Category - Noise & Vibration

5
Sep

Analysis of IXV Space Hardware Exposed to Acoustic Diffuse Random Field

Reusable launchers are recognized as one of the solutions to lower launch costs. Contrary to more traditional expendable launchers, the reusable launchers are able to launch a payload and return part of the structure on the Earth surface. In 2015, ESA launched the Intermediate eXperimental Vehicle (IXV). This vehicle was developed by Thales Alenia Space …

20
Aug

Noise Prediction for Electric Vehicle Powertrain

NVH (Noise, Vibration, and Harshness) or N&V (Noise and Vibration), is a problem that is often directly tied to the overall quality of a product. Therefore, it is one of the most sought after targets for performance by product development teams to help differentiate themselves from competition. With the emergence of hybrid and electric vehicles, …

30
Aug

Industry Applications of NEVF with Dr. Neil Bishop

Dr. Neil Bishop of CAEfatigue Limited, one of the most renowned experts in Fatigue Dynamics and FEA, partnered with the MSC Nastran team to create a more dynamic and integrated solution after experiencing the many limitations of fatigue simulation. Thus, Nastran Embedded Vibration Fatigue (NEVF) was born. NEVF is more accessible, easy-to-use, and flexible in …

16
Jun

Accurately Predicting the Behavior of Pneumatic Tires

When developing the sub-systems of a vehicle, compromises have to be made among several contrasting objectives. On one hand, one wants to set all sub-systems – such as suspensions – so that they allow efficient and safe handling of the vehicle. On the other hand, comfort cannot be sacrificed too much. Being the support of the vehicle and providing forces necessary to control it, pneumatic tires are one of the most important components. However, it is very challenging to model them due to both their complicated composition and the materials used in their manufacturing process. On top of that, the modeling is done by suppliers and an in depth understanding of the interaction with the vehicle must be attained.

2
Jun

Simulation Software Helps Optimize the Golf Club Performance

Cleveland Golf launches new golf club designs on an annual basis in a highly competitive, performance-driven market. With competition gaining groudn on them, Cleveland’s management challenged Jeff Brunski, Performance Research Engineer, to find ways to truly optimize their golf club performance – and that meant evaluating hundreds of design variations.

13
May

Finding the Solution to a Noise Problem

A nighttime noise complaint was issued from the residential area near one of Wärtsiläs main large 4-stroke medium speed engine factories located in downtown Vaasa.  The facility produces about 500 engines per year and every engine is subjected to a test run. An investigation found that the likely source of the intolerable noise was from the exhaust from an engine 1000 hour endurance test. Although they discovered the source of the noise, they were unable to solve the noise problem completely. 

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