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Title: Theoretical backgrounds of durability analysis by normalized equivalent stress functionals
Authors: Mikhailov, SE
Keywords: Durability;strength;Conditions; Endurance limit; Dynamic failure
Issue Date: 2003
Publisher: Sage
Citation: Mathematics and Mechanics of Solids. 8(2): 105-142
Abstract: Generalized durability diagrams and their properties are considered for a material under a multiaxial loading given by an arbitrary function of time. Material strength and durability under such loading are described in terms of durability, safety factor and normalized equivalent stress. Relations between these functionals are analysed. We discuss some material properties including time and load stability, self-degradation (ageing), and monotonic damaging. Phenomenological strength conditions are presented in terms of the normalized equivalent stress. It is shown that the damage based durability analysis is reduced to a particular case of such strength conditions. Examples of the reduction are presented for some known durability models. The approach is applicable to the strength and durability description at creep and impact loading and their combination.
Appears in Collections:Dept of Mathematics Research Papers
Mathematical Sciences

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