Using Simcenter Amesim™ software, Simcenter Engineering experts and Honda set out to develop a new prediction technique and a new evaluation method for engine restart vibrations. Honda can now accurately predict the entire powertrain restart process, beginning with the vehicle controls signals causing a certain in-cylinder pressure, which then results into driveline torque, particular suspension and powertrain bushing interface forces and eventually body vibration shock.
One of these startups is Karma Automotive, a California-based carmaker that rose from the ashes (or rather assets) of Fisker Automotive in 2014. In the resurrection process, Karma managed to preserve the good and overcome the bad: they retained the beautiful Italian design of their cars, which held a lot of appeal to their customers, but significantly upgraded the technology. The result is a luxury electric hybrid sedan that maintains much of the original exterior and interior of the Fisker Karma, but incorporates an A123 battery, charger and electrical controls. It is “the car you drive when you want to be seen,” says Bob Kruse, chief technical officer of Karma Automotive.
The world’s largest and most powerful space science telescope is finally scheduled for launch, on Christmas Eve. The James Webb Space Telescope (JWST) has been in the works for decades, and its gold-plated, 21-foot mirror is capable of exploring much farther out into space than its predecessor, the famous Hubble Space Telescope. After many delays and years of waiting, for many, it seems almost unbelievable that it’s finally about to happen.
The same applies for durability engineers. Technology evolves so quickly that holding on to traditional processes and methodologies actually equals standing still. I hear you thinking: “I’m doing well, my business is stable.” But can you keep up? Your customers are getting more demanding, and your competitors are always close. It requires an effort to keep moving forward, innovate, and search new solutions or methodologies. But it pays off!
Today, vehicle electrification represents one of the major pillars to help reduce the overall greenhouse gas emissions from human activity. From the early days, there’s been a lot of effort to reduce the overall cost of the battery pack and increase its energy density. Above all, this was essential to offer commercially competitive electric vehicles (xEVs), compared to conventional internal combustion engine (ICE)-based vehicles. It was critical to reduce the consumer’s range anxiety, or in simple terms, remove the fear of being flat in the middle of the Mojave Desert.
Hydrogen is the most abundant chemical substance in the universe, constituting roughly 75% of all normal matter. Our own sun is 75% Hydrogen and 25% helium. Hydrogen is about three times as energy-dense as natural gas (which is principally methane) and more than twice as energy-dense as gasoline. Burning hydrogen is much cleaner than burning hydrocarbons. When mixed with pure oxygen it only produces water as a by-product of combustion.
Mobility electrification is not a trend. It is a fact. Most OEMs are already planning the retirement of their combustion-engine fleets. But with electrification we generally associate Li-ion batteries and a lot of inherent challenges. Rare materials, range anxiety, lack of charging stations, battery safety, poor recycling possibilities are some of them. Although extensive research is being conducted to solve these challenges, an alternative is being considered: hydrogen fuel cell vehicles. In this article we discuss how simulation can help OEMs & suppliers virtually design and certify the composite pressure vessel used for hydrogen storage.
The engineers at engineering consultancy R&D CFD are accustomed to applying CFD simulation to the challenges of Internal Combustion Engine (ICE) design. A recent project called on them to apply their analysis techniques to a different type of “ICE”--ICE cream. Their approach, however, was the same—using Simcenter STAR-CCM+ Multiphysics CFD software allowed the engineers to simulate 2000 variegator design variants in 17 days, and then optimize the design of the feeding chamber to guarantee that the final product would have the desired home-made, variegated appearance each time.
What are transient thermal measurements and structure functions, their advantages, and how we use them tcalibrate and improve our semiconductor thermal models, Simcenter Flotherm is a unique combined test and simulation solution for automatic calibration of semiconductor package thermal models that maximizes simulation accuracy. This helps engineers to better optimize electronics thermal design for reliability, reducing field failures, and to reduce overdesign-linked costs.
Simcenter solutions offer an integrated approach to test preparation, modal testing, modal analysis, numerical model correlation, model updating, and model use. from impact testing on small structures to large scale campaigns using hundreds of measurement channels, puts a tradition of cutting-edge expertise at your fingertips as you maximize testing efficiency.
Every human being is innately different and so is our cough. 7.5 billion people. 7.5 billion different coughs. There’s been plenty of research into the human cough. Enough, in fact, to tell us what an average cough from an adult should look like. It’s this average cough that’ll help us uncover some key insights behind how cough droplets travel and move in an aircraft cabin.
Simcenter Testlab Interior Sound Source Localization is a complete solution for quick and accurate identification and ranking of sound sources in highly complex interiors. Siemens Digital Industries Software has designed a number of cutting edge sound source localization solutions to increase overall testing productivity. Finding the root cause of noise through transfer path analysis helps you identify the main sound sources and transfer paths, both airborne and structure- borne.
In the case of the power adapters that NXP Semiconductors’ Smart Power Division are developing thermal considerations have really come to the fore, driven by the trends we see in mobile power adaptors, which are getting smaller and have a higher output power. Thermal limits are now constraining all aspects of the design.
Karma Automotive established a strategic partnership with Simcenter Engineering and Consulting services to meet NVH performance targets and implement state-of-the-art NVH testing and simulation processes. Simcenter™ software uniquely combines system simulation, 3D CAE and test to help you predict performance across all critical attributes earlier and throughout the entire product lifecycle.
John Wilson, technical marketing engineer at Mentor, a Siemens Business, explains how junction temperatures have a direct correlation to product reliability and performance. Using tools such as Simcenter™ T3STER™ and Simcenter™ Flotherm™ enable users to tackle the challenge of designing for reliability without the need for prototyping.
Simcenter Flotherm - The goal of electronics thermal design is to accurately predict component junction temperatures to ensure that they are within specification. CFD allowed designers to predict the flow of cooling air, and include 3D thermal simulations of the board and components, increasing the need for more accurate component level modeling.
Revolutionizing productivity, Electra Meccanica moved quickly, transforming a napkin sketch into a digital NX™ software design in a matter of days, then using Simcenter™ software to optimize and validate the performance of the all-electric SOLO. Finally, using NX CAM and 3D printing, Electra Meccanica built its dream car.
For its first datacenter in Prineville, Oregon, Facebook set out to significantly improve its power efficiency, cost, reliability, serviceability and environmental footprint. To this end, a holistic approach was used to redesign many dimensions of the datacenter and servers. This white paper1 focuses on the Facebook server design, combining aspects of power, motherboard, thermal and mechanical design.
More than just a CFD code, STAR-CCM+ is a complete multiphysics toolbox, able to solve flow, thermal and stress problems involving multiple phases. From liquid jets, to water ingression, STAR-CCM+ allows you to simulate any cooling strategy that you can define and even the effect of what happens when those strategies go wrong.
The first is a hybrid approach, integrating test and simulation for realistic road-load prediction, even for loads that cannot be measured. And the second is a digital road approach, running a comprehensive virtual model on a digital track when test data is unavailable. Additionally, it considers new emerging technologies, such as composites and additive manufacturing.
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