期刊
COMPOSITE STRUCTURES
卷 198, 期 -, 页码 144-155出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2018.05.007
关键词
Low-velocity impact; Barely visible impact damage; Composite bicycle frame; Residual strength; Residual stiffness
资金
- Natural Sciences and Engineering Research Council of Canada (NSERC)
This study evaluates, by experiment and numerical analysis, the effects of a pebble thrown from the front wheel and hitting the down tube of a carbon-epoxy bicycle frame (the Guru Cycles Photon R). The performance of the down tube is based on the retention of its mechanical properties when performing a load test before and after an impact event. The results show that the down tube experiences a 4-5% loss of rigidity after an impact of 1.5-6 J. A parametric analysis of the effects of fibre orientation established a down tube stacking sequence that would increase its rigidity by 5.6%. With this new configuration, the effects of an impact on the tube was reduced and its residual rigidity after 1.5-6 J impacts increased by 1.5-2%.
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