Evolution of ply cracks in multidirectional composite laminates

Singh, Chandra VeerDepartment of Aerospace Engineering, Texas A&M University (författare)

Upprättat; 2010; 20130124 (andbra)
This paper treats evolution of ply cracks in multidirectional composite laminates subjected to a quasi-static tensile load in the longitudinal direction. Starting with pre-existing ply cracks in off-axis plies, the formation of additional cracks is analyzed by an energy-based approach. A critical laminate energy parameter associated with formation of these cracks is defined and is evaluated using experimental data for a reference cross-ply laminate. The modeling approach requires crack surface displacements, which are calculated by a three-dimensional finite element (3-D FE) analysis performed on a suitable representative volume of the given cracked laminate. The model predictions agree well with experimental data for [0 / ± θ 4 / 0 1 / 2] s and [0 / 90 / ∓ 45] s laminates. A parametric study is conducted to evaluate effects of ply thickness and ply stacking sequence on damage evolution in [0 m / 90 n / ∓ θ p] s laminates.

Ingår i:International Journal of Solids and Structures: Elsevier BV47:10, s. 1338-13490020-76831879-2146

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.