Accession Number : ADA117674

Title :   Finite-Element Analysis of Some Full- and Partial-Ring Crack-Propagation Test Specimens.

Descriptive Note : Final rept. Jun 79-May 81,

Corporate Author : SYSTEMS RESEARCH LABS INC DAYTON OH RESEARCH APPLICATIONS DIV

Personal Author(s) : Ashbaugh,Noel E. ; Ahmad,Jalees

Report Date : MAR 1982

Pagination or Media Count : 63

Abstract : Ring-shaped specimens containing cracks are analyzed by a finite-element method. Results are obtained for the stress-intensity factor and the deformation or compliance of the specimen at locations which are convenient for experimental measurement. The specimens which are analyzed are the full-ring geometries under tensile and compressive loads having a single or double crack emanating from the inner radius, with the crack plane perpendicular to the load line for tensile loads and coinciding with the load line for compressive loads. A modified C-specimen and half rings under tensile loads having a single crack are analyzed. Results are obtained for various crack lengths and aspect ratios (inner radius divided by outer radius) equal to 0.5, 0.333, and 0.25. The results for the modified C-specimen are determined only for an aspect ratio of 0.5. Functional expressions are given for the stress-intensity factor and the compliance for the single-crack ring tension specimen and the modified C-specimen. (Author)

Descriptors :   *Cracking(Fracturing), *Rings(Mathematics), *Finite element analysis, Test methods, Stress strain relations, Intensity, Deformation, Aspect ratio, Fatigue tests(Mechanics), Pressure measurement, Tensile stress, Compressive properties, Loads(Forces), Radius(Measure)

Subject Categories : Theoretical Mathematics
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE