کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7196040 | 1468305 | 2018 | 31 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A new enrichment scheme in XFEM to model crack growth behavior in ductile materials
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: A new enrichment scheme in XFEM to model crack growth behavior in ductile materials A new enrichment scheme in XFEM to model crack growth behavior in ductile materials](/preview/png/7196040.png)
چکیده انگلیسی
In this paper, a new enrichment scheme is employed in conjunction with XFEM for the stable crack growth analysis in ductile materials. In the proposed enrichment scheme, only Heaviside enrichment function is used with the ramp function to model the entire crack. The objective of ramp function is to terminate the effect of Heaviside enrichment function exactly at the crack tip in the crack tip element. It also reduces the stiffness matrix size of the crack tip element as compared to standard XFEM. The nonlinear equations obtained as a result of material nonlinearity are solved using Newton-Raphson iterative method. J-R criterion is used to model the stable crack growth in ductile materials. To check the accuracy and effectiveness of the proposed enrichment scheme, four standard fracture mechanics problems of homogenous and bi-materials are considered for the simulations. The numerical results obtained through proposed enrichment scheme are compared with available literature results and are found in good agreement.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Theoretical and Applied Fracture Mechanics - Volume 96, August 2018, Pages 296-307
Journal: Theoretical and Applied Fracture Mechanics - Volume 96, August 2018, Pages 296-307
نویسندگان
Sachin Kumar, G. Bhardwaj,