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
贾力伟 1李武胜2
作者信息
- 1. 核工业理化工程研究院 天津 300180;哈尔滨工业大学 黑龙江哈尔滨 150006
- 2. 核工业理化工程研究院 天津 300180
- 折叠
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(End-Notched 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.
Abstract
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Key words
Composite material/Interlaminar strength/Fracture toughness/Double cantilever beam test/Three-point end-notched flexure test引用本文复制引用
出版年
2024
NETL
NSTL
万方数据