I just saw this really cool video about how researchers at Harvard University and the University of Buffalo looked at the stingray motion in water to think about a new design and propulsion system for submarines.
As you can see, they performed CFD simulation of the stingray motion. As soon as I saw the CFD animation I thought to myself — to do such a simulation, they need to have a good mesh morphing capability as the deformations are large. Why mesh morphing and not fast remeshing? Continue reading
In my July blog, I wondered if our customers considered moving forward with robust design practices. Since that time, I’ve found an increasing number of customers embracing and, more importantly, benefiting from these techniques. I’d like to give you a few examples that I think will appeal to you.
First of all, let’s look at ANSYS customer Brose, a tier-one supplier specializing in developing and manufacturing mechatronic systems and electric drives for automobile bodies and interiors. Every year Brose supplies millions of window regulators to many automobile manufacturers. As you can read in this article, Brose engineers adopted robust design practices using ANSYS Mechanical and Dynardo’s optiSLang software so they could ensure the robustness of their window mechanisms for a wide variety of car models and assembly conditions. Continue reading
Tomorrow, December 6, is an important day for many because it’s the final draw that will deliver the verdict on the eight football (soccer) groups that will kick off the 2014 FIFA World Cup — one of the most popular sporting events in the world, surpassed only by the Olympic Games. The 2014 World Cup will take place in Brazil from June 12 to July 1. This year will be special for me because, for the first time since 2002, Belgium has qualified. The team from Belgium includes a large number of players from prestigious European championships, so we have a fair chance to go quite far in the competition.
Whether the Belgian team will be a tough competitor or an easy seed could influence the rest of the World Cup. Unfortunately, it is very unlikely I will be able to support our Belgian Red Devils in person in Brazil next summer. But I’ll feel a part of the event thanks to the remarkable work done under the auspices of NOVACAP, Maruska Holanda and Pedro Almeida performed by Prof. Paulo de Mattos Pimenta and ESSS, the ANSYS channel partner in South America.
The Stadium That Will Host the 2014 World Cup
The National Stadium of Brasilia Mane Garrincha
Because a stadium is usually considered a prestigious landmark that is expected to last for decades, the quality of the design is crucial. The stadium must be able to withstand any situation it might experience during its lifetime such as heavy wind or cheering crowds. Continue reading
When I came from Microsoft to join ANSYS in April, I knew that ANSYS had been offering industry-leading engineering simulation software for more than four decades. But what I did not know was the amount of innovation and product technology that the company had lined up to deliver this year — and over the next several years. As a result of the work I’ve done with product development teams, I have grown even more passionate about ANSYS and what it has to offer the industry. I am, therefore, as proud as the rest of the team in announcing the release of our new product suite. ANSYS 15.0 builds upon the many years of leadership and includes dramatic upgrades in each of the key physics areas (electromagnetics, fluid dynamics, structures and embedded code). The combination of performance improvements, new solver capabilities, HPC scalability advances and pre-processing enhancements delivers insights into the most challenging product designs.
Because manmade materials are everywhere, ANSYS 15.0 provides structural analysts with advanced new functionality for simulating composites. What I find very exciting is the innovation built in to ensure efficiency throughout the entire modeling process. For example, users can apply submodeling techniques in the pre-processing workflow to create high-fidelity local results while employing a coarser model globally to reduce overall computation time. Continue reading
I knew it was just a matter of time before the technology took off. This week, Amazon founder and CEO Jeff Bezos announced that his online store is developing a drone-based delivery service.” The Amazon drones, called octopeters, are expected to deliver products to customers only a half-hour after they click the “buy” button.
This “science-fiction” approach to deliveries is still a few years away, but it’s no longer out of the range of possibilities. And won’t it be fun to watch a recently ordered item literally drop out of the sky?
The Amazon Drones
The Amazon drone is the size of a flat-screen monitor powered by electric motors. It follows GPS coordinates to drop items off at target locations. “The hard part here is putting in all the redundancy, all the reliability, all the systems you need to say, ‘Look, this thing can’t land on somebody’s head while they’re walking around their neighborhood,’” Bezos told CBS 60 Minutes.
And this is where ANSYS engineering simulation comes in. Today, product differentiation increasingly depends on embedded software, including complex control code and user-friendly human–machine interfaces — which in turn increases product complexity and risk. So the latest ANSYS capability optimizes embedded code. SCADE Suite offers the unique capability to graphically design, verify and automatically generate embedded software for smart product applications — like drones. Continue reading
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