DocumentCode :
515005
Title :
Evaluating Stress Distributions and Stress Intensity Factors of a Crack under Mixed-Mode conditions in Aluminum Alloy
Author :
Ma Youli
Author_Institution :
Sch. of Civil & Refrigeration Eng., Harbin Univ. of Commerce, Harbin, China
Volume :
2
fYear :
2010
fDate :
13-14 March 2010
Firstpage :
164
Lastpage :
167
Abstract :
England has examined the two-dimensional problem of a mode I crack opened under constant pressure between two dissimilar materials. But in many cases, it has to be considered that a crack under mixed-mode conditions is lying in a similar material such as aluminum alloy. In this paper, therefore, equations of mode I and mode II stress distributions ¿yy, ¿xy were derived according to opening/sliding discontinuous displacements for cracks under mixed-mode conditions, considering effect of finite plate, using England´s basic formulas. Then mode I stress intensity factor KI and mode II stress intensity factor KII were evaluated by ¿yy, ¿xy. On the other hand, for an ideal mixed-mode crack lying in an aluminum alloy specimen (finite plate), this method was verified by measuring the opening and sliding discontinuous displacements along the crack. As a result, KI and KII are almost the same with the results calculated by empirical equations. That is to say, it provides an effective method to evaluate the deformation behavior of a crack under mixed-mode conditions even though stress distributions are unknown.
Keywords :
aluminium alloys; crack-edge stress field analysis; aluminum alloy; crack; finite plate; stress distribution evaluation; stress intensity factors; Aerospace materials; Aluminum alloys; Automation; Bonding; Conducting materials; Equations; Mechatronics; Pressure measurement; Stress measurement; Tensile stress; Aluminum alloy; Finite plate; Mixed-mode crack; Stress distribution; Stress intensity factor;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Measuring Technology and Mechatronics Automation (ICMTMA), 2010 International Conference on
Conference_Location :
Changsha City
Print_ISBN :
978-1-4244-5001-5
Electronic_ISBN :
978-1-4244-5739-7
Type :
conf
DOI :
10.1109/ICMTMA.2010.229
Filename :
5460119
Link To Document :
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