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A new local debonding model with application to the transverse tensile and creep behavior of continuously reinforced titanium composites
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Arnold, Steven M. Bednarcyk, Brett A. |
| Copyright Year | 2000 |
| Description | A new, widely applicable model for local interfacial debonding in composite materials is presented. Unlike its direct predecessors, the new model allows debonding to progress via unloading of interfacial stresses even as global loading of the composite continues. Previous debonding models employed for analysis of titanium matrix composites are surpassed by the accuracy, simplicity, and efficiency demonstrated by the new model. The new model was designed to operate seamlessly within NASA Glenn's Micromechanics Analysis Code with Generalized Method of Cells (MAC/GMC), which was employed to simulate the time- and rate-dependent (viscoplastic) transverse tensile and creep behavior of SiC/Ti composites. MAC/GMC's ability to simulate the transverse behavior of titanium matrix composites has been significantly improved by the new debonding model. Further, results indicate the need for a more accurate constitutive representation of the titanium matrix behavior in order to enable predictions of the composite transverse response, without resorting to recalibration of the debonding model parameters. |
| File Size | 2245391 |
| File Format | |
| Language | English |
| Publisher Date | 2000-08-01 |
| Access Restriction | Open |
| Subject Keyword | Composite Materials Deformation Debonding Materials Viscoplasticity Titanium Metal Matrix Composites Models Creep Analysis Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
