โ Scribed by D. Lenczner
No coin nor oath required. For personal study only.
Most building materials, with the notable exception of steel, when subjected to a sustained load, undergo a continuous deformation whose rate decreases with time. This type of deformation is known as creep. In order to study problems of creep analytically it is necessary to produce a mathematical model which approximates the real material. A large number of such rheological models have been proposed and applied, mainly to problems of members under the action of direct forces. The object of this paper is to show how one of these models, often called the Burger's model, can be applied to problems of visco-elastic beams and composite units with elements of different elastic properties.
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