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:
To evaluate the 3-D stress field inside a specimen from displacement data on the freesurface obtained from the 2-D intelligent hybrid method, we developed the 3-D local hybrid methodbased on inverse problem analysis. In a previous study, when a uniform load was applied to astructure with a surface crack, it was demonstrated that the stress field was analyzed with highaccuracy. In this study, the 3-D local hybrid method was applied to a structure with a surface cracksubjected to bending load. However, a suitable solution was not able to be obtained on a bendingproblem. Therefore, another method was applied. The relative error between the J integral value ofthe whole model and the local model was compared, and accuracy was investigated. First, thevariation of accuracy with width and thickness was examined. If thickness is increased, the relativeerror decreases as found in the uniform load case. Moreover, as width increases, the relative errordecreases. However, even if width and thickness become large, accuracy does not necessarilybecome better. Therefore, the relative error was compared and a suitable hybrid size was examined
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/51/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.321-323.28.pdf
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