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Study and Optimization of Helicopter Subfloor Energy Absorption Structure with Foldcore Sandwich Structures

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Affiliation of Author(s):航空学院
Journal:2017 4TH INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS, MECHANICS AND STRUCTURAL ENGINEERING (4TH AMMSE 2017)
Key Words:COMPONENTS
Abstract:The intersection element is an important part of the helicopter subfloor structure. In order to improve the crashworthiness properties, the floor and the skin of the intersection element are replaced with foldcore sandwich structures. Foldcore is a kind of high-energy absorption structure. Compared with original structure, the new intersection element shows better buffering capacity and energy-absorption capacity. To reduce structure's mass while maintaining the crashworthiness requirements satisfied, optimization of the intersection element geometric parameters is conducted. An optimization method using NSGA- II and Anisotropic Kriging is used. A significant CPU time saving can be obtained by replacing numerical model with Anisotropic Kriging surrogate model. The operation allows 17.15% reduce of the intersection element mass.
ISSN No.:1757-8981
Translation or Not:no
Date of Publication:2017-01-01
Co-author:Zhou HuaZhi
Correspondence Author:Wang Zhijin
Date of Publication:2017-01-01

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