Accession Number : ADA305481

Title :   Finite Element Computer Program to Analyze Cracked Orthotropic Sheets.

Descriptive Note : Contract rept.,

Corporate Author : LOCKHEED AIRCRAFT CORP MARIETTA GA

Personal Author(s) : Chu, C. S. ; Anderson, J. M. ; Batdorf, W. J. ; Aberson, J. A.

PDF Url : ADA305481

Report Date : JUL 1976

Pagination or Media Count : 90

Abstract : A finite-element computer program was developed to analyze a two-dimensional orthotropic sheet with through-the-thickness cracks and temperature gradient. The program includes special crack-tip elements that account for the singular stress fields associated with crack opening (Mode I) and crack sliding (Mode II) displacements at the crack tip. The program also includes a linear spring element and a constant-strain, triangular element. A number of problems for which closed-form solutions exist were analyzed to demonstrate the capabilities of the program. (MM)

Descriptors :   *FINITE ELEMENT ANALYSIS, *CRACKING(FRACTURING), COMPUTER PROGRAMS, THICKNESS, STRESS ANALYSIS, STIFFNESS, DISPLACEMENT, ELASTIC PROPERTIES, MODULUS OF ELASTICITY, FRACTURE(MECHANICS), TEMPERATURE GRADIENTS, SHEETS, ELONGATION, SPRINGS, POISSON RATIO.

Subject Categories : Numerical Mathematics
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE