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Siemens Releases Simcenter 3D 2021

Siemens Releases Simcenter 3D 2021

Siemens Digital Industries Software has announced the availability of the latest release of Simcenter 3D software, part of the Simcenter portfolio of simulation and test solutions. Simcenter 3D and the Simcenter portfolio are part of the Xcelerator portfolio, Siemens’ integrated portfolio of software, services and application development platform.

In the 2021 release, Simcenter 3D continues to further improve its powerful unified and shared engineering platform for all simulation disciplines to help users gain full value of the benefits that simulation provides in terms of cost, speed and impact to innovation. Introducing new enhancements to the AI (Artificial Intelligence) driven user experience, new simulation types as well as refinements in accuracy and enhanced performance speed, Simcenter 3D 2021 can help companies understand true performance of their designs early in their development process.

In many applications, product innovation includes the engineering of the advanced material used in them, which is why new materials are being introduced into the market at unprecedented speed. Cracking is a very important consideration for advanced materials, however micro and meso cracking in advanced materials is difficult to model with the finite element method. Simcenter 3D now includes full representative volume element (RVE) separation and 2D and 3D automatic insertion of cracks or cohesive zones in materials. Macro and microstructural models now allow for full mesh separation for a crack to propagate completely through a material.

“Simcenter Multimech allows us to model microstructural cracks and determine how they would affect the overall part,” states Neraj Jain, group leader in simulation and engineering at the DLR Department of Ceramic Composites and Structures. “Using this tool, we can actually see where a crack is developing, how the crack will change our material, and how it will affect the final microstructure of the material.”

New to Simcenter 3D is an auralization post-processing tool that allows users to listen to simulated pressure results to evaluate sound quality. This allows acoustics engineers to actually hear the noise produced from various vibrating components or products as opposed to having to visually evaluate through charts or graphs.

Simulation-driven design can drastically lower the time it takes to bring a product to market. For this reason, Simcenter 3D’s thermal analysis capabilities have been scaled into a vertical solution for mold designers and design engineers. The new NX Mold Cooling product uses Simcenter 3D technology to allow designers to rapidly set up and simulate the thermal performance of an injection mold insert directly in NX as they are designing the mold. This allows for easy and rapid thermal analysis of injection mold designs without having to wait for expert analyst feedback.

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Siemens: Breaking New Ground In Modernity

Siemens: Breaking New Ground In Modernity

Siemens PLM Software has helped global auto manufacturer, Hyundai Motor Company, reduce vehicle physical testing by 40 percent and optimise hybrid vehicle performance with the aid of Simcenter.

Korean Modernity

Over the last two centuries, mankind has dramatically evolved. And certainly, modern times have brought many benefits, including longer lives, comfort, communication means, traveling tools and much more. But at the same time, continuous population growth, industrialisation and globalisation have put enormous stress on the environment. Unfortunately, it was only in the last decades of the previous century that scientists started to share persuasive evidence that we are slowly but certainly causing irreparable damage to our planet. The current generation is the first in human history to consider how to balance technological advancement with low environmental impact. As a result, engineers are challenged to develop technologies that can satisfy operational and consumer requirements while also meeting the demands for low energy consumption and emissions.

To fulfill those demands, many industries, particularly transportation, will require a drastic modernisation, both technologically and in terms of process. It’s not a coincidence that the Korean word for modernity is “hyundai.” The engineers of Hyundai Motor Group (HGC), the third-largest vehicle manufacturer in the world, have experimented since the late 1980s with alternative, more environmentally- friendly propulsion methods than traditional internal combustion engines (ICEs), including flexible-fuel vehicles, electric vehicles and hybrid-electric vehicles (HEVs). The latter are currently the most interesting, awaiting the availability of batteries that can allow a larger range and additional infrastructure to charge electric motors.

Complex HEV Engineering

Designing HEVs presents complex challenges, such as determining which configuration will perform the best for a particular vehicle and its intended use. The main idea is to let the electrical motor support the ICE so that it can work more efficiently, or even be replaced for some drive cycles, like city use, for example. Significant engineering effort goes into the sizing of components and in defining the control algorithms that coordinates collaboration of the electric motor and ICE for optimal efficiency.

At the same time, engineers must consider other critical performance requirements, including driving dynamics and comfort. “As the effect of changing a parameter in favour of one performance aspect can negatively influence another, we have to look at multiple attributes simultaneously to find the optimal balance,” says Bang Jae-Sung, Senior Engineer at Hyundai. Mr Jae-Sung is one of the specialists at Hyundai’s research and development centre who focuses on developing the HEV control logic for optimal vehicle performance. “On top of that, with so many parameters involved and so many different drive cycles to evaluate, it would become a very time-consuming and costly affair if too much of the process still relied on trial and error.”

