Fatigue Life Program Using Strain-Life Methods

reportActive / Technical Report | Accession Number: ADA267310 | Open PDF

Abstract:

A user friendly program was developed to calculate fatigue life using Strain-Life equations, given either a stress history or a strain history. Additionally, the material parameters and associated stress concentration factors can be varied. Since certain material constants, such as cyclic strength coefficient K and cyclic strain hardening exponent n vary during a materials fatigue life, the program is capable of either keeping them constant or varying them as a function of elapsed cycles. The program was then utilized to examine the effects of varying K and n on the calculated fatigue life of aluminum 7075-T6 under a typical flight load history.

Author(s):
Skelly, Michael V.
Author Organization(s):
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
Descriptive Note:
Master's rept.
Pagination:
0091

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Monitor Series:
NPS
 Subject Terms
Joint Capability Areas:
JCA_6.3.3_Spectrum Management; JCA_4.6_Engineering; JCA_5_Command and Control; JCA_6.3_Net Management; JCA_6_Net Centric; JCA_5.3_Planning; JCA_1.2_Force Preparation; JCA_1_Force Support
Modernization Areas:
Quantum Science and Computing
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
*SOFTWARE ENGINEERING, *FATIGUE LIFE, *SUBROUTINES, *USER FRIENDLY, *CRACK PROPAGATION, COMPUTER PROGRAMS, MATERIALS, THESES, ALUMINUM, FLIGHT LOADS, STRESS CONCENTRATION, CONSTANTS, COEFFICIENTS, FLIGHT, CYCLES, STRAIN HARDENING, PARAMETERS, COMPUTATIONS
Field(s)/Group(s):
Computer Programming and Software, Mechanics
Report Date:
1993 Mar 25