工艺与制造英文2021被引 3
碳纤维增强聚合物复合材料梁裂纹深度和纤维铺层角对振动特性影响的有限元分析
ÇATLAK DERİNLİĞİNİN VE FİBER AÇISININ KARBON FİBER TAKVİYELİ POLİMER KOMPOZİT KİRİŞİN TİTREŞİM DAVRANIŞINA ETKİSİNİN SONLU ELEMANLAR ANALİZİ YÖNTEMİ İLE BELİRLENMESİ
Berkay ERGENE · PAMUKKALE UNIVERSITY
摘要整理
本研究采用Ansys APDL有限元分析软件,系统研究了50%碳纤维增强聚合物(CFRP)复合材料梁中裂纹的存在及其深度(1、2、3、4、5 mm)对梁振动特性的影响。建立了无裂纹和有裂纹CFRP复合材料梁的有限元模型,采用复合材料混合律确定材料性能参数。试验梁尺寸为:长200 mm、宽20 mm、厚3 mm(由6层0.5 mm厚的单层板组成),左端固定支撑,右端自由。通过改变纤维铺层角(0°、15°、30°、45°、60°、75°、90°),研究了纤维铺层角对有裂纹和无裂纹梁固有频率的影响。研究结果表明:纤维铺层角和裂纹深度均能改变CFRP复合材料梁的固有频率,变化范围为10%~20%;相比裂纹深度,纤维铺层角对固有频率的影响更为显著。该研究为CFRP复合材料结构的损伤评估和健康监测提供了重要的数值参考。
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