Fracture Mechanics Analysis of Some Fatigue and Fracture Test Specimens Using Finite Elements

reportActive / Technical Report | Accession Number: ADA198895 | Open PDF

Abstract:

The NASTRAN finite element computer program was used to analyze the Model problems of a thin strip fatigue specimen with a cracked central hole in tension, and a single edge cracked specimen in tension and bending. A regular eight node isoparametric quadrilateral element was degenerated into a quarter point triangular element which approximates the stress singularity at the crack tip. Accurate values of the Model stress intensity factors were computed using this element.

Author(s):
Delserro, Gary
Author Organization(s):
NAVAL AIR DEVELOPMENT CENTER WARMINSTER PA AIR VEHICLE AND CREW SYSTEMS TECHNOLOGY DEPT
Descriptive Note:
Final rept.,
Supplementary Note:
DOI: 10.21236/ADA198895
Pagination:
0144

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

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

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
NADC-87145-60
Task Number(s):
R41423000
Project Number(s):
R41423
Monitor Series:
XB
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_5.3_Planning; JCA_1.2_Force Preparation; JCA_1_Force Support; JCA_1.2.3_Educating; JCA_6_Net Centric; JCA_3.2_Engagement; JCA_3_Force Application; JCA_4.6_Engineering
Modernization Areas:
Quantum Science and Computing
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
*COMPUTER PROGRAMS, *ALLOYS, FINITE ELEMENT ANALYSIS, VALUE, INTENSITY, ACCURACY, FRACTURE(MECHANICS), MODELS, STRESSES, CRACKS
Field(s)/Group(s):
Metallurgy and Metallography, Computer Programming and Software
Keyword(s):
PE62122N, WUNR681080
Report Date:
1987 Aug 24