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International Journal of Engineering، جلد ۲۹، شماره ۱۲، صفحات ۱۷۴۱-۱۷۴۶
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| عنوان فارسی |
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| چکیده فارسی مقاله |
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| کلیدواژه‌های فارسی مقاله |
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| عنوان انگلیسی |
Stress Intensity Factor Determination in Functionally Graded Materials, Considering Continuously Varying of Material Properties |
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| چکیده انگلیسی مقاله |
In this paper, the plates made of functionally graded material (FGM) with and without a crack are numerically simulated, employing the finite element method (FEM). The material property variations are defined to be fully continuous; therefore, the elements can be as small as required. For this purpose, variations of the material properties are applied in both the integration points and in the nodes by implementing a subroutine in the ABAQUS software and hence, the stress field in the singular points such as crack tip is accurately achieved. First, the stresses in the plate without a crack are numerically determined and the accuracy of FGM behavior is validated. Then, the J-integral is investigated and the stress intensity factor (SIF) of the plate with a crack is calculated, using the strain energy release rate (SERR) and the J -integral. In the following, dependency of the J-integral on the path is studied and the results are compared with the contour independent J-integral. Finally, it is shown that if the selected path limits toward zero, the results of the J-integral, the SERR, and the contour independent J-integral are all the same. This is due to considering the continuously varying of material properties and the effect of fining the mesh at the crack tip. |
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| کلیدواژه‌های انگلیسی مقاله |
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| نویسندگان مقاله |
Hamid Khademhosseini Beheshti |
Mechanical Engineering, University of Isfahan
farhad haji aboutalebi |
Engineering, university of Esfahan
Mehdi Najimi |
Mechanical Engineering, University of Isfahan
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| نشانی اینترنتی |
http://www.ije.ir/article_72848_2555faa45ac5ba6d6d6ee1e0e6556d76.pdf |
| فایل مقاله |
اشکال در دسترسی به فایل - ./files/site1/rds_journals/409/article-409-2062193.pdf |
| کد مقاله (doi) |
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| زبان مقاله منتشر شده |
en |
| موضوعات مقاله منتشر شده |
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