期刊
APPLIED COMPOSITE MATERIALS
卷 20, 期 5, 页码 773-787出版社
SPRINGER
DOI: 10.1007/s10443-012-9301-8
关键词
Composite structures; Crashworthiness; Energy absorption; Crush test method; Composites failure modes; Dynamic crushing response
The paper describes quasi-static and dynamic tests to characterise the energy absorption properties of polymer composite crash energy absorbing segment elements under axial loads. Detailed computer tomography scans of failed specimens are used to identify local compression crush failure mechanisms at the crush front. The varied crushing morphology between the compression strain rates identified in this paper is observed to be due to the differences in the response modes and mechanical properties of the strain dependent epoxy matrix. The importance of understanding the role of strain rate effects in composite crash energy absorbing structures is highlighted in this paper.
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