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Simple formulas for strain-energy release rates with higher order and singular finite elements
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Raju, I. S. |
| Copyright Year | 1986 |
| Description | A general finite element procedure for obtaining strain-energy release rates for crack growth in isotropic materials is presented. The procedure is applicable to two-dimensional finite element analyses and uses the virtual crack-closure method. The procedure was applied to non-singular 4-noded (linear), 8-noded (parabolic), and 12-noded (cubic) elements and to quarter-point and cubic singularity elements. Simple formulas for strain-energy release rates were obtained with this procedure for both non-singular and singularity elements. The formulas were evaluated by applying them to two mode I and two mixed mode problems. Comparisons with results from the literature for these problems showed that the formulas give accurate strain-energy release rates. |
| File Size | 1594305 |
| Page Count | 61 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19870006057 |
| Archival Resource Key | ark:/13960/t6f23v40f |
| Language | English |
| Publisher Date | 1986-12-01 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Finite Element Method Isotropic Media Stress Intensity Factors Strain Energy Methods Singularity Mathematics Crack Closure Crack Propagation 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 |
