Impact characteristics analysis of a parachute-free airdrop box with a composite structure

作     者：Shi, Yongsheng Wang, Yinjiang 

作者机构：College of Aeronautical Engineering Civil Aviation University of China Tianjin 300300 China 

出 版 物：《Zhendong yu Chongji/Journal of Vibration and Shock》 (J Vib Shock)

年 卷 期：2024年第43卷第24期

页      面：323-331页

核心收录：

学科分类：1201[管理学-管理科学与工程(可授管理学、工学学位)] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 081402[工学-结构工程] 0804[工学-仪器科学与技术] 0814[工学-土木工程] 0811[工学-控制科学与工程] 0822[工学-轻工技术与工程] 

主　　题：Parachutes 

摘      要：To promote the development of parachute-free airdrop technology, the impact characteristics of a parachute-free airdrop box with a composite structure were studied, and the impact response and failure modes were analyzed. The protection mechanism of the parachute-free airdrop box was analyzed theoretically, which was simulated by finite element method. The Simulation results show that the goods with edge drop and angle drop have large displacement, serious box deformation and long impact duration;the impact energy absorption rate of the parachute-free airdrop box is more than 80%, and the efficient energy absorption provides a strong guarantee for goods safety;compared with edge drop and angle drop, the peak acceleration and average impact force of goods are larger for face drop;when the edge drop and the angle drop, the stress and strain level of the parachute-free airdrop box is higher than the face drop. The study shows that the safety of goods is related to the impact area and foam impact thickness, smaller impact area and larger foam thickness can reduce the risk of goods damage;the failure of the parachute-free airdrop box is related to their impact area. Larger impact area can effectively reduce the degree of impact failure and improve the safety of goods. © 2024 Chinese Vibration Engineering Society. All rights reserved.