**Company Profile**

Tera Analysis Ltd. is an international company with headquarters in Svendborg, Denmark. Since 1989 we provide FEA simulation tools for electromagnetic, heat transfer and stress analysis.

We are very international. Our team members live in different countries, on different continents - we are united by Internet. And we rely on Internet for all kinds of our activity. We distribute software by Internet, support customers by Internet, and our main efforts for QuickField marketing are also Internet-oriented.

Dedicated QuickField Support team pays attention to every customer request - even if the free Student's version is used. World-wide network of business partners assures high level of local customer support That's why our customer base is really impressive - from the students of small universities in Africa and Eastern Europe - to the industry leaders and the most famous Universities and Research centers of the USA, Germany, Italy, Spain, Denmark, France and Great Britain.

Our main office is located in the cosy part of Denmark, at the island Taasinge in the western Baltic Sea region.

Being very international, we are closely connected with neighbouring cultural, industrial and scientical traditions.The nearby town Svendborg is known for the shipping companies and many sailors living here. Maersk - one of the world largest companies, involved in container transportation and other businesses, was established here in 1912 by Mr. Anders P. Moeller.

QuickField™ is a very efficient Finite Element Analysis package for electromagnetic, thermal, and stress design simulation with coupled multi-field analysis. It combines a family of analysis modules using the latest solver technology with a very user-friendly model editor (preprocessor) and a powerful postprocessor.

QuickField evolved from the electromagnetic simulation tool for electric generators to a powerful full-featured CAE package applicable for electrical, thermal, bio- and chemical engineering. Today it is used by major corporations and small startups, famous universities and independent researchers in all parts of the world.

QuickField originality is its unique combination of the simplicity and power - this approach was based on ideas and vision of Dr. Vyatcheslav Dombrovski and makes QuickField very different from the complicated and bulky mainstream FEA codes. Keeping QuickField simple and convenient while set of its features grow is a complicated task. But we believe that field simulations should be simple and natural part of any engineering process and this makes QuickField the tool of choice of many satisfied customers.

**QuickField Components**

Main components of QuickField are: Model Editor, Data Editor, Solver, Postprocessor and add-ins. QuickField has open object model. You can write your own utilities to extend QuickField functionality.

**QuickField Model editor**

QuickField's model editor enables you to define your models quickly, easily, and completely. You can import model fragments from AutoCAD or other CAD systems as well. Once you have built your model's geometry, creating the mesh is totally effortless.

You don't even need to choose the mesh size, since the sophisticated technology embedded in the model editor can automatically generate a smooth mesh that is suitable to your model's geometry. You can assign geometrically-based loads and boundary conditions that are totally independent of your model mesh, and they can easily be modified at any time.

Data definition in QuickField means assignment of the physical properties to the labels used for main groups of geometry primitives - edges, blocks, or vertices. Each of them may be edited by the same approach using the Data Editor. Data files are specific to the problem type, but data presentation and all operations are very similar.

QuickField's proprietary technology, the Geometric Decomposition Method

^{TM}overcomes the main drawbacks of conventional finite element analysis and provides you with an extremely efficient simulation tool. Our Geometric Decomposition Method

^{TM}achieves several goals: it optimizes the mesh distribution to produce a smooth transition from coarse to fine mesh sizes in a very short time, and it produces the domain decomposition needed for our powerful preconditioned conjugate gradient method. Our solving algorithm is exceptionally stable and can handle badly conditioned matrices arising from highly non-uniform meshes and varying material properties.

The QuickField interactive postprocessor helps you analyze results in many different graphical forms: tensor plots, vector plots, field lines, particles trajectories, color maps, and section plots along arbitrary contours. It is also equipped with a very powerful calculator that makes it very easy for you to obtain various design parameters, and calculate different surface and volume integral quantities in arbitrary regions.

**Add-ins**

QuickField add-ins extend the basic functionality of QuickField. They are distributed by Tera Analysis Ltd free of charge, and covered by the terms of QuickField Software License.

**QuickField ****Package**

QuickField may be ordered in different analysis configurations. Each package is equipped with model editor (preprocessor), data editors, solvers and postprocessors. Types of solvers, data editors and postprocessors depend on the analysis options included, and full selection of options is listed below.

**DC magnetics**

The DC magnetic (magnetostatic) module may be used for analysis of problems, which require calculation of static magnetic fields caused by combination of local and/or distributed direct currents, permanent magnets and also external fields defined by boundary conditions. DC magnetics is similar to AC magnetics in the where the current frequency is low enough for the problem to be considered static. But unlike AC Magnetic, DC Magnetic module allows inclusion into the field model any number of non-linear magnetic materials and permanent magnets with known coercive force.

The DC magnetic module is used for design and analysis of devices such as solenoids, electric motors, magnetic shields, permanent magnets, disk drives, and so forth.

Features of the DC magnetic module:

l Materials: linear and nonlinear permeabilities

l Special utility for editing B-H curves

l Permanent magnets with linear or nonlinear demagnetization curves

l Superconductors

l Distributed and concentrated currents

l Dirichlet or Neumann boundary conditions

l Special approximation functions for axisymmetric formulations that provide high precision near the axis of rotation

l Results: magnetic flux density, field intensity, potential, permeability, energy, self and mutual inductances, magnetic forces, torques, and other integral quantities

l Couplings: the magnetic forces can be used for stress analysis on any existing part (magneto-structural coupling); magnetic state import from one DC Magnetic problem to another.

