Ansys Maxwell Motor Modeling

by Mai Vang, Marketing Director | Jun 27, 2023

Ansys Maxwell Motor Modeling

one-day course

This 1-day course provides an introduction to modeling motors using Ansys RMxprt and Ansys Maxwell.

During the course, students will build hands-on skills by setting up and solving a variety of simulation models during the workshop sections.

Prerequisites for this course are DRD’s Introduction to Maxwell course and practice gaining proficiency with Maxwell. DRD recommends that students who do not have those prerequisites delay attending this course until they attain them. This course does not assume any experience with RMxprt.

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Section 1: Cogging Torque

Workshop 1 – Cogging Torque Calculation

This workshop will discuss how to use ANSYS Maxwell to calculate the cogging torque in an example 3-phase permanent magnet machine. Both a parametric static and pseudo-static transient methodology will be explored.

Section 2: Motor Power Balance

Workshop 2 – Motor Losses

This workshop explores an example induction motor to understand power loss prediction in Maxwell. It will show how to obtain these quantities during postprocessing, how to validate them through checking the power balance, and how to improve simulation accuracy on these results. RMxprt will be used to both analyze the motor and to generate Maxwell 2D and 3D models of the design.

Section 3: Demagnetization

Workshop 3 – Demagnetization Due to Short Circuit

This workshop will discuss how to use Ansys Maxwell to study the variation of Permanent Magnet Rotating Machine performances due to short circuit and related high value external fields and permanent magnets demagnetization.

Section 4: Machine Toolkit

Workshop 4 – Using the Machine Toolkit on a PMSM Model

This workshop starts with an existing 3-phase permanent magnet synchronous machine model that’s set up to solve one operating point. The user will then use the Machine Toolkit extension to define the Design of Experiments runs which will populate the full operating space. Output maps such as efficiency, losses from different sources, torque vs. speed, and voltage/current in the d-q frame can be obtained for this design after running the DOE that the toolkit automatically creates.

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HFSS SBR+ Antenna Placement Design

by Mai Vang, Marketing Director | Jun 27, 2023

HFSS SBR+ Antenna Placement Design

one-day course

This course provides workshops demonstrating the Shooting Bouncing Ray (SBR+) solver and antenna placement, using the ANSYS HFSS environment of the ANSYS Electronics Desktop (AEDT) Suite. This tool is included in the ANSYS HFSS Premium and ANSYS Electronics Enterprise licenses.

The course focuses on utilizing the SBR+ solution design type and performing antenna placement analysis. Within this course, one will analyze the electrical behavior of an antenna near a large 3D component (such as the body of a car) and understand how SBR+ utilizes less computational resources for more efficient simulations. In addition, predicting the coupling between two or more antennas while employing the SBR+ solver and large 3D components is demonstrated.

Most workshops begin with projects where CAD geometry has already been prepared or is drawn in the tool as part of the exercise. DRD encourages students to bring ACIS files with them to the training (preferably from their workplace) if they desire to test their own antenna geometry.

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Module 1: Introduction & 3D Component

Workshop 1.1 — PIFA Antenna 3D Component

This workshop demonstrates how HFSS can be used to design and analyze an 800 MHz PIFA (planar inverted-F antenna) element, including the chassis that makes up this entire antenna module.

Module 2: Antenna Placement

Workshop 2.1 — SBR+ Platform Integration

This workshop uses HFSS and SBR+ (Shooting Bouncing Ray) to analyze and predict the performance of an antenna integrated on to an electrically large platform, a car body.

Workshop 2.2 — Side Mirror Near Field Link

This workshop uses HFSS and SBR+ solution type design to analyze and predict the performance of an antenna linked to a car body.

Module 3: Antenna Coupling

Workshop 3.1 — Far Field Antenna to Antenna Coupling

This workshop demonstrates how an SBR+ design type can be used in HFSS to simulate the coupling between two different antennas.

Module 4: Car Garage Visual Ray Tracing (VRT)

Workshop 4.1 — Vehicle to Home Communication with SBR+

This workshop analyzes coupling between a vehicle mounted antenna and a home Wi-Fi antenna.

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HFSS SBR+ Antenna Placement Design

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Ansys HFSS Antenna Design

by Mai Vang, Marketing Director | Jun 23, 2023

Ansys HFSS Antenna Design

two-day course

This course provides workshops, emphasizing on antennas, using the ANSYS HFSS environment of the ANSYS Electronics Desktop (AEDT) Suite. The general problem addressed is that of the high frequency electromagnetic field and antenna analysis.

The course focuses on the set-up and analysis of antenna simulations via the HFSS user interface. This tool is included in the ANSYS HFSS Premium and ANSYS Electronics Enterprise licenses. Within this interface, one can create CAD geometry of Antennas to analyze the near/far fields, surface currents, impedance, and S-parameters. One can also use the Antenna Design Toolkit (ATK) wizard to create common antenna geometry for ease of simulation design.

