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Crack-opening displacements in center-crack, compact, and crack-line wedge-loaded specimens. [of flat plates
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Newman Jr., J. C. |
| Copyright Year | 1976 |
| Description | The theoretical crack-opening displacements for center-crack, compact, and crack-line wedge-loaded specimens (reported in the ASTM Proposed Recommended Practice for R-Curve Determination (1974)) disagree with experimental measurements in the literature. The disagreement is a result of using approximate specimen configurations and load representation to obtain the theoretical displacements. An improved method of boundary collocation is presented which was used to obtain the theoretical displacements in these three specimen types; the actual specimen configurations and more accurate load representation were used. In the analysis of crack-opening displacements in the compact and crack-line wedge-loaded specimens, the effects of the pin-loaded holes were also included. The theoretical calculations agree with the experimental measurements reported in the literature. Also examined are accurate polynomial expressions for crack-opening displacements in both compact and crack-line wedge-loaded specimens. |
| File Size | 809194 |
| Page Count | 36 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19760019496 |
| Archival Resource Key | ark:/13960/t83j87x2f |
| Language | English |
| Publisher Date | 1976-07-01 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Crack Opening Displacement Stress Analysis Approximation Flat Plates Cracking Fracturing Mathematical Models Wedges Loads Forces 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 |
