Use of Multidiscipline Solutions to Improve Automotive Noise, Vibration and Harshness

Use of Multidiscipline Solutions to Improve Automotive Noise, Vibration and Harshness
22
Apr

Simulation software is being used extensively around the world due to their accuracy and cost-effectiveness. Instead of using different simulation tools for every different type of testing process, engineers can use multidiscipline tools to better improve NVH (noise, vibration, harshness). MD solution tools can be used for many different areas of testing, including:

  •  Analysis of the interior acoustics of cars. Interior acoustic analysis is the examination of acoustics in a bounded area. This testing technique saves companies a significant amount of model processing time.
  • Exterior acoustics, and are used to study unbounded exterior acoustic domain. They examines the sound pressure a vibrating body creates around the area. With MD Nastran, infinite elements beyond the boundaries of the engine can be calculated.
  • Superelements, which give engineers the opportunity to separate the part into pieces. In this way, data of the smaller pieces can be stored and used in the future. This reduces solution time and computation times even though the part is assembled in different ways.

In addition to these features, acoustics and fluid-structure interaction are fully supported by the design optimization module of MD Nastran. Acoustic results like sound pressure can be used in the definition of the objective function and in the definition of constraints. The multidisciplinary optimization capability of MD Nastran allows engineers to improve overall product quality metrics.

MD tools give engineers significant advantages: they create the ability to study multiple disciplines at the same time in one environment, help reduce the cost and time spent on testing, and help engineers better understand noise and vibration.

 

 

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