Optimal die design for work-hardening metals

نویسندگان

چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

On the Optimum Die Shape in Rod Drawing Process Considering Work-Hardening Effect of Material

The assessment of the influence of the work-hardening of material on the optimum die profile and drawing force  in rod drawing process is the main objective of the present paper. The upper bound solution, based on the assumption of perfect plasticity, has been extended to consider the work-hardening of the material during the rod drawing process through curved dies. Analytical results of drawin...

متن کامل

A cell theory for stage IV work hardening of metals and semiconductors

2014 Work hardening of fcc metals and diamond structure crystals is considered in a cell model. Depending on stacking fault energy and temperature dynamic recovery can occur by cross slip or climb. The remaining dislocations cause a rehardening stage IV of two different origins and in two temperature ranges before the other dynamic recovery mechanism terminates work hardening. J. Phys. France 5...

متن کامل

Optimal control of laser hardening

We present a mathematical model for the laser surface hardening of steel. It consists of a nonlinear heat equation coupled with a system of ve ordinary diierential equations to describe the volume fractions of the occuring phases. Existence, regularity and stability results are discussed. Since the resulting hardness can be estimated by the volume fraction of martens-ite, we formulate the probl...

متن کامل

Work hardening: past, present, and future--the work programs special interest section national work-hardening outcome study.

OBJECTIVES A review of outcome research conducted between 1982 and 1992 revealed return-to-work rates for industrial rehabilitation programs that ranged from 50% to 88%. Variations in outcome statistics appeared to reflect discrepancies in factors such as type of research design, initial characteristics of the client sample, and clients excluded from the study group. METHOD A work-hardening o...

متن کامل

The optimal clearance design of micro - punching die

AbstrAct Purpose: The purpose of this research paper is focused on the optimal clearance design of micro-punching die by abductive network and SA method. Design/methodology/approach: The punching data (input) and wear size (output) were collected for a training database. In order to select proper clearance to evaluate the wear of die, the abductive network was used to establish an efficient rel...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Journal of Mathematical Analysis and Applications

سال: 1986

ISSN: 0022-247X

DOI: 10.1016/0022-247x(86)90232-5