Hello all and happy Friday! My top engineering technology picks of the week include a personal, electric octodecacopter and this year’s Institution of Structural Engineers Supreme Award for the world’s only two-span suspension bridge in China. Have a great weekend!
If you are a regular reader of this blog, you may remember the post I wrote about witnessing simulation in action at the endurance race in Austin, TX. Since that great experience, I have been following the 2013 FIA World Endurance Championship in general, and the AF Corse team in particular (the AF Corse team races with Ferrari F458 cars). There is only one race left — the 6 Hours Endurance of Bahrain (Kingdom of Bahrain).
AF Corse won the 2012 FIA World Endurance Championship and is currently second in the 2013 season, just 8.5 points behind the leader. I will be following the next race on November 30th and be cheering for the team!
You may wonder, why? Am I an automotive sports enthusiast? Not really. Do I love the Ferrari F458 because I own one? Definitely not (not even on lease!). I am following the races and the Ferrari team because I am amazed at how they used CFD simulation to design the Ferrari F458. Now, we all know about using CFD for aerodynamic, engine cooling, etc. But something that amazed me is how they used CFD simulation to design the side rear view mirror. You may be thinking, of all the components, this one does not look very important for the aerodynamic of the car, so what is cool about that? Here is the story. Continue reading
Electric motors consume nearly half of all global energy, so the drives need to be highly efficient. Electric machines include materials that can vary drastically in price over a relatively short period of time due to market demands and a limited supply of the raw materials. Traction motors used in hybrid electric vehicles (HEV/EV) utilize rare earth permanent magnets. Changing a design parameter, such as the shape or size of the magnets, most likely will have consequences on performance such as a reduction in efficiency or will introduce a change in torque quality.
The modified design and the original design provided by Magna Electronics. The modification included the reduction of the magnet length and decrease of “V-angle” of the magnets.
Engineers who design interior permanent magnet (IPM) machines most often create a 2-D plot of the efficiency and torque of the machine versus its rotation speed, known as an efficiency map. The goal is to reduce the magnet size and maintain the maximum torque and efficiency for the entire speed and torque range. An efficiency map can be created by taking measurements in the test environment of the output torque, input power and output power. Of course, this means that the traction motor first must be designed and manufactured.
Also, at this late stage of the design cycle, making design changes to improve performance is costly and takes another round of prototyping. Consequently, IPM traction motor engineers utilize simulation tools that quickly, yet very accurately, predict the performance of the traction motor and drive product development. Engineers who are responsible for the electromagnetic design of IPM electric motors usually employ the finite element method (FEM).
ANSYS Advantage Volume VII Issue 3 is now available, and I am pleased to announce that the spotlight is on my area, turbomachinery (some call it rotating machinery). My industry colleagues at ANSYS and I contributed several overview articles that, I hope, explain the work we are doing to empower developers to design and build better, more energy efficient turbomachinery.
Of great interest to me are the customer contributions — for a number of reasons, including historical ones. I have worked in the business for so many years, and it is really gratifying to see how far the software and customers’ applications have advanced. The positive impact on new machinery development is amazing as well. Continue reading
This week is a short work week in the U.S. — due to the Thanksgiving holiday — so our list of ANSYS Webinars is a tad short. To make up for that, I thought I’d take the opportunity to point out some other on-demand webinars you might like to investigate. You’ll find those listed below. Just click on the titles.
For those of you in the U.S., have a wonderful Thanksgiving. I am personally thankful that you, our readers, take time out of you day to read our blog.
ANSYS Webinars This Week
Thermostat Macro in ANSYS Icepak
Wednesday, November 27, 2013
11:00 AM IST, 12:30 AM EST, 5:30 AM GMT (REGISTER)
For more than a decade, leading companies around the world have relied on ANSYS Icepak to provide robust and powerful computational fluid dynamics (CFD) solutions for electronics thermal management. ANSYS Icepak has the necessary capabilities to enable rapid model creation, meshing and analysis of complex electronic systems. In addition to the standard features and functionalities, ANSYS Icepak offers several additional capabilities via specialized sub-routines known as ‘macros’ for advanced modeling. Continue reading
Happy Friday, folks! This week’s top engineering technology articles include the new bendable, self-repairing LG smart phone and how the wine packaging industry is taking a step into the technological world. Enjoy!
Today, mobile, tactile and multi-touch human–machine interfaces (HMIs) are making their way into embedded displays in automotive, aerospace and defense, energy and other industrial domains. The code that controls them (along with the displays) can be easily generated and controlled graphically through mobile devices. And ANSYS is working on an app for that.
Before I get to those details, let me first provide some industry perspective. Aerospace, historically conservative given how aircraft programs have endured across many years of operation, has already embraced the move to mobility. From business jets to bigger commercial airplanes, and from the cabin to the cockpit, iPad and Android tablets are used for a variety of avionics applications. Some suppliers have selected Android as their platform of choice for tactile in-flight entertainment and connectivity systems.
Another example: some platform providers select a secure Google Android-based tablet computer to combine situational awareness with communications and control for unmanned avionics systems. In that case, the goal is to secure mobile tactical edge devices on ad-hoc networks, as well as mobile devices on commercial networks, by extending certified secure operating system features to Android. Continue reading
(Left to right) Dr. Amir Mirmiran, Dean, Dept. of Engineering; Dr. Stavros Georgakopoulos, Asst. Professor; Chuck Paglicco, ANSYS; Bob Helsby, ANSYS; Dr. Shekhar Bhansoli, Chairman, Dept. of ECE
Students in Florida International University’s (FIU) College of Engineering & Computing will be one step ahead of their future employment competition thanks to a new partnership with ANSYS that provides its robust electromagnetic simulation technology in the laboratory and classroom. By making commercial simulation technology available in an academic setting, FIU engineering students will become acquainted with sophisticated software that is widely deployed in the engineering universe, increasing their value as prospective employees. This partnership will also allow FIU faculty to conduct significant leading edge research in electrical engineering and gives ANSYS a seat on the department’s Industry Advisory Board.
Stavros Georgakopoulos, a professor in FIU’s Department of Electrical and Computer Engineering, has been using ANSYS software for more than a decade. Not only does he teach it in the classroom, but also takes advantage of the tools for university research projects to develop compact and reconfigurable antennas.
“Exposing my students to ANSYS in the classroom is beneficial for them because they will acquire a specific skill set that is highly sought after in the marketplace,” said Georgakopoulos. “It’s also a tremendous help for my research because it enables me to quickly and accurately design complex electronic devices and achieve optimal performance,” he said. Continue reading