复合材料圆柱壳体的层间断裂韧性分析  

Analysis of the Interlaminar Fracture Toughness of Composite Cylindrical Shells

作　　者：贾力伟 李武胜 JIA Liwei;LI Wusheng(Research Institute of Physical and Chemical Engineering of Nuclear Industry,Tianjin,300180 China;Harbin Institute of Technology,Harbin,Heilongjiang Province,150006 China)

机构地区：[1]核工业理化工程研究院,天津300180 [2]哈尔滨工业大学,黑龙江哈尔滨150006

出　　处：《科技资讯》2024年第12期81-83,共3页Science & Technology Information

摘　　要：针对复合材料圆筒的层间性能分析,通过双悬臂梁试验(Double Cantilever Beam,DCB),得到了复合材料I型层间开裂与载荷对应关系,并根据GIC计算公式得到了材料I型断裂韧性。通过三点弯试验(EndNotched Flexure,ENF),计算了材料II型断裂韧性。建立了有限元模型,将I型断裂韧性、II型断裂韧性代入材料本构模型参数,对该结构层间性能设计与评估提出理论指导。The interlaminar performance of composite cylinders is analyzed.Through the Double Cantilever Beam(DCB)test,the correspondence between the Type I interlaminar cracking and load of the composite material is ob-tained,and its Type-I fracture toughness is obtained according to the G1C calculation formula.Through the three-point End-Notched Flexure(ENF)test,the Type-II fracture toughness of the material is calculated.A finite ele-ment model is established,and Type-I fracture toughness and Type-II fracture toughness are substituted into the constitutive model parameters of the material,which provides theoretical guidance for the design and evaluation of the interlaminar performance of the structure.

关 键 词：复合材料 层间强度 断裂韧性 双悬臂梁试验 三点弯曲试验 

分 类 号：TB33[一般工业技术—材料科学与工程]