Winding Body

© 2004 ANSYS, Inc.

ANSYS, Inc. Proprietary

© 2004 ANSYS, Inc.

Release 9.0 Preview 2


Objectives

• Provide full featured low frequency (LF) simulation tools in

Workbench

• Expose simulation tools for LF Emag over several release cycles

• Make Emag simulation easy to use!

• Provide advanced tools to simplify day-to-day simulation tasks

• Accessed with ANSYS Emag (core or enabled task) or

ANSYS Multiphysics license key.


© 2004 ANSYS, Inc.

Low Frequency Emag at Release 9.0

• Target simulation: 3-D Magnetostatics

• Target market

– Solenoid actuators

– Permanent magnet devices

– Sensors

– Rotating Electric machines

• Synchronous machines

• DC machines

• Permanent magnet machines


© 2004 ANSYS, Inc.

Low Frequency Emag at Release 9.0

• Key feature support

– 3-D Magnetostatics simulation

– Winding editor in DM to easily create complex windings for rotating machines

– Automated computations of force, torque, inductance, and coil flux linkage.

– Support solid and stranded (wound) conductors

– Easily set up simulations to compute results as a function of current, stroke, or rotor angle.

– Easily “encase” bodies in a field domain (Air) for quick model set-up

– Fast and accurate solutions using state-of-art finite element solver technology


© 2004 ANSYS, Inc.

© 2004 ANSYS, Inc.


Winding Body

Winding bodies can be used to represent wound coils for source excitation. They are defined from line bodies. The advantage of these bodies is that they are not

3-D CAD objects, and hence simplify modeling/meshing of winding structures.

© 2004 ANSYS, Inc.

Tangent orientation vector (blue arrow) defines current direction. Cross-section can be displayed

A line body can be promoted to a winding body.

Turns and cross-section dimensions are entered


Winding Tool

• The Winding Tool in DM is used to conveniently create “Winding” bodies for coil windings. Upon attach to Simulation, these bodies are assigned as Conductor bodies.

• Ideal tool for quickly generating coils for rotating electric machines

• A details view is used for geometric placement

• The winding tool is used for specifying winding patterns and coil details

– Create in DM using Worksheet

– Import/Export from a Winding Table text file


© 2004 ANSYS, Inc.

39 Pole PM Machine

3-Phase Winding, 13 coils per phase

© 2004 ANSYS, Inc.


Winding Table

Winding Table feature for automatically creating winding bodies

© 2004 ANSYS, Inc.

(Continued)


39 Pole PM Machine

Coils modeled as Line Bodies

Coil model only

© 2004 ANSYS, Inc.

Complete model with coils


39 Pole PM Machine – Skewed Stator

Coils modeled as Line Bodies

Coil model with skew option

© 2004 ANSYS, Inc.

Complete model with coils


Winding options

Coils may have different radii between IN slot and OUT slot. You may

Stack multiple coils in a slot


© 2004 ANSYS, Inc.

Clash Detection

Winding Editor automatically detects if the coil interferes (clashes) with the Rotor and warns the user


© 2004 ANSYS, Inc.

Winding Bodies Transferred to

Simulation

Winding bodies are automatically assigned to conductor bodies. From the Winding Tool, each Phase Winding is assigned as a unique conductor.

© 2004 ANSYS, Inc.

Conductors can be assigned currents and a phase angle. For this example, 13 winding bodies are grouped into each Conductor for the 3-phase system.


© 2004 ANSYS, Inc.


Air Gap Sizing

Under Advanced Control in the Mesh Detail, assign a gap distance. Following this, select “Create gap sizes” to automatically locate face pairs.

Gap size face pairs are identified for easy verification. Gap aspect ratio and gap mesh density may be selected per pair.


© 2004 ANSYS, Inc.

Air Gap Sizing

© 2004 ANSYS, Inc.

Mesh without gap sizing

Mesh with gap sizing


Simulation Tools Layout

Electromagnetic Toolbar

Simulation Environment

• Emag boundary conditions

• Conductor source excitation

Solution results

• Field, force, torque, inductance,

• Flux linkage


© 2004 ANSYS, Inc.

