In the world of engineering and product design, accurately predicting and mitigating noise, vibration, and harshness (NVH) issues is critical. Two powerful tools that engineers use to address these challenges are Impact Frequency Response Function (FRF) and Virtual Point Transformation (VPA).

NVH (noise, vibration, and harshness) prediction is a critical process in the automotive industry to ensure customer satisfaction, safety, and compliance with regulatory requirements.

In the world of technology, the accelerometer, a versatile sensor, has emerged as a crucial component in various devices. One common question revolves around its ability to measure distance accurately. While accelerometers excel at measuring acceleration, their role in distance estimation is not straightforward. This article explores the working principles of accelerometers, their limitations, and the methods used to estimate distance, shedding light on their significance in modern technology.

NVH (noise, vibration, and harshness) prediction is a critical process in the automotive industry to ensure customer satisfaction, safety, and compliance with regulatory requirements. Modal analysis is a popular technique used for NVH prediction, involving both testing and simulation. The goal of modal analysis is to measure the natural frequencies, damping ratios, and mode shapes of a structure, which can be used to identify the sources of noise and vibration and make improvements to the design. While modal analysis offers several benefits, such as cost savings and faster time to market, there are also some challenges associated with the technique, including complexity and cost. In this article, we will explore modal analysis for NVH prediction, its benefits, and its challenges.

Aircraft manufacturers are facing stricter regulations for aircraft emissions, including environmental noise, and increased pressure to improve cabin acoustic comfort. Vertical take-off and landing (VTOL) vehicles, currently being developed to enable urban air mobility (UAM), must also be optimized to minimize noise pollution in densely populated areas. This challenges engineering teams to efficiently troubleshoot noise issues and develop quieter aircraft designs without compromising weight and performance objectives. Simcenter™ software and hardware offer a complete solution for detailed acoustic testing and sound engineering. The solution features a number of technological advancements that help engineers perform acoustic measurements more efficiently for both exterior and interior noise.

Transformer noise is caused by a phenomenon called magnetostriction. In very simple terms this means that if a piece of magnetic sheet steel is magnetized it will extend itself. When the magnetization is taken away. It goes back to its original condition. A transformer is magnetically excited by an alternating voltage and current so that it becomes extended and contracted twice during a full cycle of magnetization.

Vibration and noise control are important methods of reducing or eliminating unwanted sounds and vibrations. There are many different ways to achieve vibration and noise control, and the most effective approach will vary depending on the specific situation. In some cases, simple measures like increasing the mass of a structure can be enough to dramatically reduce vibration and noise levels. In other cases, more complex methods like active noise cancellation may be necessary. Whatever the approach, it is important to consider both vibration and noise control when trying to create a quiet environment.