ASSUMED STRESS HYBRID FINITE-ELEMENT METHOD FOR FRACTURE MECHANICS AND ELASTIC-PLASTIC ANALYSIS

The purpose of the report is to investigate the feasibility of the assumed stress hybrid finite element method on the analysis of linear fracture mechanics and the elastic-plastic analysis. The hybrid stress model is applied for the evaluation of the elastic stress intensity factors at the tip of a sharp crack. Example solutions include plane stress cracks of both the opening type and the inplane shear type for isotropic materials and of the opening type for anisotropic materials. Convergence of the numerical solution and the optimum arrangement of the finite element meshes have also been studied. The hybrid stress model is applied to the determination of the static response for structures with elastic-plastic material behavior. (Author Modified Abstract)

• Corporate Authors:

  Massachusetts Institute of Technology

  Aeroelastic and Structures Research Laboratory
  Cambridge, MA  United States  02139
• Authors:
  • Luk, C H
• Publication Date: 1972-12

Media Info

• Pagination: 249 p.

Subject/Index Terms

• TRT Terms: Cracking; Finite element method; Fracture mechanics; Stresses
• Uncontrolled Terms: Crack propagation; Stress intensity factors
• Old TRIS Terms: Crack stresses
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00044705
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: AFOSR-TR-73-0493
• Contract Numbers: F44620-72-C-0018
• Files: TRIS
• Created Date: Jul 31 1973 12:00AM