Application of Foldcore Sandwich Structures in Helicopter Subfloor Energy Absorption Structure

2017 International Conference on Structural, Mechanical and Materials Engineering

材料科学;力学

Zhou, H.Z.^1 ; Wang, Z.J.^1

Key Lab. of Fundamental Science for National Defence-Advanced Design Technology of Flight Vehicles, Nanjing University of Aeronautics and Astronautics, 29 YuDao Street, Nanjing

210016, China^1

关键词: Buffering capacities;    Energy absorption structure;    Energy-absorbing capacity;    Helicopter subfloor;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/248/1/012033/pdf
DOI  :  10.1088/1757-899X/248/1/012033

来源: IOP

【 摘 要 】

The intersection element is an important part of the helicopter subfloor structure. The numerical simulation model of the intersection element is established and the crush simulation is conducted. The simulation results agree well with the experiment results. In order to improve the buffering capacity and energy-absorbing capacity, the intersection element is redesigned. The skin and the floor in the intersection element are replaced with foldcore sandwich structures. The new intersection element is studied using the same simulation method as the typical intersection element. The analysis result shows that foldcore can improve the buffering capacity and the energy-absorbing capacity, and reduce the structure mass.