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Showing 1 to 15 of 15 for “"Maxwell stress"”.
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Electromagnetic and Systems Design of a Permanent Magnet Synchronous Motor for an Electric Vehicle
… more accurate magnetic scalar potential and the Maxwell stress tensor. Thermal analysis is performed to determine peak and continuous current capability. Parameter sweeps are used to optimize machine design for a 20 kW hub motor in a student-built high-performance electric vehicle. The …
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Design optimization of permanent magnet actuators.
… e.g. Lorentz equation, Virtual Work, and Maxwell Stress Integration techniques, in order to determine an appropriate technique for incorporation in a non-linear iterative optimization strategy. The application of constrained optimization in a design environment is demonstrated by design …
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The Impact Dynamics of Weakly Charged Droplets
… limit for representative impact conditions, the Maxwell stress overcomes the gas pressure buildup to deform the droplet bottom surface. A conical liquid tip forms and pierces Through the gas film, leading to a circular contact line moving outwards that does not trap any gas. The critical charge …
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Optical momentum transfer to macroscopic media
… momentum transfer to macroscopic media. The Maxwell stress tensor and the distributed Lorentz force are first applied to calculate forces on lossless media and are shown to be in excellent agreement. It is shown that a normally incident plane wave pushes a slab in the wave propagation …
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A Numerical Simulation Optimizing Droplet Motion Driven by Electrowetting
… DEP force was calculated from integration of the Maxwell Stress Tensor, however, the force was not integrated into the simulation to assist with droplet movement.</p> <p>It was found that as the droplet overlap onto the neighboring electrode, or droplet radius to electrode size ratio, decreased, …
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Double-frequency stator core vibration in large two-pole turbogenerators
… as tooth-tip forces formed from the integral of Maxwell stress over a slot pitch. Conversion to core-back vibration is by means of transfer coefficients derived from structural finite-element analyses of isolated core models.<br/><br/>A simple model, in which the rotor and stator are considered …
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Numerical stimulation of stress-induced crystallization of injection molded semicrystalline thermoplastics
… of the lack of sound theoretical models for stress-induced crystallization kinetics in thermoplastics, simulations of the injection molding process of semicrystalline plastics with the consideration of stress-induced crystallization have been scarce. A stress-induced crystallization model for …
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Multiphysics-based Fluidic Manipulation of Particles: An Experimental and Numerical Study
… Lagrangian-Eulerian (ALE) method coupled with Maxwell stress Tensor (MST) approach was applied to solve the particle-fluid-field interaction problem, in which the motion of the particles (both translation and rotation), the flow field and the external electric/magnetic field are closely …
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Optimisation of silicone-based dielectric elastomer transducers by means of block copolymers – synthesis and compounding
… have been studied. Their actuation occurs when Maxwell stress exceeds elastic stress in the presence of an electrical field, resulting in contraction in thickness and planar expansion in the area. As well as an actuator, dielectric elastomers can be used as generators and sensors. As a …
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Electro hydrodynamic manipulation of the process of self-assembly of particles at fluid-fluid interfaces
… the particles is calculated by integrating the Maxwell stress tensor (MST) over the particle surfaces. One of the key features of the DLM method is that the fluid-particle system is treated implicitly by using a combined weak formulation where the forces and moments between the particles and …
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Interstellar turbulence driven by magneto-rotational instability
… of the horizontal components of the Reynolds and Maxwell stresses. The result is that the MRI-driven turbulence is magnetic-dominated: its magnetic energy exceeds the kinetic energy by a factor of 4. The Reynolds stress is small and less than 1% of the Maxwell stress. The angular momentum …
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Electrohydrodynamic manipulation of multiphase fluids
… the electrostatic forces are computed using the Maxwell stress tensor approach. The distributed Lagrange multiplier method is used for tracking particles. One of the main results of this work is that the distribution of particles on the surface of a drop can be manipulated by subjecting it to a …
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Analysis of a permanent magnet hybrid linear stepping motor
… found that both the Coulomb's approach and the Maxwell stress tensor are efficient and accurate methods to implement. The classical virtual work CVW method is very time-consuming since it requires two solutions. The determination of small incremental displacement is also difficult in the CVW. …
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Shear flow instabilities in stratified magnetohydrodynamics
… notable finding for a range of Rm»1 is that the Maxwell stress takes over as the dominant energy contributor to the magnetic energy in the nonlinear phase, initiating a sustained nonlinear amplification of the magnetic field strength over the time interval of simulation.<p></p>
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Mechanical response of polyether polyurethane foams under multiaxial stress and the initial yielding of ultrathin films
… measure the mechanical response in the form of a stress-strain curve or a force-displacement curve; in several tests we use a Digital Image Correlation (DIC) technique to compute the strain fields on the surface of the specimen. For some loading cases, including uniaxial compression along the rise …