SwePub - search: id:"swepub:oai:DiVA.org:ltu-10...

Enumeration	Reference	Cover	Find
1.	Singh, Chandra Veer, et al. (author) Evolution of ply cracks in multidirectional composite laminates 2010 In: International Journal of Solids and Structures. - : Elsevier BV. - 0020-7683 .- 1879-2146. ; 47:10, s. 1338-1349 Journal article (peer-reviewed)abstract 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.

Singh, Chandra Veer, et al. (author)
Evolution of ply cracks in multidirectional composite laminates
2010
In: International Journal of Solids and Structures. - : Elsevier BV. - 0020-7683 .- 1879-2146. ; 47:10, s. 1338-1349
Journal article (peer-reviewed)abstract
- 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.

Träfflista för sökning "id:"swepub:oai:DiVA.org:ltu-10146" "