**AC magnetics**

The AC magnetic analysis module can be used for various problems, requiring study of the magnetic fields caused by time-harmonic alternating source currents, and currents induced by time-harmonic magnetic fields (eddy currents), proximity effects, calculate impedances, Joule losses, electromagnetic forces.

As a specific type of Electromagnetic simulations, AC Magnetic (or Time-Harmonic Magnetic) analysis require all voltages and currents in the problem to vary with the same frequency, and all media have linear properties. Otherwise the formulation stop being time-harmonic, and such problems may require Transient Magnetic analysis. However, AC Magnetic module works much faster and often may be used as a first approximation approach of more complex electromagnetic problems.

The AC magnetic field simulation can be coupled with electric circuit.

AC Magnetic package is ideal for designing induction heating devices, transformers, solenoids, electric motors, and many other types of inductors.

Features of the AC magnetic module:

l Materials: orthotropic permeability, current-carrying conductors with known current or voltage

l Loads: voltage, total current, multiple current sources with different phases, current density, uniform external fields

l Boundary conditions: prescribed potential values (Dirichlet condition), prescribed values for tangential flux density (Neumann condition)

l Superconductors

l Results: magnetic potential, current density, voltage, flux density, field intensity, forces, torques, Joule heat, magnetic energy, AC impedances, self and mutual inductances and other integral quantities. Most quantities are presented in amplitude-phase form (complex numbers) as well as time-averaged, and RMS values (where applicable)

l Couplings: the magnetic forces can be used for stress analysis on any existing part (magneto-structural coupling); and power losses can be used as heat sources for thermal analysis (magneto-thermal coupling)

**Transient magnetics**

The Transient Magnetic module is designed for analysis of transient processes in electromagnetic fields at low and medium frequencies. It includes features of both AC and DC magnetic modules. Transient Magnetic analysis used in QuickField combines DC magnetics with time stepping. Therefore all features of DC Magnetic analysis are fully applicable to the Transient Magnetic module.

Transient Magnetic analysis overcomes the limitations of both AC and DC formulations - it allows simulation of dynamic systems with non-linear materials and permanent magnets under variety of conditions, including sinusoidal and pulsed current excitation. However, Transient Magnetic analysis requires calculation for many time steps, therefore it is more time consuming than corresponding AC or DC magnetic problem solution.

The Transient magnetic module is applicable to studies of switch on/off modes, failures, AC excitation of devices with non-linear magnetic materials; pulses in power electronic equipment and variety of other processes and devices where AC or DC approaches don't work.

The transient magnetic field simulation can be coupled with electric circuit.

The Transient Magnetic module can be used to design and analyze electromagnetic devices, such as actuators, electromagnetic transducers, electric motors, magnetic shields, permanent magnets, and so forth.

Features of the Transient Magnetic module:

l Materials: Linear and nonlinear permeabilities

l Special utility for editing B-H curves

l Permanent magnets with linear or nonlinear demagnetization curves

l Distributed and concentrated currents

l Dirichlet or Neumann boundary conditions

l Special approximation functions for axisymmetric formulations that provide high precision near the axis of rotation

l Results: magnetic flux density, field intensity, potential, permeability, energy, self and mutual inductances, magnetic forces, torques, and other integral quantities

l Couplings: the magnetic forces can be used for stress analysis on any existing part (magneto-structural coupling); power losses can be used as heat sources for thermal analysis (magneto-thermal coupling)

**Electric analysis**

**Electrostatics**

The Electrostatic module may be used for simulation of electric fields, caused by known charges and voltages distribution. The fields should be static - this means that no currents or varying voltages may be defined or analyzed. Electric field in these non-static situations may be simulated using DC and AC conduction modules, or Transient Magnetic module, depending on the problem formulation details. Electrostatic simulation in QuickField includes possibility to analyze the trajectories of the charged particles in the electric field.

The Electrostatic module can be used to design and analyze insulation systems, cables and capacitors, electronic tubes, high-voltage equipment. It is also used for EMC compatibility, biomedical researches, and variety of other applications.

Starting from version 6.0 Electrostatic analysis may be performed in plane-parallel, axisymmetric and 3D extrusion formulations. Starting from the version 6.1 3D analysis capabilities are expanded by the possibility to import 3D geometries from CAD systems in STEP format.

Electrostatic module features:

l Anisotropic permittivity

l Distributed and concentrated charges

l Floating conductors

l Dirichlet or Neumann boundary conditions

l Results: Voltage, electric field, electric displacement, capacitance, electric gradients, forces, torques and other integral quantities, particles trajectories

l Couplings: the electric forces can be used for stress analysis on any existing part (electro-structural coupling)

**DC Conduction**

The DC conduction (current flow) module allows to simulate DC current distribution in conducting media. In QuickField DC Conduction module the currents may be induced by voltages applied to conductors, or the known current density on the region boundaries. The DC Conduction analysis module complements other types of electrical field analysis, available in QuickField - Electrostatic and AC Conduction.

