Analytical study on the impact dynamic responses of foam-core sandwich plates by using membrane factor method

IF 5.1 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Impact Engineering Pub Date : 2024-12-02 DOI:10.1016/j.ijimpeng.2024.105199

Yinggang Li , Wen Xiao , Zeyuan Song , Yong Hu , Xiaobin Li

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引用次数: 0

Abstract

In this paper, a theoretical model is proposed to predict the dynamic responses of fully-clamped foam-core sandwich plates under impact loads of different shaped impactors by using membrane factor method based on the exact yield surface for sandwich section. The mode solutions and transient phase solutions of the impact force and structural deformation of sandwich plates are obtained. Numerical calculation and the bound solutions solved by using circumscribing and inscribing yield surface are carried out to validate the accuracy of the proposed theoretical model. Besides, the effect mechanism of membrane force and bending moment on the impact responses and plastic energy absorption are further analyzed. Results show that the proposed universal analytical model can reasonably predict the mode responses and transient phase responses of foam-core sandwich plates under impact of different shaped impactors. The membrane force plays a significant role in the dynamic response and the plastic deformation energy is mainly dissipated by membrane force in large structural deformations.

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来源期刊

International Journal of Impact Engineering 工程技术-工程：机械

CiteScore

8.70

自引率

13.70%

发文量

241

审稿时长

52 days

期刊介绍： The International Journal of Impact Engineering, established in 1983 publishes original research findings related to the response of structures, components and materials subjected to impact, blast and high-rate loading. Areas relevant to the journal encompass the following general topics and those associated with them: -Behaviour and failure of structures and materials under impact and blast loading -Systems for protection and absorption of impact and blast loading -Terminal ballistics -Dynamic behaviour and failure of materials including plasticity and fracture -Stress waves -Structural crashworthiness -High-rate mechanical and forming processes -Impact, blast and high-rate loading/measurement techniques and their applications