Conductor Objects

Conductor object : Identifies conductors for excitation, inductance, and postprocessing. Can be scoped to solid bodies (solid conductors), or winding bodies

(wound coils)

Excitation: Tagged to Conductor. Supports voltage and current loading for soild conductors, and current for winding bodies


© 2004 ANSYS, Inc.

Magnetic Field, Flux Density, Forces

© 2004 ANSYS, Inc.


Vector & Contour Plots

Vector / Contour is selected in the

Solution objects “Definition”

© 2004 ANSYS, Inc.


Coil Inductance and Flux Linkages

Compute self and mutual inductance. Compute coil flux linkages

© 2004 ANSYS, Inc.


Material Property Support

• Soft materials (steel, iron, etc.)

– Constant (isotropic)

– Laminated (orthotropic)

– Linear/nonlinear (single B-H curve)

• Hard materials (NdFeB, SmCo, Alnico)

– Linear

– Nonlinear


© 2004 ANSYS, Inc.

Material Properties – BH Curves

© 2004 ANSYS, Inc.


Material Properties - Permanent

Magnets

Coordinate systems are used to align the polarization axis of a magnet. The Coordinate

System is then assigned to the part in the Details view. Use the X-direction to align the North

Pole of the magnet. Cartesian and Radial

Magnetization are supported.


© 2004 ANSYS, Inc.

© 2004 ANSYS, Inc.

Robust Design


New Features in the 9.0 Release

Preview 2 Overview

© 2004 ANSYS, Inc.

• GUI Structure

• Parameterize DFSS Results

• New Robust Design* View

• Optimize DFSS Results

• New Trade-Off Study

• 2D Analysis for DXVT

• Additional Contact Support for DXVT

• RSX File Viewing

*Name may change



GUI Structure

Charts and Tables for DFSS are separate

© 2004 ANSYS, Inc.



GUI Structure

Separate DFSS Charts Page

New Shannon Entropy measure for robustness.

© 2004 ANSYS, Inc.



GUI Structure

Nonlinear Probability Axes

CDF Plot Y-Axis can be scaled as

Empirical, Gaussian, Log-Normal,

Weibull, and Exponential


© 2004 ANSYS, Inc.


GUI Structure

Separate DFSS Table Page

Same statistics showing up

Sigma-Level in Tables

Customize

Tables

(add, delete)


© 2004 ANSYS, Inc.


Parameterize DFSS Results

New View

“Robust Design” showing up

New DFSS

Parameters showing up in Parameter

View


© 2004 ANSYS, Inc.


Optimize DFSS results

1

2

1.

Design Variables: Useable for Robust Design

Optimization

2.

Random Variables: Uncontrollable – used to obtain DFSS results

3.

DFSS Optimization Variables – Used to obtain a “Robust Design”

3


© 2004 ANSYS, Inc.


Optimize DFSS results

Same optimization functionality as for GDS


© 2004 ANSYS, Inc.


New Trade-Off Study

© 2004 ANSYS, Inc.

Mouse-Over

Results

Pareto Front for Conflicting

Goals

Infeasible Points in

Pareto Front



New Trade-Off Study

3D view of Tradeoff

© 2004 ANSYS, Inc.


© 2004 ANSYS, Inc.



2D Support

• Allows Variational analysis of 2D

Simulation studies to include:

– Axisymmetric

– Plane Strain

– Plane Stress

© 2004 ANSYS, Inc.



Face/Edge Contact

© 2004 ANSYS, Inc.



Edge/Edge Contact

© 2004 ANSYS, Inc.



.rsx File Viewing

• .

rsx File Viewing

– Allows user to view variational results including

• ANSYS Environment VT analysis

• 3 rd Party Variational Applications

© 2004 ANSYS, Inc.



.rsx File Viewing

Insert a new result item

Change the type, scoping, orientation, or search criteria on the fly.


© 2004 ANSYS, Inc.

© 2004 ANSYS, Inc.

Preview 2

July 27, 2004


2D Simulation

• Plane Stress/Strain and Axisymmetry

• Includes:

– Contact

– Stress, Thermal,

Modal, Harmonic,

Shape

– All existing applicable loads

(force, moment, pressure, etc.)

© 2004 ANSYS, Inc.


Beam Stress Tool

• Scoping to line bodies specified at tool

• Calculates stresses:

– Direct

– Min/Max Bending

– Min/Max Combined

© 2004 ANSYS, Inc.


