Accession Number : AD0677723

Title :   THE ROLE OF FRICTION IN PLANE-STRAIN AND AXISYMMETRIC EXTRUSION PROBLEMS.

Descriptive Note : Technical rept. 1 Sep 67-30 Apr 68,

Corporate Author : RENSSELAER POLYTECHNIC INST TROY N Y DEPT OF MECHANICS

Personal Author(s) : Chen,C. T. ; Ling,F. F.

Report Date : MAY 1968

Pagination or Media Count : 58

Abstract : Extrusion processes through three basic types of curved dies have been treated: cosine, elliptic and hyperbolic. Upper-bound theorem is used in obtaining mean extrusion pressures and also in choosing the most suitable deformation pattern for extrusion through square dies. Both Tresca and Mises yield criteria have been used and consideration has been given to friction at the die-material interface. Results are given in analytical form and plotted over a wide range of process variables. (Author)

Descriptors :   (*EXTRUSION, FRICTION), MATHEMATICAL MODELS, DIES, COMPRESSIVE PROPERTIES, DEFORMATION, PLASTIC PROPERTIES, GEOMETRIC FORMS, VELOCITY, STRESSES, SHEAR STRESSES, STRAIN(MECHANICS), LOADS(FORCES), FORCE(MECHANICS)

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

Distribution Statement : APPROVED FOR PUBLIC RELEASE