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.
Using the Simcenter tools and services for more than four years, Karma went beyond NVH optimization to optimize its overall development process. Combining both test and simulation in one platform uniquely enables collaboration among teams and divisions with streamlined data exchange.
“Now that we have a process in place at Karma, and we’ve successfully put our project on the market by utilizing this process, we’re excited to take on the next challenge.”
A relentless pursuit of excellent NVH
With a hybrid-electric sports car, engine noise is a key performance attribute to manage throughout the entire development process. Engine noise needs to be brand-specific. This isn’t an easy task, because “there is no history of what an electric sports car engine should sound like,” says Jud Knittel, noise, vibration and harshness (NVH) lead engineer at Karma Automotive.
The main issue with hybrid-electric cars is that the lack of the noise-masking effect of a combustion engine makes a lot of other sounds more apparent, such as road or HVAC noise. Much more effort must be applied to reduce these noise sources than for traditional cars.
In addition, efforts to optimize NVH can actually become counterproductive if they have a negative impact on other attributes such as such as weight, strength, durability and ride comfort. Using testing and simulation (sometimes simultaneously) is essential in maintaining this balance. Karma understood this at the very beginning of the development project.
Full NVH co-development of Karma Revero and Revero GT2.0
Simcenter Engineering provides NVH project management as well as manpower
Combined benefits for Karma: project results and NVH technology transfer
Body NVH Simulation
Correlate Test and Simulation
Attribute Balancing
Going above and beyond
It may be bold but perhaps fair to say that Karma has succeeded where Fisker failed: on the hard business side of things. With the Karma Revero, superior design not only meets economics, but does so in an environmentally friendly and acoustically enjoyable way. These features are considered to be among the most important success parameters of the 21st century.
Using the Simcenter tools and services, Karma went beyond NVH optimization to optimize its overall development process:
Meet NVH performance expectations for the new Revero GT.
Embedded NVH team.
Full scope of TEST and CAE based NVH Engineering.
Transfer technology and deployment of tools & processes.
“We established the strategic partnership with Simcenter Engineering and Consulting services to meet NVH performance targets and implement state-of-the-art NVH testing and simulation processes.”
Credit: Siemens Digital Industries Software
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