The DC conduction module can be used to design and analyze variety of conductive systems such as ground connectors, PCB, biological objects in biomedical researches, and others.

Features of the DC Conduction module:

l Anisotropic conductivity

l Voltage and current density sources

l Dirichlet or Neumann boundary conditions

l Results: Voltage, current density, electric field, power losses, electric current through a surface, and other integral quantities

l Couplings: power losses can be used as heat sources (Joule heating) for thermal analysis (electro-thermal coupling)

**AC Conduction**

The AC Conduction module can be used to analyze electric field caused by time-harmonic voltages and currents on the region boundaries. The dielectric media is assumed to be non-ideal with a small but non-zero electric conductivity. Generally the quantities of interest in AC Conduction analysis are voltages, active and reactive currents, electric fields, Joule losses, capacitances, and electric forces. The AC Conduction analysis module complements other types of electrical field analysis, available in QuickField - Electrostatic and DC Conduction, taking into account both resistive and capacitive effects.

The AC Conduction module can be used to design and analyze variety of conductive systems such as capacitors, insulation systems cables, and in other technical applications.

Features of the AC Conduction module:

l Anisotropic conductivity

l Anisotropic permittivity

l Voltage and current density sources

l Dirichlet or Neumann boundary conditions

l Results: voltages, electric fields, conductive and reactive (displacement) current densities, flux densities (electric displacements), Joule losses, self and mutual capacitances, forces, torques, and electric energy

l Couplings: power losses can be used as heat sources (Joule heating) for thermal analysis (electro-thermal coupling). Electric forces can be used for stress analysis (electro-structural coupling)

**Transient Electric Field**

The Transient Electric module can be used to study the field distribution in objects subjected to pulse sources, e.g., lightning-induced overvoltages. It may also be applied to design modern insulation constructions, which include nonlinear field equalizing elements, varistor overvoltage protection, and other applications, which involve zinc oxide varistors, semiconductive ceramics, and similar materials.

Features of the Transient Electric module:

l Anisotropic or nonlinear conductivity

l Anisotropic or nonlinear permittivity

l Voltage and current density sources as a function of time

l Dirichlet or Neumann boundary conditions

l Results: voltage, electric field, conduction and displacement current density, ohmic and reactive power and losses, forces and torques.

**Thermal and Stress analysis**

**Heat transfer**

The Heat Transfer module is used to analyze the temperature distribution in static and transient heat transfer processes. The heat sources in the Heat Transfer module can be specified directly and/or imported from other QuickField problems (coupled problems) as Joule Losses.

The Heat Transfer module can be used to design and analyze many different electrical and mechanical systems.

Features of the Heat Transfer module:

l Steady-state or transient formulation with arbitrary initial field distribution, nonlinear specific heat and flexible time parameters

l Nonlinear or anisotropic properties

l Distributed and concentrated heat sources

l Heat sources as a function of temperature

l Heat sources generated by electric power losses

l Boundary temperature and heat fluxes

l Boundary conditions with convective/radiative terms

l Results: temperature, heat flux, thermal gradients, total heat loss on any given part, and other integral quantities

l Couplings: the resulting temperatures can be used for thermal stress analysis in both steady-state and transient cases. Transient heat transfer problem may be based on the results of other steady-state or transient problem.

**Stress analysis**

The Stress analysis module allows calculation of the mechanical stresses, strains and deformations. The mechanical loads in the Stress Analysis module can be specified directly and/or imported from other QuickField problems as electromagnetic forces or heat loads. This type of analysis in QuickField is often performed as a final part of more complicated multi-field analysis of electromechanical devices.

Features of the Stress Analysis module:

l Plane stress, plane strain, axisymmetric stress problems

l Anisotropic elastic properties

l Distributed and concentrated loadings

l Thermal stresses, magnetic and electric forces

l Various support conditions

l Results: displacements, stress components, principal stresses, Von Mises, Treska, Mohr-Coulomb and Drucker-Prager criteria

**Multi field coupling**

QuickField is capable of multi-physics analysis, where different field problems should be simulated together and the results of one analysis used as input data of other one. This second problem has to be defined on the same geometry model, and may take into account the calculated loads or field source distribution, as well as other manually defined loads and boundary conditions, usual for this type of field analysis.

You can combine several coupling types in one problem. E.g., after calculating currents distribution, electrostatic and magnetic fields as separate problems based on the same model file, you can calculate temperature distribution from Joule heat and then find stresses caused by temperature, magnetic and electric forces at together.

**Electric circuit**

AC and Transient magnetic problems in QuickField may be defined with the external electric circuits connected to blocks of the field model. These formulations are suitable to model electromagnetic devices, like motors with complex winding scheme, transformers with combined load as well as the circuit problems without field analysis involved.

Features of the electric circuit module

l Passive (R,L,C) and active (U,I) elements;

l Loads: constant, sinusoidal and complex pulse shape sources (you can use formulas to describe the electric source parameters);

l Results: voltage, current and impedance for each element. Current and voltage time plot.