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Indexed by:会议论文

Date of Publication:2017-08-20

Volume:2017-August

Abstract:As one kind of light-weight, high-mechanical-performance composite material, sandwich structure has built solid foundation on its practical application of engineering fields. However, traditional design methods and most relevant structural optimization methods always design sandwich structures considering single constraint, such as constraint of material volume or nodal displacement. Sandwich structures in modern engineering are in highly complex circumstances where strict mechanical, thermal, electromagnetic and functional requirements may be put forward. In this paper, a multi-constraint topology optimization method for sandwich structure with CFRP (Carbon Fibre Reinforced Polymer) face sheets is proposed. The metal core of sandwich structure is optimized based on a ground structure under structural stability constraint, adhesive-area constraint and embedding-volume constraint. In numerical examples, the single-constraint case and the multi-constraint case are both considered, and the results indicate that different conditions of constraints have remarkable influence on the topology of cores of sandwich structure. Sandwich structures with grid core and hybrid core (hybrid of grid core and honeycomb core) can be obtained through topology optimization in single-and multi-constraint cases, respectively. © 2017 International Committee on Composite Materials. All rights reserved.