Analysis of Factors Affecting Crashworthiness of CFRP Thin-Walled Square Tubes Filled with Gradient Aluminum Foam
Source abstract
Abstract
Gradient aluminum foam as a filling material for CFRP thin-walled square tubes is a new energy-absorbing structure. In this paper, an axial quasi-static compression experiment and numerical simulation were carried out on CFRP thin-walled square tubes filled with gradient aluminum foam, the crushing process and failure modes of hollow and filled tubes under typical lay-up angles were analyzed, and the effects of lay-up mode, CFRP wall thickness and gradient aluminum foam filling on the crashworthiness of filled structures were investigated. The results showed that gradient aluminum foam can significantly improve the crashworthiness of CFRP thin-walled square tubes, and the crashworthiness of structures filled with positive gradient aluminum foam is better than that filled with negative gradient and single-density aluminum foam. In this paper, it is proved that the CFRP thin-walled square tube filled with gradient aluminum foam is an energy-absorbing structure with excellent crashworthiness, providing certain reference for the design of CFRP thin-walled structures filled with gradient aluminum foam.
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Research context
OpenAlex topics: Cellular and Composite Structures · Automotive and Human Injury Biomechanics · Transportation Safety and Impact Analysis
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References (24)
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