Accession Number : AD0641257

Title :   ANALYTICAL PREDICTION OF DEFECTS FOR EXTRUSION THROUGH CONICAL DIES OF VARYING REDUCTIONS AND DIE ANGLES.

Descriptive Note : Progress rept.,

Corporate Author : CALIFORNIA UNIV BERKELEY DEPT OF MECHANICAL ENGINEERING

Personal Author(s) : Altan,Taylan ; Kobayashi,Shiro

Report Date : JUL 1966

Pagination or Media Count : 236

Abstract : The principal aim during the first year of investigation was to develop a theoretical method of analysis for obtaining the detailed mechanics of the extrusion process, with special reference to extrusion through conical dies. The visioplasticity and upper-bound methods were summarized, and the method of calculating temperature distributions was reviewed. Extended treatment of admissible velocity fields was then made, and a numerical method was developed for predicting the non-steady-state temperature distributions. A computer program of the entire procedure was completed for general use. (Author)

Descriptors :   (*EXTRUSION, MECHANICS), DIES, CONICAL BODIES, DEFECTS(MATERIALS), MATHEMATICAL PREDICTION, COMPUTER PROGRAMMING, NUMERICAL METHODS AND PROCEDURES, TEMPERATURE, THEOREMS, NUMERICAL ANALYSIS, PLASTIC PROPERTIES

Subject Categories : Mfg & Industrial Eng & Control of Product Sys

Distribution Statement : APPROVED FOR PUBLIC RELEASE