-velocity impact[J]. Chinese Journal of Ship Research, 2024, 19(4): 263–270 (in both Chinese and English). DOI: 10.19693/j.issn.1673-3185.03337
Citation: CHEN C Y, CHENG Y J, CAI W, et al. Experimental study on dynamic response and residual compressive strength of composite sandwich panel with PVC foam core under single-point low-velocity impact[J]. Chinese Journal of Ship Research, 2024, 19(4): 263–270 (in both Chinese and English). DOI: 10.19693/j.issn.1673-3185.03337
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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

    摘要
  • 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 response 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 sandwich 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.

     

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