Standardization field | Mechanical engineering |
Technical committee | BAS/TC 41- Pressure equipment and containers |
Term (EN) | secondary stress |
Definition (EN) | stress developed by constraints due to geometric discontinuities, by the use of materials of different elastic moduli under external loads, or by constraints due to differential thermal expansions
Note 1 to entry: With respect to the mechanical behaviour of the structure, the basic characteristic of a secondary stress is that it is self-limiting, i.e. local flow deformation leads to a limitation of the stress. Secondary stresses lead to plastic deformation when equalizing different local distortions in the case of excess of the yield strength.
Note 2 to entry: Only stresses that are distributed linearly across the cross-section are considered to be secondary stresses. For non-linearly distributed stresses, the secondary stresses are those of the equivalent linear distribution.
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Term (FR) | |
Definition (FR) | |
Term (DE) | |
Definition (DE) | |
Term (BS) | sekundarni naponi |
Definition (BS) | naponi razvijeni od ograničenja uslijed geometrijskih diskontinuiteta, upotrebom materijala različitog modula elastičnosti pod vanjskim opterećenjem, ili od ograničenja uslijed razlike termičkog izduženja
Napomena 1: Uzimajući u obzir mehaničko ponašanje konstrukcije, osnovna karakteristika sekundarnih napona jeste da su samoograničeni; t.j. lokalna deformacija tečenja vodi ka ograničenju napona. Sekundarni naponi vode plastičnoj deformaciji kad se izjednače različite lokalne deformacije u slučaju prelaska napona tečenja.
Napomena 2: Samo se naponi koji su raspodijeljeni linearno poprečnim presjekom smatraju sekundarnim naponima. Za nelinearno raspodijeljene napone, sekundarni naponi su oni koji imaju ekvivalentnu linearnu raspodjelu.
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Term (HR) | |
Definition (HR) | |
Term (SR) | |
Definition (SR) | |
Date | 2016-11-28 |
Standards | BAS EN 764-1+A1:2016 |
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