论文部分内容阅读
X-cor结构是一种采用拉挤复合材料细杆(Pin)以三维网架结构形式增强泡沫的新型夹层结构材料,该夹层结构与传统泡沫夹层结构和蜂窝夹层结构相比,具有很高的比强度和比刚度。为了研究Pin植入角、Pin直径对X-cor夹层结构压缩强度和压缩模量的影响,压缩性能试样采用Rohacell 31泡沫作为芯材,Pin采用0.5 mm和0.7 mm两种不同直径的T300/FW-63碳/环氧拉挤细杆,并将实验结果与不含Pin增强的泡沫夹层结构进行了对比。研究结果表明,Pin的存在极大提高了X-cor夹层结构的压缩强度、压缩模量,同时密度仅小幅度提升;Pin对X-cor夹层结构压缩性能的增强效率随Pin植入角的减小而提高,采用小直径的Pin更利于提高X-cor夹层结构压缩性能。
The X-cor structure is a new sandwich structure that uses a pultruded composite pin to reinforce the foam in the form of a three-dimensional grid structure that has a high Specific strength and specific stiffness. In order to study the effect of pin diameter and Pin diameter on the compressive strength and compressive modulus of X-cor sandwich structure, the compressive properties of the sample were determined by using Rohacell 31 foam as the core material and the Pin with two different diameters of 0.5 mm and 0.7 mm T300 / FW-63 carbon / epoxy pultruded thin rod, and the experimental results were compared with the foam sandwich structure without Pin reinforcement. The results show that the existence of Pin greatly enhances the compressive strength and compressive modulus of X-cor sandwich structure, while the density increases only slightly. The compression efficiency of Pin-X-cor sandwich structure increases with the reduction of Pin implant angle Small and increased, the use of small diameter Pin is more conducive to improve the X-cor sandwich structure compression performance.