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An approach to assess delamination propagation simulation capabilities in commercial finite element codes
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Krueger, Ronald |
| Copyright Year | 2008 |
| Description | An approach for assessing the delamination propagation simulation capabilities in commercial finite element codes is presented and demonstrated. For this investigation, the Double Cantilever Beam (DCB) specimen and the Single Leg Bending (SLB) specimen were chosen for full three-dimensional finite element simulations. First, benchmark results were created for both specimens. Second, starting from an initially straight front, the delamination was allowed to propagate. The load-displacement relationship and the total strain energy obtained from the propagation analysis results and the benchmark results were compared and good agreements could be achieved by selecting the appropriate input parameters. Selecting the appropriate input parameters, however, was not straightforward and often required an iterative procedure. Qualitatively, the delamination front computed for the DCB specimen did not take the shape of a curved front as expected. However, the analysis of the SLB specimen yielded a curved front as was expected from the distribution of the energy release rate and the failure index across the width of the specimen. Overall, the results are encouraging but further assessment on a structural level is required. |
| File Size | 8445553 |
| Page Count | 71 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20080015439 |
| Archival Resource Key | ark:/13960/t74v1kj9h |
| Language | English |
| Publisher Date | 2008-04-01 |
| Access Restriction | Open |
| Subject Keyword | Composite Materials Finite Element Method Fracture Mechanics Simulation Delaminating Bending Shapes Cantilever Beams Three Dimensional Models Failure Loads Forces 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 |