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Module 1: Far and Near Fields

Workshop 1.1 — Conical Spiral Antenna with HFSS Antenna Toolkit

This workshop synthesizes a design for a conical spiral antenna using the ACT Extension HFSS Antenna Toolkit and generates the simulation reports and plots.

Workshop 1.2 — Dipole Antenna Far Fields

This workshop starts with a new HFSS project and HFSS design. A dipole antenna is chosen from the Component Library as a starting point for the geometry and the excitation.

Workshop 1.3 — Horn Antenna Far Field Components

This workshop starts with an HFSS horn design and an incomplete setup. The initial orientation of the horn, relative to the coordinates, has the X-axis at boresight.

Workshop 1.4 — Crossed Dipole Antenna Near Fields

This workshop starts with two crossed dipole antennas. After initial simulation, and viewing the results, several near field quantities are plotted and exported.

Module 2: Sources and Field Quantities

Workshop 2.1 — Crossed Dipole Antenna Sources

This workshop starts with two crossed dipole antennas and demonstrates how to plot far field using a far field infinite sphere setup.

Workshop 2.2 — Circularly Polarized Patch Antenna

This workshop focuses on Antenna post-processing such as radiation patterns and plotting 2D & 3D fields on Antenna geometry.

Workshop 2.3 — Circular Polarization Patch Advanced Field Quantities

This advanced workshop evaluates patch antenna S-parameters data, plotted solved fields, and pattern data.

Module 3: Boundaries

Workshop 3.1 — Patch Antenna Open Region Boundaries

This workshop demonstrates two approaches to creating open boundaries and gain insight about both approaches by seeing them applied to the same structure.

Workshop 3.2 — PIFA Boundaries: ABC PML FE-BI

This workshop demonstrates creating boundaries, such as Absorbing Boundary Condition (ABC), Perfectly Match Layer (PML), and Finite Element – Boundary Integral (FE-BI) for a Planar Inverted – F Antenna.

Module 4: Dynamic Link

Workshop 4.1 — Dynamic Link

This workshop demonstrates how to dynamically link an HFSS design into a circuit simulation, use the Smith Tool in circuit design to match the antenna using lumped components, and push excitations from the circuit design to the HFSS design.

Module 5: Optimization

Workshop 5.1 — Antenna Optimetrics

This workshop demonstrates how to set up a parametric study, optimize, and simulate the Analytic Derivatives of a probe-fed patch antenna.

Workshop 5.2 — OptiSLang Derivatives Optimization of PIFA

This workshop demonstrates the derivative-based optimizer to optimize a planar inverted-F antenna (PIFA) design.

Module 6: HFSS Integral Equation (IE)

Workshop 6.1 — HFSS IE Blade Antenna

This workshop demonstrates how to set up, simulate, and analyze an airplane-mounted plane (blade) antenna using the Integral Equation (IE) solver.

Module 7: Formulations

Workshop 7.1 — FE-BI Blade Antenna

This workshop sets up, simulates, and compares simulations of the airplane-wing mounted blade antenna. The large, flat geometry, representing an airplane fuselage, is simulated with both IE (Integral Equation) and SBR+ (Shooting Bouncing Rays).

Module 8: Hybrid Regions

Workshop 8.1 — Data Linked Simulation of a Reflector Antenna

This workshop will demonstrate near field simulation results from a horn antenna and will feed a reflector antenna through a data link while also comparing the result of the Integral Equation (IE) and Physical Optics (PO) solvers.

Workshop 8.2 — Hybrid FEM-FEBI Simulation of a Reflector Antenna

Workshop 8.3 — Hybrid FEM-FEBI Antenna Placement Study

This workshop will demonstrate radiation field results when using a Finite Element-Boundary Integral (FE-BI) region on the horn antenna and use a Integral Equation (IE) solver on the reflector.

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Ansys Mechanical Thermal Simulation

by Mai Vang, Marketing Director | Jun 22, 2023

Ansys Mechanical Thermal Simulation

One-day course

This course provides an introduction to thermal modeling capabilities in Ansys Mechanical. Ansys Mechanical handles conduction and radiation heat transfer including calculation of view factors for surface-to-surface radiation. Mechanical also handles convection heat transfer, primarily as a boundary condition based on a heat transfer coefficient and a bulk temperature. Material properties and heat transfer coefficients can be temperature-dependent.

This course is entirely workshop-based with no dedicated lecture component and takes place over a single day. The emphasis is placed on the creation and solution of practical thermal analyses rather than detailed presentation of heat transfer theory. The goal is to introduce the most important tools for heat transfer analysis and to show best practices for modeling common heat transfer problem types.

