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Impact testing and simulation of composite airframe structures
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Annett, Martin S. Fasanella, Edwin L. Jackson, Karen E. Horta, Lucas G. Littell, Justin D. Seal II, Michael D. |
| Copyright Year | 2014 |
| Description | Dynamic tests were performed at NASA Langley Research Center on composite airframe structural components of increasing complexity to evaluate their energy absorption behavior when subjected to impact loading. A second objective was to assess the capabilities of predicting the dynamic response of composite airframe structures, including damage initiation and progression, using a state-of-the-art nonlinear, explicit transient dynamic finite element code, LS-DYNA. The test specimens were extracted from a previously tested composite prototype fuselage section developed and manufactured by Sikorsky Aircraft Corporation under the US Army's Survivable Affordable Repairable Airframe Program (SARAP). Laminate characterization testing was conducted in tension and compression. In addition, dynamic impact tests were performed on several components, including I-beams, T-sections, and cruciform sections. Finally, tests were conducted on two full-scale components including a subfloor section and a framed fuselage section. These tests included a modal vibration and longitudinal impact test of the subfloor section and a quasi-static, modal vibration, and vertical drop test of the framed fuselage section. Most of the test articles were manufactured of graphite unidirectional tape composite with a thermoplastic resin system. However, the framed fuselage section was constructed primarily of a plain weave graphite fabric material with a thermoset resin system. Test data were collected from instrumentation such as accelerometers and strain gages and from full-field photogrammetry. |
| File Size | 16967659 |
| Page Count | 156 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20140011934 |
| Archival Resource Key | ark:/13960/t56f0vb29 |
| Language | English |
| Publisher Date | 2014-02-01 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Aircraft Design, Testing And Performance Finite Element Method Dynamic Tests Simulation Aircraft Construction Materials Nonlinearity Mathematical Models Impact Tests Composite Structures Impact Loads Aircraft Structures Photogrammetry 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 |
