Pełzanie Metali i Obliczanie Pełzania
The author gives a survey of various creep theories used for the computation of structures working at high temperatures. The conditions are analyzed under which steady-state creep takes place. The notion of quasi-steady-state creep is introduced in which the stresses are unknown and the strain rates...
| Published in: | Engineering Transactions |
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| Main Author: | |
| Format: | Article |
| Language: | English |
| Published: |
Institute of Fundamental Technological Research Polish Academy of Sciences
1960-09-01
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| Online Access: | https://et.ippt.pan.pl/index.php/et/article/view/2926 |
| Summary: | The author gives a survey of various creep theories used for the computation of structures working at high temperatures.
The conditions are analyzed under which steady-state creep takes place.
The notion of quasi-steady-state creep is introduced in which the stresses are unknown and the strain rates are not constant. It is seen that in a number of machine design problems the most simple computation methods lead to sufficiently accurate results and may constitute a basis for strength determination. This statement is illustrated by experimental data from the destruction tests of rotating discs. A computation based on the creep theory enables us to foretell in a comparatively accurate manner the destruction. The author gives some computation methods of discs on the basis of the theory of strain-hardening taking the stress-distribution into consideration, which is particularly important for the analysis of non-steady states. Also the stability problem under the conditions of creep is considered. The stability loss of a compressed bar is analyzed on the basis of the inheritance theory presented previously by the author.
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| ISSN: | 0867-888X 2450-8071 |