Buckling, post-buckling and delamination propagation in debonded composite laminates Part 2: Numerical applications

2009 ◽  
Vol 88 (1) ◽  
pp. 131-146 ◽  
Author(s):  
S. Wang ◽  
Y. Zhang
Keyword(s):  
Composite Laminates ◽  
Post Buckling ◽  
Delamination Propagation

Buckling and Postbuckling Analyses of a Skew Plate

2008 ◽  
Vol 24 (4) ◽  
pp. 347-355 ◽  
Author(s):  
H. W. Liao ◽  
H. Y. Huang
Keyword(s):  
Composite Laminates ◽  
High Order ◽  
Design Parameters ◽  
Aerospace Structures ◽  
Critical Buckling Load ◽  
Buckling Strength ◽  
Skew Plate ◽  
Post Buckling ◽  
Polynomial Expansions ◽  
Important Design

AbstractThe applications of skew plates in the construction of aerospace structures are well known. The critical buckling load and post-buckling strength are two important design parameters of skew composite laminates. In this study, the refined buckling and nonlinear postbuckling solutions of a homogenous isotropic skew plate based on polynomial expansions of various degrees have been examined. Numerical results based on high-order Rayleigh-Ritz solutions are presented for certain type of oblique plates.

Behavior of Thin-Film-Type Delamination of Layered Composite in Post-Buckling

2013 ◽  
Vol 774-776 ◽  
pp. 1312-1321 ◽  
Author(s):  
Vitalijs Pavelko
Keyword(s):  
Compressive Force ◽  
Layered Composite ◽  
Stress And Strain ◽  
Elastic Plates ◽  
Post Buckling ◽  
Complete Elliptic Integrals ◽  
Analysis Of Stability ◽  
Delamination Propagation ◽  
State Stress ◽  
Buckled State

A revision of the basic assumptions those are usually used in the analysis of stability of thin delaminated layer and delamination propagation in a compressed composite is presented in this paper. For this purpose, the theory of flexible elastic plates with large displacements was used. As a result the compressive force and the total longitudinal strain of sub-laminate are expressed in terms of complete elliptic integrals, which uniquely identify the buckled shape of sub-laminate, the effect of buckling on the compression strain and increment of the compressive force in the buckled state. Stress and strain, as well as the strength of the buckled sub-laminate in the dangerous cross-section were also analyzed. The results of the general analysis of delamination propagation and its compression-bending destruction in the buckled state allow to define the basic regularities of the damage behavior of compressed layered composite.

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