چکیده مقاله
This study presents a novel application of the decoupled equations method DEM to model crack issues Accurate stress intensity factors SIFs based on linear elastic fracture mechanics LEFM are directlycomputed using the DEM, which is based on stress redistribution However, in fracture mechanics e g ,crack issue problems, the concept of redistribution is not applicable, due to infinite stress in the crack tip To overcome this problem, an analytical function is proposed to represent infinite stress in crack tip, soredistribution concept may be applied Consequently, when the local coordinates origin LCO is locatedat the crack tip, SIFs can be determined directly without further processing, in which to present infinitestress in crack tip, a new body force function is proposed Validity and accuracy of this method is fullydemonstrated through a benchmark problem which is successfully modeled using a few numbers ofdegrees of freedom The numerical results agree very well with the results from existing numericalmethods available in literature
کلیدواژهها
نویسندگان
مهدی یزدانی
PhD Candidate, Faculty of Civil and Environmental Engineering, Tarbiat Modares University,Tehran, Iran
Naser Khaji
Professor, Faculty of Civil and Environmental Engineering, Tarbiat Modares University, Tehran,Iran
شیوه ارجاع
Yazdani, Mahdi and Khaji, Naser,1394,Development of Decoupled Equations Method to Calculate StressIntensity Factors in 2D problems,10th International Congress on Civil Engineering,Tabriz
ارائهشده در
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