Steady State Axisymmetric Deformations Of A Thermoviscoplastic Rod Striking A Hemispherical Rigid Cavity

Abstract

Steady state thermomechanical deformations of a semi-infinite rod moving at a very high speed and hitting a rigid hemispherical cavity are studied. It is assumed that the deformations of the rod are axisymmetric, that its material can be modeled as rigid-viscoplastic, that the material exhibits work-hardening, strain-rate hardening and thermal softening effects, and that the contact between the deforming rod and the cavity surface is smooth. It is found that the axial force experienced by the rod depends strongly upon its speed. An effort has been made to identify the effect of work hardening, strain-rate hardening and thermal softening on the deformations of the rod. Results computed and presented graphically include the distribution of the velocity field, the temperature change, the second-invariant of the strain-rate tensor and the principal stresses in the deforming region. Also plotted are the normal tractions on the cavity wall. © 1989.

Department(s)

Mechanical and Aerospace Engineering

International Standard Serial Number (ISSN)

0734-743X

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2023 Elsevier, All rights reserved.

Publication Date

01 Jan 1989

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