This is an advanced course, and attendees are expected to be comfortable with the basics of Ansys Workbench and Mechanical. It is recommended that attendees complete DRD’s Introduction to Ansys Mechanical course prior to attending this course. Engineers already proficient with Ansys Mechanical also have the course prerequisite.

Course Requirements:

Ansys Version used to create course content: 2023 R1
Ansys Version DRD instructor will use for the course: 2023 R1
Ansys Version(s) students may use for the course: 2023 R1

Registration for all classes will close 5 business days in advance of the class date.

Learn more: Agenda + Course Description

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On-Demand Course Recordings (Password Required)

Workshop 1 – Hazardous Material Cabinet Subjected to Steady Temperature Load

In this workshop we model steady-state heat transfer in a hazardous material enclosure. This simplified analysis incorporates convection with the environment as well as internal conduction in a multi-part assembly. We introduce techniques for estimating and assigning convection coefficients based on the temperature difference between the fluid and the convection surface. Temperature-dependent material properties are created and assigned.

Workshop 2 – Parallel Plates with Radiation Heat Transfer

In this workshop we introduce radiation heat transfer. We compare the results from using radiation boundary conditions in FEA with hand calculations for a case of two parallel plates of known temperature.

Workshop 3 – Hazardous Material Cabinet Thermal Analysis with Radiation

In this workshop we continue Workshop 1 by adding radiation to the model, which allows heat to be transferred to and from an internal cylinder containing hazardous materials.

Workshop 4 – Hazardous Material Cabinet Subjected to Fire

In this workshop we continue the analysis on the hazardous material cabinet, this time performing a transient thermal analysis in order to observe the temperatures of the materials after the exterior is exposed to fire.

Workshop 5 – Antenna Subjected to Solar Loads and Thermal Stress

In this workshop we model solar radiation using an MAPDL Commands object. We also defeature components that are not important to a thermal analysis, then map the results from the defeatured thermal model onto a full-featured structural model in order to perform a thermal stress analysis.

Workshop 6 – Heat Transfer Analysis of an Electronics Enclosure

In this workshop we demonstrate two uses of contact resistance: accounting for imperfect contact and modeling thin bodies with a specified resistance in the thickness direction.

Workshop 7 – Effect of Exhaust Radiation Shield on Windshield

In this workshop we examine how a radiation shield surrounding a high-temperature exhaust pipe affects a nearby windshield.

Workshop 8 – Thermal Analysis of Fuel Injection Nozzle with Fluid Flow

In this workshop we use Thermal Fluid elements to model fluid flow through a nozzle. The thermal analysis accounts for convection heat transfer between the fluid and the nozzle, as well as a specified mass flow rate of the fluid.

Workshop 9 – Heat Transfer in a Cabinet with Internal Convection

This workshop is designed to provide students with practice modeling assemblies. We read the assembly into Mechanical and perform static stress analysis using default bonded contact to hold the parts together. We then use model branching to make a new version of the model, which has no separation contact instead of bonded contact for some of the connections, and we compare the behavior of the models with bonded and no separation contact in the connections.

Workshop A – Radiation Heat Transfer from Exhaust Pipe to Gas Tank

In this appendix workshop, we give students the opportunity to practice setting up a heat transfer model without detailed instructions. The goal is to evaluate whether radiation from the exhaust pipe will bring the fuel tank to an unsafe temperature.

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Ansys Mechanical Fracture Mechanics

by Mai Vang, Marketing Director | Jun 22, 2023

Ansys Mechanical Fracture Mechanics

one-day course

Fracture mechanics allows engineers to analyze the integrity of a structural component, where traditional methods of stress analysis are not applicable. Cracks are sharp corners, and traditional finite element analysis does not provide accurate stress at a sharp corner, also known as a singularity. The primary questions engineers are trying to answer when performing a fracture analysis are:

Will a crack grow under these loading conditions?
Where will the crack grow?
How long will it take for a crack to grow until the part breaks?

This 1-day course will give attendees experience in setting up, solving and post-processing finite element models with cracks in structural components. Information, such as Stress Intensity Factors, SMART (Separating, Morphing and Adaptive Remeshing Technology) crack growth and techniques for creating cracks in the finite element model will be covered.

Prerequisites for this course are DRD’s Introduction to SpaceClaim for Mechanical and Introduction to Ansys Mechanical courses. DRD recommends that students who do not have these prerequisites delay attending the course until they attain them. This is a challenging course for proficient users.

