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SEPTEMER 2013 (published: 01.09.2013)
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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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creep, relative stress concentration factor, interpolation rule.
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