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Crashworthiness of foam filled truncated conical sandwich shells with corrugated cores
Abstract Polymeric foam filled truncated metallic conical sandwich shells with corrugated cores were proposed, and their energy absorption characteristics under axial compression were systematically investigated. The types of foam filling include: (i) foam filling inner cavity (FFIC), (ii) foam filling corrugated channel (FFCC), and (iii) foam filling inner cavity and corrugated channel (FFICCC). Test specimens were fabricated by combining the step-by-step molding method with the method of in-situ foam filling. Firstly, the crashworthiness of FFIC, FFCC and FFICCC subjected to axial compression was experimentally characterized. Secondly, numerical simulations with the method of finite elements (FE) were performed, with good agreement achieved between measurements and simulations. Subsequently, based upon the validated FE models, interaction mechanisms between foam filler and metallic shell were explored, and the influences of wall thickness, semi-apical angle and loading speed on energy absorption were quantified. The three different foam filled structures were found to exhibit higher energy absorption than their unfilled counterpart. Particularly, the specific energy absorption (SEA) of the FFCC was higher than that of the unfilled structure, attributed mainly to the participation of all foam fillers in the interaction with metal shells that was rarely found in other types of foam-filled structure.
Graphical abstract Display Omitted
Highlights Novel foam filled truncated metallic conical sandwich shells with corrugated cores were proposed. Energy absorption of foam-filled structures was superior to their unfilled counterpart. Quasi-static axial compressive behaviors including deformation mechanisms and interaction effect were systematically studied.
Crashworthiness of foam filled truncated conical sandwich shells with corrugated cores
Abstract Polymeric foam filled truncated metallic conical sandwich shells with corrugated cores were proposed, and their energy absorption characteristics under axial compression were systematically investigated. The types of foam filling include: (i) foam filling inner cavity (FFIC), (ii) foam filling corrugated channel (FFCC), and (iii) foam filling inner cavity and corrugated channel (FFICCC). Test specimens were fabricated by combining the step-by-step molding method with the method of in-situ foam filling. Firstly, the crashworthiness of FFIC, FFCC and FFICCC subjected to axial compression was experimentally characterized. Secondly, numerical simulations with the method of finite elements (FE) were performed, with good agreement achieved between measurements and simulations. Subsequently, based upon the validated FE models, interaction mechanisms between foam filler and metallic shell were explored, and the influences of wall thickness, semi-apical angle and loading speed on energy absorption were quantified. The three different foam filled structures were found to exhibit higher energy absorption than their unfilled counterpart. Particularly, the specific energy absorption (SEA) of the FFCC was higher than that of the unfilled structure, attributed mainly to the participation of all foam fillers in the interaction with metal shells that was rarely found in other types of foam-filled structure.
Graphical abstract Display Omitted
Highlights Novel foam filled truncated metallic conical sandwich shells with corrugated cores were proposed. Energy absorption of foam-filled structures was superior to their unfilled counterpart. Quasi-static axial compressive behaviors including deformation mechanisms and interaction effect were systematically studied.
Crashworthiness of foam filled truncated conical sandwich shells with corrugated cores
Yang, Mao (author) / Han, Bin (author) / Mao, Yongjian (author) / Zhang, Jun (author) / Lu, Tian Jian (author)
Thin-Walled Structures ; 179
2022-06-19
Article (Journal)
Electronic Resource
English
Three-point bending of sandwich beams with aluminum foam-filled corrugated cores
| British Library Online Contents | 2014
| British Library Online Contents | 2015