Altair® Squeak and Rattle Director™ Applications
Altair’s Squeak and Rattle Director enables expert and novice computer aided engineering (CAE) engineers to rapidly identify and eliminate a variety of sound, vibration, and perceived quality issues in products at an early design stage.
Users can easily analyze multiple loading scenarios – static, dynamic, thermal events or even a combination of them – then identify root causes through modal contribution studies and find robust design solutions through numerical optimization, all without the need for a physical prototype.
Squeak and Rattle Director is the only integrated platform which facilitate finite element (FE) model building, dynamic solvers, diagnostics, and FE-test correlation. All working concurrently.
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Perceived Quality
Detect, prevent, and eliminate risk of squeaks and rattles. Improve the touch-and-feel of products through a simulation that measures resistance and identifies possible squeak issues while a consumer is touching and/or pressing the parts. Study the sealing behavior and how it compresses to determine any risk for seal squeak due to continuous random compression.
Warranty Prevention
Over time, continuous vibration can wear out components and cause failure. Use Squeak and Rattle Director to track where and how often components interact and evaluate possible fixes.
Paint abrasion is another very costly warranty issue caused by unanticipated chafing between two subsystems or components. Squeak and Rattle Director provides an upfront answer as to where there a is higher risk of paint abrasion.
Device Sound Quality
The sounds caused by the interior parts of speaker interacting with each other while playing music can drastically affect the sound quality. Vibration of the speaker can cause a squeak between the speaker mounts and ground. With Squeak and Rattle Director, users can easily perform what-if scenarios with different ground-bases to accurately evaluate the risk of sound quality issues.
Electrical System Safety
Pinching of cables inside a battery box causes damage but also catastrophic failures such as fires. With simulation, engineers can investigate complex modules for possible contact problems with interior cables.
Impacts between high-voltage components in an ECU can also cause dramatic failure. Use Squeak and Rattle Director to detect and prevent issues related to electrical components colliding and losing function due to vibrational loads.
Featured Resources
The Hidden Challenges of a Fantastic "In-car" Sound Experience
Speaker systems are practically mandatory in automobiles today as they are a big part of the modern features that resonate with quality, user experience and luxury. The article - originally published by SIA on issue #874 of "Ingénieurs de l'auto" - explains the challenges of designing loudspeakers for vehicles and how Altair technologies can help attain the best combination of sound, vibration, and perceived quality performance.
How CEVT Improves Vehicle Architecture and Eliminates BSR Through Simulation - Part 2
Improving the ESL using Complete Vehicle Correlation In the previous webinar, the development of an ESL has been shown based on a complete vehicle simulation. In order to validate this new approach, a comprehensive correlation work has been performed. Using the dynamic distortion in all closure body openings as correlation criteria offer a unique possibility to increase the understanding of the load from both the engine and the wheel suspension. This webinar presents this correlation where a test vehicle is driven on different test tracks both in reality and virtually. Presenter: Jens Weber | CAE Engineer, CEVT
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Sound and Simulation: Designing a Smart Speaker
Speaker design and analysis, especially for a more complex product, system, or component, often requires building multiple simulation models. The loudspeaker development process involves multi-physics and multiple sources in parallel, to multiple simulation runs for prototyping, testing, and validation. This results in separate models for nonlinear analysis of strength, thermal analysis and stiffness, noise, vibration, and acoustics. Even though each model isn’t always built from scratch, typically the use of different solvers for each attribute will require that models need to be converted from one solver format to another. This practice is not only time consuming but frequently error prone resulting in an inefficient use of engineering time.
Identify & Eliminate Squeak & Rattle Phenomena with Access to Ziegler's PEM Database
Reducing the presence of interior Squeak and Rattle (S&R) noises has become an on-going trend within the Automotive and Aerospace communities. Read more to see how Ziegler's PEM database helps to identify eliminate this phenomena.
