Analysis of the Interlaminar Fracture Toughness of Composite Cylindrical Shells
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.
Composite materialInterlaminar strengthFracture toughnessDouble cantilever beam testThree-point end-notched flexure test
NETL
NSTL
万方数据
