کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1563519 | 999612 | 2009 | 18 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A new computational algorithm for 3D contact modeling of large plastic deformation in powder forming processes
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مکانیک محاسباتی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: A new computational algorithm for 3D contact modeling of large plastic deformation in powder forming processes A new computational algorithm for 3D contact modeling of large plastic deformation in powder forming processes](/preview/png/1563519.png)
چکیده انگلیسی
In this paper, the three-dimensional large deformation frictional contact of powder forming process is modeled using a simple computational algorithm based on the augmented-Lagrange approach. The technique is applied by imposing the contact constraints and modifying the contact properties of frictional slip through the node-to-surface (NTS) contact algorithm. The Coulomb friction law is employed to simulate the friction between the rigid punch and the work-piece by the use of penalty and augmented-Lagrange approaches. It is shown that the augmented-Lagrange technique significantly improves imposing of the constraints on contact surfaces. The nonlinear contact friction algorithm is employed together with a double-surface cap plasticity model for highly nonlinear behavior of powder within the framework of large FE deformation in order to predict the non-uniform relative density and stress distributions during the large deformation of powder die-pressing. Finally, the numerical schemes are examined for accuracy and efficiency in modeling of a set of powder components.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computational Materials Science - Volume 46, Issue 1, July 2009, Pages 203-220
Journal: Computational Materials Science - Volume 46, Issue 1, July 2009, Pages 203-220
نویسندگان
A.R. Khoei, S.O.R. Biabanaki, A.R. Vafa, S.M. Taheri-Mousavi,