Using SIWave and IcePak for PCB Thermal Analysis

The ANSYS SIwave is a dedicated tool that allows users to import electrical CAD (ECAD) data to predict electrical behavior and performance from all major ECAD packages like Cadence, Zuken, and Altium Designer. After the DCIR analysis has been performed in SIwave; IcePak will use the imported power maps for the board to perform a thermal analysis.

In this presentation, we analyzed the thermal behavior of a PCB using SIWave and IcePak. The result shows having a fan is mandatory to cool off the PCB.

How to Fix License Error, AEDT(hfss_solve and PPE error)

In this video we are going to show how to solve one of the most common license errors in AEDT (Ansys Electronic Desktop).

Error usually contains all or some part of below message:

Failed to enable feature using current license settings. Not that Pro, Premium, Enterprise licenses are available on your server. To use these licenses, check the corresponding UI option. For more information, search for “PPE” in the help documentation.

Failover feature ;HFSS solver’ specified in license preferences is not available. Request name hfss_solve does not exist in the licensing pool.

No such feature exists. Feature: hfss_solve License path: 1055@licenseserver_info_here: FlexNet Licensing error: -5,147

Solution, explained in the video: Please select the option “Use Electronics Pro, Premium, Enterprise product licensing” This is available in HFSS via “Tools — Options– General Options”.

Introduction to ANSYS nCode

Ansys nCode DesignLife works with Ansys Mechanical and Ansys LS-DYNA to reliably evaluate fatigue life. Using the results of finite element analysis (FEA) from Ansys Mechanical and Ansys LS-DYNA, it accumulates damage from repetitive loading to determine a product’s predicted life. You can quickly evaluate the effects of different materials and alternative geometries for new designs, and then optimize them for the product’s expected usage — long before the first prototype is built or expensive testing takes place.

With a new interface on the Ansys Workbench, you can enjoy a customized workflow that integrates with other products while staying within a single interface. You also have the flexibility to access your nCode user interface directly from Ansys Workbench. The ease-of-use makes the power of nCode DesignLife even easier to realize.

In the video below, you will learn how to run a fatigue analysis in both the Ansys Workbench and nCode user interfaces.

 

Tire Pressure Monitoring System (TPMS) Antenna Simulation and Calculating Link Budget

Tire Pressure Monitoring System (TPMS) is one of the important part in each and every car. It notifies the driver when the tire pressure is low to decrease chance of accident while it has some other benefits such as increasing fuel efficiency.

A whip antenna with Helix extension is used to study the TPMS. First antenna is designed, studied, and tuned using HFSS. Next a rim is created, and antenna is added to it. After studying the rim, antenna and tuning them, a box is added to the model to represent a car. Then, tuning is done one more time and the receiver antenna is added.

Coupling between different antennas are studied, results are shown as S parameter, Far Field Pattern and E field values. Results are in reasonable communication range. First two videos below explain more details.  Next, the results are exported from HFSS, used in EMIT and Link Budget is studied using BFSK. Third video below will explain more details about it.

 

 

Vector Hysteresis in Solenoid

Magnetic hysteresis occurs when an external magnetic field is applied to a ferromagnet such as iron and the atomic dipoles align themselves with it. Even when the field is removed, part of the alignment will be retained: the material has become magnetized. Once magnetized, the magnet will stay magnetized indefinitely. Maxwell by Ansys enables users to assign different materials. It also enables users to add customized B-H curve. In this video, we will be using this feature to study an armature and draw its hysteresis curve.

A geometry is imported, excitations are assigned, and we illustrate how to assign material and their B-H curve. In order to make simulation faster, a 30 degree(1/12) section of the armature is chosen. Picture below shows final B-H curve and the imported geometry.

 

Vector Hysteresis in Solenoid