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Novel composites for wing and fuselage applications (Document No: 19960012182)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Suarez, J. A. Sobel, L. H. Buttitta, C. |
| Copyright Year | 1995 |
| Description | Probabilistic predictions based on the IPACS code are presented for the material and structural response of unnotched and notched, IM6/3501-6 Gr/Ep laminates. Comparisons of predicted and measured modulus and strength distributions are given for unnotched unidirectional, cross-ply and quasi-isotropic laminates. The predicted modulus distributions were found to correlate well with the test results for all three unnotched laminates. Correlations of strength distributions for the unnotched laminates are judged good for the unidirectional laminate and fair for the cross-ply laminate, whereas the strength correlation for the quasi-isotropic laminate is judged poor because IPACS did not have a progressive failure capability at the time this work was performed. The report also presents probabilistic and structural reliability analysis predictions for the strain concentration factor (SCF) for an open-hole, quasi-isotropic laminate subjected to longitudinal tension. A special procedure was developed to adapt IPACS for the structural reliability analysis. The reliability results show the importance of identifying the most significant random variables upon which the SCF depends, and of having accurate scatter values for these variables. |
| File Size | 1242867 |
| Page Count | 40 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19960012182 |
| Archival Resource Key | ark:/13960/t5k98429g |
| Language | English |
| Publisher Date | 1995-12-01 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Wings Failure Analysis Aircraft Construction Materials Structural Reliability Reliability Analysis Graphite-epoxy Composites Fuselages Applications Programs Computers Ply Orientation Laminates Strain Rate 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 | Technical Report |
