金属成形加工とレオロジー

概要

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In this paper we first state the role of the mathematical theory of plasticity in solving the problems concerning various metal forming Processes and then proceed to review the basic rheological behaviours of metals, that is, the plastic flow, instability (i.e., necking and buckling) and fracture, together with their mathematical descriptions. We also discuss critically the tension, compression, torsion and hardness tests, a test under combined stresses, high-speed tests and simulative tests (i.e. the bend test, Erichsen test and conical-cup test) from the viewpoint of testing the rheological behaviours. We describe then various assumptions usually made for the theoretical analysis of forming problems as well as several techniques of experimental analysis, such as the contact stress measurement with pin pickups or with photoelastic tools, strain measurement using a grated metal specimen or a laminated plasticine specimen, and stress analysis from a measured plastic strain distribution.
社団法人日本材料学会の論文
1964-04-15