validation studies

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Induction Welding of Composite Materials

Joining together of composite materials like Carbon Fibre Reinforced Polymer (CFRP) is an important technological problem in many applications. Due to its high strength-to-weight ratio, CFRP is increasingly widely used in aerospace, automotive, civil engineering, consumer products and other industries. As the number of applications increases, it becomes necessary for every new case to optimise […]

Posted in Induction Welding,Motors
RF Cavity Analysis

Modelling accelerator cavities in Opera-3d

Introduction Resonant circuits are very commonly found in the many types of device where ac signals and fields are generated or used. One important class of resonator, used in a number of industrial and scientific applications, is the conducting cavity. Unlike the lumped element components usually found in electronic circuits, the cavity resonator is a […]

Posted in Charged Particle Devices
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Electromagnetic, thermal and stress analyses of RF cavities in Opera-3d

Introduction Many high frequency devices operate at high power, and material losses can lead to significant rise in temperature if left unchecked. In such devices, it is important to know the temperature distribution to determine the performance impact of changes in dimensions and material properties, to ensure that the permitted maximum operating temperature and stresses […]

Posted in General
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Electromagnetic, thermal and stress analyses of RF components in Opera-3d

Introduction Many high frequency devices operate at high power, and material losses can lead to significant rise in temperature if left unchecked. In such devices, it is important to know the temperature distribution to determine the performance impact of changes in dimensions and material properties, to ensure that the permitted maximum operating temperature and stresses […]

Posted in Charged Particle Devices,Electron & Ion Beam Lithography
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Opera-3d Thin Plate Approximation Increases Productivity

Introduction Many electromagnetic simulations include ferrous geometry with extreme aspect ratios. A good example of this is magnetic signature calculations of naval vessels, where the hull, deck and bulkhead plates are several metres wide but only a few centimetres thick. Opera-3d already has useful features, such as mesh layering and hexahedral / prism elements, that […]

Posted in General
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Magnetic shielding of an MRI magnet using the Thin plate boundary condition

Many electromagnetic simulations include ferrous geometry with extreme aspect ratios. A good example of this is modelling the magnetic shielding in a calculation of the stray field from a shielded room surrounding a representative superconducting coil set of an MRI magnet. It is an important legislative requirement that public areas are only subjected to DC […]

Posted in Magnets
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Direct Sparse Solver in Opera-2d

The Opera-2d Direct Sparse Solver (DSS) option is now unlicensed. This means that all users of Opera-2d can benefit from the faster analysis time that this option allows without compromising accuracy. The DSS option gives ~2-4 times speed-up depending on the type of analyses and the size of the model. A comparison of solution times […]

Posted in General
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Prism Gap

Starting with version 18R1 of Opera, the re-meshing algorithm for Motional Electromagnetic models has been enhanced to include prismatic elements in the gap region of rotating electrical machines. This allows machine designers to extend the use of mosaic mesh to all regions of a model. Using prismatic elements in the gap region significantly reduces solving […]

Posted in General
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TEAM 24 – Nonlinear time transient rotational test rig

The purpose of this Application Note is to present the setup and analysis of a Finite Element model that shows the effects of induced eddy currents using the Opera-3d suite. Problem 24 is an electromagnetic benchmark proposed by the International Compumag Society and is a part of the Testing Electromagnetic Analysis Methods (T.E.A.M) [1] benchmarks, […]

Posted in Motors,Switched Reluctance Machines
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Co-simulation of a pulsed septum magnet and control circuit

Introduction Particle accelerators, such as the Large Hadron Collider (LHC) at CERN, make use of dipole magnets to steer the particle beam. The field is essentially unidirectional between the magnet poles and its interaction with the orthogonal particle beam causes the beam to bend. Many of these magnets are operated with dc current to maintain […]

Posted in Accelerator Magnets,Bending / Separating Magnets,Magnets
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