When viscous fluid in a corner is disturbed, eddies can form the absence of inertia. Examples flow configurations which this motion occurs include through an abrupt contraction and over cavity. Six decades ago, Moffatt ( J. Fluid Mech. , vol. 18, 1964, pp. 1–18) calculated slow Newtonian fluids sharp corners, detailing his eponymous ‘Moffatt eddies’. In study we examine flows viscoplastic mater...

We propose a model for the formation of drying cracks in a viscoplastic material. In this model, we observe that when an external force is applied to a viscoplastic material before drying, the material memorizes the effect of the force as a plastic deformation. The formation of the drying cracks is influenced by this plastic deformation. This outcome clarifies the result of recent experiments w...

We present an estimate approach to compute the viscoplastic behavior of a polymer matrix composite (PMC) under different thermomechanical environments. This investigation incorporates computational neural network as the tool for deter-mining the creep behavior of the composite. We propose a new second-order learning algorithm for training the multilayer networks. Training in the neural network ...

We present and discuss an algorithm for the numerical solution of nonlinear differential equations of fractional (i.e., non-integer) order. This algorithm allows us to analyze in an efficient way a mathematical model for the description of the behaviour of viscoplastic materials. The model contains a nonlinear differential equation of order β, where β is a material constant typically in the ran...

In this dataset, 15 samples of laponite-CMC mixes were realized and their viscoplastic properties are determined. Rheological parameters are then expressed as a function of age and components concentrations.