Mechanical and damping property evaluation of jute fiber reinforced composite periodic core sandwich panels

ABSTRACT

The present article investigates the dynamic characteristics of jute fiber-reinforced sandwich composite panels with periodic cores. The sandwich panel contains the jute fibers-reinforced polymer (JFRP) composites as face layers and the silicone rubber as the core layer. The tensile and flexural properties of JFRP composite material were examined using ASTM D3039 and ASTM D7264 standards. The finite element model was developed to obtain the dynamic properties of the composite sandwich panel with conventional and periodic cores. Furthermore, the influence of end condition, core to face layer thickness ratio, and face layer to core thickness ratio on the dynamic properties of the sandwich panels are presented. The numerical results indicate that the periodic core composite sandwich panel greatly influences the structural stiffness compared with a conventional composite sandwich panel.

摘要

本文研究了具有周期芯的黄麻纤维增强夹层复合材料板的动力特性. 夹芯板包含黄麻纤维增强聚合物 (JFRP) 复合材料作为面层和硅橡胶作为芯层. 采用ASTM D3039和ASTM D7264标准对JFRP复合材料的拉伸和弯曲性能进行了检测. 建立了有限元模型, 对常规芯材和周期芯材复合材料夹芯板的动力特性进行了分析. 此外, 还研究了端部条件、芯面层厚度比和芯面层厚度比对夹层板动力性能的影响. 数值计算结果表明, 与传统的复合材料夹层板相比,周期芯复合材料夹层板对结构刚度的影响很大.

KEYWORDS:

• Jute fiber
• mechanical testing
• sandwich panel
• periodic core
• finite element analysis

关键词:

• 黄麻纤维
• 机械测试
• 夹芯板
• 周期核
• 有限元分析

Highlights

• Dynamic analysis of a periodic core sandwich panel with jute fiber-reinforced composite face sheets is carried out.

• The tensile and flexural properties of JFRP composite material was examined using ASTM D3039 and ASTM D7264 standards.

• Jute fiber-reinforced composite sandwich plate is modeled using finite element (FE) method.

• FE model was developed to obtain the natural frequencies and loss factors of the single-core and periodic-core sandwich panels under different end conditions.

• Effects of end condition, core to face layer thickness ratio and face layer to core thickness ratio on the dynamic properties of the jute fiber-reinforced composite periodic-core sandwich panel are presented.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This study is funded by the National Natural Science Foundation of China (NSFC) Grant no: 51373048.