Abstract
The paper deals with the nonlinear creep analysis using equilibrium finite elements. In adopting a concept of the mean value of the equivalent shear modulus, a direct iterative procedure is proposed with the minimum calculation in the modification of the global stiffness matrix. The difficulties due to the incompressibility of the creep flow are overcome by a numerical artifice where the hydrostatic stress component is considered as a Lagrange parameter. Some numerical results are shown and compared with the analytical method.
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