Large deflection of foam-filled Y-shape sandwich beams under lateral loading

Abstract

Under lateral load, this article aims to discuss the large deflection and yield criterion of Y-shape sandwich beams filled with foam. Considering the effect of metal foam strength, a yield criterion of Y-shape sandwich structure filled with foam is proposed. An analytical solution for large deflection of clamped foam-filled Y-shape sandwich beam under lateral load is derived using yield criterion, considering the interaction between stretching and bending due to large deflection. The corresponding numerical calculation of sandwich beams under lateral load is carried out. It is shown that the theoretical results are in good agreement with the calculated results. The effects of metal foam strength, face-sheet thickness and punch width on large deflection are studied in detail. The results show that the analytical model could predict the large deflection of foam-filled Y-shaped sandwich beam under lateral load really well.

Keywords:

• Sandwich beam
• Y-shape core
• metal foam
• yield criterion
• large deflection

Data availability statement

The authors attest that all data for this study are included in this article.

Disclosure statement

There are no conflicts of interest.

Additional information

Funding

The authors are grateful for their financial support through NSFC (12272290 and 11872291), Funding of Guangxi key laboratory of Automobile Components and Vehicle technology, Guangxi University of Science and Technology (2022GKLACVTKF01), Funding of State Key Laboratory of New Ceramic and Fine Processing Tsinghua University (No. KF202208), Fund of Key Laboratory of Advanced Materials of Ministry of Education, Foundation of State Key Laboratory of Automotive Simulation and Control (20210206).