材料科学与工程学报2017，Vol.35Issue(6)：871-876,920,7.DOI:10.14136/j.cnki.issn 1673-2812.2017.06.003
碳纤维复合材料假脚工艺参数对其冲击后疲劳性能的影响
Influence of Processing Parameters of Carbon Fiber Composites Prosthetic Foot on Fatigue Property after Impact
摘要
Abstract
Impact damage and fatigue damage after the impact of carbon fiber composites prosthetic foot were analyzed based on the 3D progressive damage theory and finite element method.The influence of composite systems,dimensions and stacking sequences on the impact damage and fatigue property were researched.The results show that the main damage modes of carbon fiber composites prosthetic foot under the impact loading are matrix cracking,fiber crushing and delamination.As the transverse tensile strength decreases,the normal tensile strength and shearing strength and the impact damage area of the composite materials gradually increases,and the fatigue life cycle decreases.With the increase of the thickness of back kneel,matrix cracking gradually increases,delamination decreases slightly and fiber crushing has little change.Although fatigue life cycle increases with increasing thickness of back kneel,the increment of fatigue life cycle is lower than that of the thickness.The stacking sequences have little effect on the impact damage modes of carbon fiber composites prosthetic foot.Increasing the number of 0° layer can improve the fatigue properties of carbon fiber composites prosthetic foot.关键词
假脚/工艺参数/冲击损伤/疲劳寿命/碳纤维复合材料Key words
prosthetic foot/processing parameter/impact damage/fatigue life/carbon fiber composites分类
通用工业技术引用本文复制引用
崔海坡,王双情,张阿龙..碳纤维复合材料假脚工艺参数对其冲击后疲劳性能的影响[J].材料科学与工程学报,2017,35(6):871-876,920,7.基金项目
国家自然科学基金资助项目(51305268),上海工程技术研究中心资助项目(15DZ2251700) （51305268）
