25-61 STUDIUL EFECTULUI TEMPERATURII ÎN APARIŢIA TENSIUNILOR REMANENTE DIN CAZUL DISCURILOR DE GROSIME MICĂ. Partea I-a – STUDIUL PROPAGĂRII TEMPERATURII


THE STUDY OF TEMPERATURE EFFECT IN
THE RESIDUAL STRESSES OCCURRENCE FOR
THE CASE OF LOW THICKNESS DISKS
PART I – THE STUDY OF THE TEMPERATURE
PROPAGATION
In order to determine the state of stress and deformation due to the
temperature, one has to study, as exactly as possible, the temperature’s
propagation mode. There are many practical situations when in some bodies’
material exist self-balanced stresses, even in the absence of any load.
These are residual stresses. Their magnitude and their distribution
depend on the material, on the technological working process, on the machine
parts’ size. The residual stresses appear mainly because of the local
deformations in the elastic-plastic field, because of some structural
transformation or because of some thermo-elastic-plastic deformations.
The paper presents some aspects regarding the residual stresses due
to the heat treatment and to the shallow working.
Key words: residual stresses, deflections, temperatures, plastic plate
Cuvinte cheie: tensiuni remanente, deformaţii plastice, temperatură,
placă
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