|Statement||prepared by E. Gail Guynn, Walter L. Bradley.|
|Series||NASA-CR -- 183179., NASA contractor report -- NASA CR-183179.|
|Contributions||Bradley, Walter L., United States. National Aeronautics and Space Administration.|
|The Physical Object|
Get this from a library! Micromechanics of composite laminate compression failures: an annual progress report. [Eunice Gail Guynn; Walter L Bradley; United States. National Aeronautics and Space Administration.]. A micromechanics-based constituent progressive damage model was proposed in this study to predict macroscopic failure behavior of composite laminates under multi-axial mechanical loadings as well. This book is one of the most authoritative books about micromechanics of composite. The book emphasizes on analytical approaches and covers various important topics relate to the subject. The first three chapters give the basic concepts and notations of anisotropic elasticity and heterogeneous material.5/5(4). The design of composite structures frequently includes discontinuities such as cut-outs and holes for joints, and they become critical regions under tensile or compressive loading. Failure in compression of fiber composite laminates with an open hole is by the initiation and growth of a microbuckle from the edge of the : C. Soutis.
The micromechanics of failure was developed to predict the failure of continuous fiber reinforced composites. 2. Progressive Failure Properties and Strength Prediction of Laminated Composite Structures 3. Localized Damage Models and Finite Element Analysis of Notched Composite Laminates Under Tension 4. Cohesive Models and Finite Element Analysis of Delaminated Composites Under Compression 5. In the present work a model for compression failure of fiber composite laminates is developed. This model is based on the assumption of fiber microbuckling similar to other models in the literature, but in addition includes the support offered by the plies in the overall laminate that are adjacent to the critical axial plies. Based on the composite micromechanics, a 2D numerical model is developed in present work to provide a deep insight into the mechanisms of the longitudinal compressive failure in UD-CFRP. In this model, the initial fiber misalignment, the interface crack, the matrix plastic yield and the fiber fracture were considered comprehensively.
Get this from a library! Micromechanics of compression failures in open hole composite laminates: a report. [E Gail Guynn; Walter L Bradley; Texas A & M University. Mechanics and Materials Center.; United States. National Aeronautics and Space Administration.]. Compression failures in laminates with holes are often preceded by the development of a damage zone which grows with increasing compressive load. This damage zone is due to local fiber buckling and/or shear crippling. The local softening in the damage zone has been modeled using a Dugdale-type approach. A micromechanics-based mesomodel for unidirectional laminates in compression up to failure Article (PDF Available) in Journal of Composite Materials 46(23) . The theory of micro-mechanics of failure aims to explain the failure of continuous fiber reinforced composites by micro-scale analysis of stresses within each constituent material, and of the stresses at the interfaces between those constituents, calculated from the macro stresses at the ply level. As a completely mechanics-based failure theory, the theory is expected to .