Scientific journal NRU ITMO
Series "Processes and Food Production Equipment"
Registration certificate ЭЛ № ФС 77 – 55245 - 04.09.2013
registered by the Federal Inspectorate Service for Communication, Information Technologies and Communication Media
ISSN:2310-1164

SEPTEMER 2013 (published: 01.09.2013)

Number 3(17)

Home > Issue > Interpolation rule for estimating the greatest stress in a structure subject to creep

UDC 664

Interpolation rule for estimating the greatest stress in a structure subject to creep

Aret V.A., Eliseev A.M. , Fedorova L.A.

Several widely used in Food technologies simple structures made of material for which the creep strain rate is proportional to the nth power of stress are studied with a view to determining the way in which the greatest stress in the structure varies with the exponent n when the geometry of the structure and the load carried by the structure remain unchanged. From a study of the results a simple empirical linear rule for interpolating for greatest stress between the specially simple cases n=1 and n→∞ (which correspond to exact analogues of linear elastic and perfectly plastic material respectively) is devised. The rule was verified on the base K-method
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Keywords: creep, relative stress concentration factor, interpolation rule.

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