Approximation of the compliance function based on continuous retardation spectrum

Abstract eng:
When describing rheologic processes in concrete, such as creep or relaxation, efficient numerical methods based on the exponential algorithm for a Kelvin or Maxwell chain are often used. Efficient identification of parameters of such a rheologic chain is a difficult problem. This paper is focused on one specific method using the concept of continuous retardation spectrum, which provides explicit formulae for determination of parameters.

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