Assessment and improvement of elementary force computations for cold forward rod extrusion
Joint Authors
Ocal, Muhsin
Egemen, Mete
Tekkaya, A. Erman
Source
The Arabian Journal for Science and Engineering. Section C, Theme issues
Issue
Vol. 30, Issue 1C(s) (30 Jun. 2005), pp.83-102, 20 p.
Publisher
King Fahd University of Petroleum and Minerals
Publication Date
2005-06-30
Country of Publication
Saudi Arabia
No. of Pages
20
Main Subjects
Topics
Abstract AR
استخدمنا في هذا البحث طريقة العناصر الحدية الحسابية لتقييم طريقة القوى التحليلية الحسابية للحركة التقدمية لعمود تبريد.
و قد استخدمنا أنموذج أفيتزر (Avitzur)، المعتمد على مجال السرعة الكروي، و على أنموذج سيبل (Siebel)، و قد وجدنا أن نسبة تشوه القوى الناتجة عن جمع القوى المثالية و الكامنة تختلف بمقدار (20 % -) إلى (25 % +) عند الحلول الناتجة عن طريقة العناصر الحدية، كما أن حد كولومب يحدث اختلافات أكبر في الوسط المأوي.
نقترح في هذا البحث أنموذجا جديدا يعتمد على تحليل شبه مطاطي مقرون بطريقة التحليل العددي، و ذلك لحساب هذا الحد، و كذلك لتحديد توزيع الضغط داخل الوسط الحاوي.
Abstract EN
Two commonly used analytical force computation methods for cold forward rod extrusion are evaluated by means of precise finite element computations.
The upperbound model by Avitzur based on the spherical velocity field and the model by Siebel based on a quasi-upper-bound solution are considered.
It has been found that the pure deformation forces obtained by summing the ideal force and shear force terms deviate between +25% and –20% from the finite element solutions.
Larger deviations, however, occur for the Coulomb-friction term in the container.
A new model based on an elasto–static analysis combined with numerical analysis is suggested to compute this term.
This new model supplies also the accurate pressure distribution within the container.
American Psychological Association (APA)
Ocal, Muhsin& Egemen, Mete& Tekkaya, A. Erman. 2005. Assessment and improvement of elementary force computations for cold forward rod extrusion. The Arabian Journal for Science and Engineering. Section C, Theme issues،Vol. 30, no. 1C(s), pp.83-102.
https://search.emarefa.net/detail/BIM-360225
Modern Language Association (MLA)
Ocal, Muhsin…[et al.]. Assessment and improvement of elementary force computations for cold forward rod extrusion. The Arabian Journal for Science and Engineering. Section C, Theme issues Vol. 30, no. 1C(s) (Jun. 2005), pp.83-102.
https://search.emarefa.net/detail/BIM-360225
American Medical Association (AMA)
Ocal, Muhsin& Egemen, Mete& Tekkaya, A. Erman. Assessment and improvement of elementary force computations for cold forward rod extrusion. The Arabian Journal for Science and Engineering. Section C, Theme issues. 2005. Vol. 30, no. 1C(s), pp.83-102.
https://search.emarefa.net/detail/BIM-360225
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 101-102
Record ID
BIM-360225
