Search for dissertations about: "fractional"
Showing result 1 - 5 of 214 swedish dissertations containing the word fractional.
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1. Modelling Stiffness and Damping by Use of Fractional Calculus with Application to Railpads
Abstract : When studying the dynamic behaviour of a structure, e g a railway track, it is important for the analyst to model both stiffness and damping accurately. Mathematical models including fractional derivatives have been found to work well for many materials. Such models are linear and causal. READ MORE
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2. The Finite Element Method for Fractional Order Viscoelasticity and the Stochastic Wave Equation
Abstract : This thesis can be considered as two parts. In the first part a hyperbolic type integro-differential equation with weakly singular kernel is considered, which is a model for dynamic fractional order viscoelasticity. In the second part, the finite element approximation of the linear stochastic wave equation is studied. READ MORE
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3. Fractional Calculus and Linear Viscoelasticity in Structural Dynamics
Abstract : The use of linear viscoelasticity together with fractional calculus in time-domain structural modeling is studied. Both constitutive and structural aspects are investigated. READ MORE
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4. Models and numerical procedures for fractional order viscoelasticity
Abstract : .... READ MORE
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5. Design of a fault-tolerant fractional slot PMSM for a vehicle application
Abstract : In automotive applications, the PMSM is an interesting alternative due to the high efficiency requirement; as only a limited amount of energy can be stored in the relatively expensive battery. Another advantage is the high torque and power density since it is very important to save especially space but also weight in vehicle applications. READ MORE