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Progressive fracture of polymer matrix composite structures: a new approach
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Murthy, P. L. N. Minnetyan, L. Chamis, C. C. |
| Copyright Year | 1992 |
| Description | A new approach independent of stress intensity factors and fracture toughness parameters has been developed and is described for the computational simulation of progressive fracture of polymer matrix composite structures. The damage stages are quantified based on physics via composite mechanics while the degradation of the structural behavior is quantified via the finite element method. The approach account for all types of composite behavior, structures, load conditions, and fracture processes starting from damage initiation, to unstable propagation and to global structural collapse. Results of structural fracture in composite beams, panels, plates, and shells are presented to demonstrate the effectiveness and versatility of this new approach. Parameters and guidelines are identified which can be used as criteria for structural fracture, inspection intervals, and retirement for cause. Generalization to structures made of monolithic metallic materials are outlined and lessons learned in undertaking the development of new approaches, in general, are summarized. |
| File Size | 1014129 |
| Page Count | 24 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19920013951 |
| Archival Resource Key | ark:/13960/t7zm08473 |
| Language | English |
| Publisher Date | 1992-01-01 |
| Access Restriction | Open |
| Subject Keyword | Composite Materials Polymer Matrix Composites Computerized Simulation Cumulative Damage Laminates Finite Element Method Stress Intensity Factors Delaminating Beams Supports Mathematical Models Composite Structures Fracture Strength Fracturing Crack Initiation Structural Analysis Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
