Sandwich structure of locally compact honeycomb core

• Main Authors: SHI SHANSHAN, ZHANG JIASEN, LYU HANGYU, CHENG GONG, CHEN BINGZHI, SUN ZHI
• Format: Patent
• Language: Chinese; English
• Published: 15.04.2022
• Subjects: LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; PERFORMING OPERATIONS; TRANSPORTING

The invention provides a sandwich structure of a locally compact honeycomb core, and the core structure of the sandwich board is locally compact on the basis of a common uniform honeycomb structure. The local compact structure in the honeycomb core destroys the uniformity of the core, changes the load transfer path of the sandwich panel structure under the action of compression load, reduces the stress concentration in the structure, increases the surface-core bonding area, and improves the energy absorption of the structure. The test result shows that the carbon fiber sandwich structure of the local compact honeycomb core can generate a synergistic damage effect, and the specific energy absorption of the structure is remarkably improved under the condition that the peak load variation amplitude of the sandwich plate structure is small. 本发明提供了一种局部致密蜂窝芯体的夹芯结构，该夹芯板的芯体结构是在普通均匀蜂窝结构基础上，进行局部致密处理。蜂窝芯体中局部致密结构的存在破坏了芯体的均匀性，改变了压缩载荷作用下夹芯板结构的载荷传递路径，降低结构中存在的应力集中，并且增加了面芯粘接面积，提升结构的能量吸收。试验结果显示，该局部致密蜂窝芯体的碳纤维夹芯结构能够使得结构产生协同破坏效应，