ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
In order to evaluate the structural integrity of the breech system used for a thick-walledcylinder subjected to pulsating high internal pressure, fatigue life simulation of a breech system wasperformed. A stress analysis of the breech was performed to locate the critical region vulnerable tocrack initiation. Low-cycle fatigue behavior of the breech material was investigated to obtain thefatigue crack initiation properties. Elastic-plastic finite element stress analysis resulted in a stressconcentration at the breech ring groove root. Strains at the breech ring and block wereexperimentally measured using strain gages and resulted in similar values compared to thecalculated strains. Local strain approach was employed to estimate the fatigue life of the breechsystem for crack initiation at the groove root of the breech ring. Fatigue tests using simulationspecimens were performed and an averaged fatigue life was obtained, showing a very goodagreement with the calculated fatigue life within a factor of two
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.326-328.1027.pdf