Implementing A Simulation-Based Approach

Together with Siemens PLM Software specialists, Hyundai engineers researched the possibility of saving development time and cost by implementing a more automated performance optimisation process, using state-of-the-art simulation capabilities. Together, they executed a project in which they virtually tested, validated and calibrated an HEV main controller using a real-time, closed-loop, model-based system simulation. Though hardwarein- the-loop (HiL) test platforms are industry- standard, this test case was rather unique in that it accurately captured both fuel economy and drivability simultaneously. “HiL simulation can be a difficult balancing task,” says Mr Jae-Sung. “On one hand, you have to limit the number of degrees of freedom (DOFs) so that the calculation can run in real time, but on the other hand the simulation model needs to remain sufficiently accurate so that it still produces realistic results. This requires very specialised software tools.

By using Simcenter Amesim software from Siemens PLM Software for the plant model in co-simulation with the MATLAB, Simulink and Stateflow environments for the controller models, we could achieve this objective really well.” Besides the supervisory hybrid control unit (HCU), which was the main subject of the validation study, the engineers also had to model the subsystem controllers to an appropriate level of detail. The engine management system (EMS) for example, regulates fuel, air and spark in order to produce the torque that is commanded from the HCU. If this feature is not modelled accurately, it can lead to significant deviations when predicting fuel economy and the battery’s state of charge. Other subsystems add to the complexity.

The dynamic Simcenter Amesim model included the required physics to accurately capture the energy flows and conversions from fuel to mechanical and electrical energy. For drivability assessment, the model possessed all the relevant elements for replicating the natural frequencies between 0 and 20 Hertz (Hz), as these can be felt by the driver. The model also included the efficiencies and energy losses of the main components necessary to predict fuel economy. The model was systematically built from component to full vehicle, validated in each of these stages, and later simplified to run in real time.

Reducing Physical Testing

“The project we did with the Simcenter Engineering specialists showed us that we can realise a good correlation between results from HiL simulation and the real vehicle behaviour for multiple attributes simultaneously,” says Mr Jae-Sung. “It confirmed that we can use this approach for upfront performance validation, as it allows us to quickly evaluate trends when designing HCU algorithms and defining calibration values, so that we can achieve a better starting point for physical prototyping.” The implementation of the Simcenter Amesim-based process as a standard development practice allows Hyundai engineers to improve the performance of HEVs while dramatically reducing time and cost. “By pre-defining major calibration values using HiL simulation, we were able to reduce the number of actual vehicle tests by 40 percent,” confirms Mr Jae-Sung.

“And we are in the process of extending the scope of this methodology to a much

larger number of test scenarios, by including additional physics in the models, such as thermal effects on engine, electric motor and battery, road geometry, vehicle lateral dynamics and many more.”

Future Ambitions

Image Source: Siemens

This thorough digitalisation of the process for eco-friendly vehicle design aligns with Hyundai’s long-term vision. In its mission statement, Hyundai clearly expresses the ambition of fulfilling its role and responsibility as a trusted global firm, while at the same time continuously improving the customer experience. To achieve this dual goal, the company counts on effectively delivering innovative mobility solutions based on technologies that are both eco-friendly and human-oriented. Adding value to their vehicles by applying this digital transformation to product development is a logical part of this endeavour. The next step is just around the corner. Rising innovations such as cloud computing, big data analytics and the Internet of Things offer new technological perspectives.

They will also enable companies like Hyundai to stay closely connected to their customers and, for example, get more information on the actual use of their vehicles, even on an individual basis. “Making a vehicle smart by digitally connecting development and operation will be the next technological revolution,” states Mr Jae-Sung. “For our application, we could imagine that additional improvement of performance and energy efficiency can be achieved by developing a control logic that can reflect the driver’s tendencies, and gather on-the-spot information on the actual traffic density. In that sense, digitalising vehicle development is just one step in a broader process.”

It is a vision that matches current industry trends, and one that Siemens PLM Software endorses.

To realise this vision, Siemens is gathering all the building blocks for an environment that facilitates a digital thread throughout the entire product lifecycle. Through ambitious development plans and acquisitions, Siemens clearly aspires to support their customers when they create the next modernity – in Korean: the next Hyundai.

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