A Comparison Between Numerical and Analytical Modeling of ECAP

Publish Year: 1393
نوع سند: مقاله ژورنالی
زبان: English
View: 468

This Paper With 8 Page And PDF Format Ready To Download

  • Certificate
  • من نویسنده این مقاله هستم

استخراج به نرم افزارهای پژوهشی:

لینک ثابت به این Paper:

شناسه ملی سند علمی:

JR_IJMF-1-1_006

تاریخ نمایه سازی: 8 دی 1395

Abstract:

Recent developments in nanostructured products draw considerable attention to ultrafine grained materials. These materials are normally manufactured by different severe plastic deformation (SPD) methods. In the present study, analytical models and finite element method (FEM) are used to calculate strain imposed to a specimen that was deformed by equal channel angular pressing (ECAP). In addition, strain inhomogeneity in term of coefficient of deviation (CV) for an aluminum alloy (AA6101) which was processed under ECAP was calculated. Dies with 90º, 105º and 120º intersecting angles were modeled based on FEM. Furthermore, the effect of friction on force-displacement curves was investigated using analytical and numerical approaches. Moreover, the energy loss that is due to friction was computed. Strains calculated by FEM for different die angles were identical to those evaluated by analytical models. Based on the numerical and analytical models, it has been shown that strain inhomogeneity increases when the angle between two channels decreases.

Authors

M Rejaeian

Faculty of Mechanical Engineering, K.N. Toosi University of Technology, Tehran, Iran

M Aghaie-Khafri

Faculty of Mechanical Engineering, K.N. Toosi University of Technology, Tehran, Iran