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Probabilistic simulation of stress concentration in composite laminates
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Liaw, D. G. Murthy, P. L. N. Chamis, C. C. |
| Copyright Year | 1994 |
| Description | A computational methodology is described to probabilistically simulate the stress concentration factors (SCF's) in composite laminates. This new approach consists of coupling probabilistic composite mechanics with probabilistic finite element structural analysis. The composite mechanics is used to probabilistically describe all the uncertainties inherent in composite material properties, whereas the finite element is used to probabilistically describe the uncertainties associated with methods to experimentally evaluate SCF's, such as loads, geometry, and supports. The effectiveness of the methodology is demonstrated by using is to simulate the SCF's in three different composite laminates. Simulated results match experimental data for probability density and for cumulative distribution functions. The sensitivity factors indicate that the SCF's are influenced by local stiffness variables, by load eccentricities, and by initial stress fields. |
| File Size | 827685 |
| Page Count | 22 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19950010855 |
| Archival Resource Key | ark:/13960/t26b22k4s |
| Language | English |
| Publisher Date | 1994-12-01 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Finite Element Method Stress Concentration Composite Materials Stress Distribution Simulation Probability Theory Stiffness Density Distribution Laminates Thermal Stresses Distribution Functions 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 |