View the Course Schedule / Enroll in Live Virtual Training

On-Demand Course Recordings (Password Required)

Chapter 1 – An Overview of Fracture Mechanics in Ansys

Workshop 1: Ansys Stress Intensity Factor Solution with a Simple Edge Crack Model

The objective of this workshop is to provide a simple basis for modeling cracks in Ansys Mechanical. The students start with a 2D plate structure and create an edge crack with the Pre-Meshed Crack capability. The student will then post-process fracture parameters, such as Stress Intensity Factor (SIF), and compare the output with a closed form solution found in many elementary fracture mechanics’ text.

The student is also introduced to residual strength curves, from both the fracture failure mode and the limit load failure mode. These curves help determine the first mode of failure for the structure.

Workshop 2: Calculation of Stress Intensity Factor at an Elliptical Crack

This workshop expands on the basic setup and output of the previous workshop, into a 3D model. Here, a welded pipe joint is subjected to pressure with a crack on the exterior of the pipe wall. The student will learn how to create an elliptical (or penny)-shaped crack without any prior geometry modification.

3D contours of Stress Intensity Factor are calculated for the initial case of crack size. Then, the student will modify the crack size definition, rerun the model, and compare the two solutions.

Workshop 3: Edge Cracked Plate VCCT Fracture Mechanics with Closed Form Solution

Like workshop 1, the objective of this workshop is to setup and solve a simple 3D edge cracked plate model under modeI loading. In this instance, the student will use the Virtual Crack Closure Technique. Also known as MCCI (Modified Crack Closure Integral), this method calculates a Strain Energy Release Rate (SERR) for the fracture parameter.

Students will then compare this with a closed form solution, as well as experiment with calculating a Stress Intensity Factor using Irwin’s equation.

Workshop 4: Calculation of Stress Intensity Factor and Energy Release Rate for a Double Cantilever Beam

Workshop 5: ANSYS VCCT Solution of a 4-Point Bend Test

Workshops 4 and 5 demonstrate other cases of setting up and solving simple stationary crack models in Ansys Mechanical. Workshop 4 has the student setup a double cantilever beam structure. Workshop 5 uses a 4-point bend structure. Both cases have simple closed form solutions to compare to that allow validation of Ansys fracture results with known solutions.

Chapter 2 – Model Crack Growth in Ansys

Workshop 6: Computing Crack Growth with ANSYS SIFs and the Paris Law on a 2D Pressure Vessel

The objective of this workshop is to provide the groundwork for crack growth analysis. In this workshop, students solve a 2D pressure vessel study for varying crack lengths using Ansys Mechanical with a parametric model.

The workshop then provides a basis for computing crack growth information using a spreadsheet, allows the student to experiment with the crack growth computation, and asks several engineering questions:

·         What crack length causes immediate fracture?
·         Is limit load exceeded?
·         Is the curve fit for crack growth adequate for small cracks?

Workshop 7: SMART Crack Growth on Intersecting Pipes

This workshop is the first of two workshops that demonstrate the use of SMART. Students will learn how to setup an automated crack growth analysis using the Semi-Elliptical Crack combined with SMART Crack Growth object. Detailed definition of the Paris Law material constants for crack growth is also covered.

Automated crack growth has a host of new results post-processing options for Crack Extension, Equivalent Stress Intensity Range and Cycles; students will work through these options as well.

Workshop 8: SMART Crack Growth on a Casting with a Thermal Gradient

In this workshop, students learn how to create a crack using a 3D surface representation of the crack surface. This is made possible via the Arbitrary Crack feature, which allows a complex, non-planar 3D surface to be used as a basis for generating a crack mesh.

Workshop 9: SMART Crack Growth on a Casting with an Initial Stress State

This workshop is a continuation of workshop 8, where students load a casting with a thermal gradient and grow a crack. In this workshop, an initial stress state is set up that includes this thermal gradient and bolt pretension. The initial stress state is passed to a downstream analysis where the cyclic load to grow the crack is pressure. SMART crack growth is used here; Ansys automatically handles this initial stress state each time the crack calculation is performed.

Chapter 3 – Modeling Adhesive Failure

Workshop 10: Adhesive Failure Modeling with Contact Debonding

This workshop demonstrates modeling failure of an adhesive layer via bonded contact. Students define a cohesive zone material model with properties for maximum normal stress and critical fracture energy. The benefit of this capability is that the adhesive layer does not need to be directly modeled. This is a huge benefit as the adhesive layer is typically much smaller in thickness compared to the parent parts bonded together. A secondary benefit is the mesh does not need to be the same on either side of the interface, as contact is used to initial tie the parent parts together.

Workshop 11: Adhesive Failure Modeling with Interface Delamination

This workshop demonstrates a second method to simulate interface failure; interface delamination. A similar material model is defined for this method. However, contact is not required for this capability. Instead, the mesh on both parent parts must be the same at the interface with the adhesive. This is accomplished through clever meshing or match mesh controls. The interface delamination capability also has another special use case: delamination modeling with composite models created in Ansys Composite PrepPost.

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