Contact Enhancements

• Contact reaction output can be requested in a local coordinate system

• Contact reactions can be parameters

• Multiple selection support for “Flip

Contact/Target”

• Scoping by Named Selections for

Contact Regions


© 2004 ANSYS, Inc.


• Penalty based surface body edge contact that includes stiffness for rotational DOF

• Save/Load contact region settings

• Reset to default options

New at Preview 2


© 2004 ANSYS, Inc.


• Options for collecting topologies for same body pairs

• Option to merge individual contacts for same body pair

(using multi select)

New at Preview 2


© 2004 ANSYS, Inc.

Coordinate Systems

• Cylindrical coordinate system applicable to loads (forces, moments) and specified displacements

• Worksheet view at coordinate system group to summarize all systems

• User can specify the coordinate system number in the ANSYS input file

© 2004 ANSYS, Inc.

New at Preview 2


Arbitrary Pick Location

• Applicable to coordinate systems, remote force, and remote mass

New at Preview 2


© 2004 ANSYS, Inc.

Command Objects

• Can be inserted under Contact

Regions and Bodies

– Body: Allow specifying material props not available in WB

– Contact: Allows user to change contact options not covered in native

WB

• Contents are more independent of suppression and updates

© 2004 ANSYS, Inc.


Command Objects

• Input arguments available:

– Allows specifying ARG1 thru ARG9

– Inputs can be parameterized

• Can be renamed based on definition (renames to name of macro)

© 2004 ANSYS, Inc.


Command Objects

New at Preview 2

• Output images from ANSYS execution can be included


© 2004 ANSYS, Inc.

Command Objects

• ANSYS images inside WB

New at Preview 2


© 2004 ANSYS, Inc.

Miscellaneous

• Fixed large memory leak during “Get

Results” for Remote solving (Included in 8.1

SP1)

• Added option for adaptive meshing aggressiveness

• Local coordinate system support for inertial loads (acceleration, rotational velocity)

• Allow user to specify a uniform temperature for thermal expansion analysis (not necessary to solve thermal analysis if temperature is constant)

© 2004 ANSYS, Inc.


Miscellaneous

• Report the body on which the max and min of a result occurs on

• Allow Principal stress/strain and total deformation results in a harmonic analysis

• Direct creation of a Selection

Group from selected bodies in the tree

© 2004 ANSYS, Inc.


Miscellaneous

• Annotation not displayed if >20 objects are selected

• Number of processors to use under solution process settings

• Custom deformation scale factor

New at Preview 2

Type custom value into dropdown box


© 2004 ANSYS, Inc.

Multiple Load Steps

• Multiple step simulations are now possible

• User interface is preliminary and will change (!)

• Environment specification as

“Sequence” including number of steps

New at Preview 2


© 2004 ANSYS, Inc.


• Loads values enter in table from worksheet view

© 2004 ANSYS, Inc.



• Current applicable loads:

– Fixed support

– Pressure

– Moment

– Pretension Bolt

New at Preview 2


© 2004 ANSYS, Inc.


• Pretension loads:

– Force

– Locked

– Displacement

– Open

New at Preview 2


© 2004 ANSYS, Inc.


New at Preview 2

© 2004 ANSYS, Inc.



• Results defined by step

Input

Output

New at Preview 2


© 2004 ANSYS, Inc.

Engineering Data

What is it?

– Repository of all data previously accessed via “Engineering

Data” folder of Design Simulation

– A place for engineering data that can be accessed by all

Workbench modules

– Materials and Convections at 9.0

– Future

• Beam/Shell section libraries, functions for loads, spectra etc. in future

• Expansion to temperature dependent properties as well as various nonlinear material models


© 2004 ANSYS, Inc.


Workbench Module

New at Preview 2

Container for project materials and convections

Individual properties grouped by physics

© 2004 ANSYS, Inc.

Thumbnails of properties curves, click to enter, click toolbar button to close



New at Preview 2

© 2004 ANSYS, Inc.

Engineering Data folder eliminated Accessible from simulation toolbar or details of part body

Options for new, import, and edit



Importing material to project from library

New at Preview 2


© 2004 ANSYS, Inc.


• Adding new property details by selecting from an alphabetical list

© 2004 ANSYS, Inc.



• Specifying property details

Right Mouse Button

Table data entry

© 2004 ANSYS, Inc.

New at Preview 2



9.0 Scope

– Multiple material libraries

– Structural / Thermal properties needed for simulation

– EMAG properties including B-H curves

Upcoming Features

– Convection data

– Parameterize tabular properties for DX

– Curve fit capability to determine coefficients for hyperelastic materials


© 2004 ANSYS, Inc.

Material Nonlinearity Switch

• Able to choose if material nonlinearities are ignored on a per body basis (more control of material behavior)

– Structural: Ignores plasticity

– Thermal: Ignores temperature dependency

– Emag: Ignores BH curve

© 2004 ANSYS, Inc.


Fatigue Strain Life Simulation

• Strain life theory option added to existing fatigue tool

• Material properties

– Strain life parameters (4)

– Cyclic stress/strain parameters (2)

New at Preview 2


© 2004 ANSYS, Inc.

Fatigue Strain Life Simulation

Strain life option set at the tool

Life and

Hysteresis results

Analysis type

FE input type

© 2004 ANSYS, Inc.

Representative graphs for chosen theory

New at Preview 2


Fatigue Strain Life Analysis

New at Preview 2

• Analysis types

– No mean correction

– Morrow Theory

• Input type option characterizes how FE results are to be used

– Local Elastic Analysis using Neuber method

– Local Elastic/Plastic Analysis (using FE stress)

– Local Elastic Analysis assuming local linear response


© 2004 ANSYS, Inc.

Fatigue Strain Life Analysis

Results

• Life

• Damage

• Hysteresis (local stress -strain response at critical location)

New at Preview 2


© 2004 ANSYS, Inc.

Summary

• Significant new features and capabilities

• Upcoming emphasis

– Multiple load steps

– Internal architecture for better mesh management and state management

• Possible upcoming availabilities

– Point probe

– Vector results display enhancements


© 2004 ANSYS, Inc.

© 2004 ANSYS, Inc.

July 27, 2004


DesignModeler Overview

• New features in DM 9.0

– 3D Curve Feature

– Planar Bodies

– Named Selection Base Object Support

– BladeGen and STEP Imports

– Winding Editor

– Pattern Feature

– Parameter Manager Functions

New in Preview 2

© 2004 ANSYS, Inc.


3D Curve Feature

You can now create 3D Curves from scratch scratch.

The vertices of the curves can be based on points selected in your model or from a coordinates file that defines the curve. Curves may be either open or closed.

© 2004 ANSYS, Inc.

Open Curve Closed Curve


Planar Bodies

Planar Bodies are flat surface bodies that lie in the

XYPlane. Creating planar bodies in DesignModeler allows you to perform 2D analysis in Workbench

Simulation.

Planar bodies are distinguished by their flat icon in the body branch of the tree.


© 2004 ANSYS, Inc.

Named Selection Base Objects

Named Selections can now be used as base objects for the four basic modeling features! The Named

Selection may contain either bodies, faces, edges, or points. The appropriate closed, open or point profiles will be extracted and used in the feature.


© 2004 ANSYS, Inc.

BladeGen Import

Now supported for the Import feature are CFX

BladeGen (.bgd) files. When importing BladeGen files, the flow path around the blade gets imported.

You may choose how many blade sets you wish to import or import them all.

© 2004 ANSYS, Inc.

One Blade Set All Blade Sets


Winding Editor

DesignModeler can create Winding Bodies to represent SOURC36 elements for emag simulation.

Winding Bodies may be promoted manually, or created via the Winding feature.


© 2004 ANSYS, Inc.

Winding Editor (continued)

Winding data may be read in from a text file or created from scratch using the Winding Editor.

© 2004 ANSYS, Inc.


Pattern Feature

The Pattern feature allows users to create linear, circular, and rectangular patterns of face sets and bodies.

© 2004 ANSYS, Inc.

Linear Circular Rectangular


Parameter Manager Functions

New Parameter Manager operations are supported in DesignModeler 9.0:

Trigonometric functions: sin(x), cos(x), tan(x), asin(x), acos(x), atan(x)

Exponentiation: x^y

Modulus: x % y

Natural log: ln(x)

Absolute value: abs(x)

Square root: sqrt(x)

Exponential e x : exp(x)


© 2004 ANSYS, Inc.

Winding Body

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