RESIDUAL STRESSES AND DEFORMATIONS AT RING - SHAPED DISKS IN THERMAL FIELD (PLASTICITY CRITERIA). PART I
RADU GHEORGHE NICOLAE *, COMÄNESCU IOANA SONIA M. ** (*)"TRANSILVANIA" UNIVERSITY BRAĆOV, B-DUL. EROILOR NR. 29, TEL. 0040-0268-413000, FAX 0040-0268-410525,
(**)"TRANSILVANIA" UNIVERSITY BRAĆOV, B-DUL. EROILOR NR. 29, TEL. 0040-0268-413000, FAX 0040-0268-410525
The present paper presents the theoretical method for determination of the deformations and the loss of stability of the disk stressed by an axial - symmetric thermal field, variable according to disk radius and thickness, superposed with a field of membrane tensions given by the rotational motion. The experimental results confirm the theoretical hypothesis. This paper also presents the tension and deformation state of the disks being in a non - stationary field of temperature. The study is done until the plastic deformations occur.