Accession Number : ADA111758

Title :   A Study of Notch Fatigue. Part III. Plastic Stress Analysis of Notches.

Descriptive Note : Progress rept. Oct 80-Sep 81,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Lindsey,Gerald H

PDF Url : ADA111758

Report Date : Sep 1981

Pagination or Media Count : 60

Abstract : The stress and strain behavior at notch tips is analyzed with the view of using local values for fatigue calculations. A perfectly plastic, closed form solution is used as a starting point and basis of comparison for the finite element analysis. Maximum stress and strain values for 7075-T6 aluminum were obtained via finite elements and reflection photoelasticity in the plastic zone, and residual stress and strain values after unloading were obtained as well. A uniaxial model was used successfully to predict most of the behavior observed. (Author)

Descriptors :   *Notch toughness, *Fatigue(Mechanics), *Plastic properties, *Stress concentration, *Aluminum, *Finite element analysis, Photoelasticity, Residual stress, Stress strain relations, Loads(Forces), Stress analysis, Poisson ratio, Equations, One dimensional, Two dimensional, Mathematical models, Computations, Statistical distributions

Subject Categories : Metallurgy and Metallography
      Statistics and Probability
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE