
NVH, which stands for Noise Vibration and Harshness, is a dominant attribute that drives the design of a car the NVH engineer has a critical role to play, right from the concept stage to the end of the design cycle and actually even beyond.
For the NVH engineer, the CAR is a musical instrument and he strives to ensure that all the parts are tuned to function in a mutually harmonious way, suppressing unwanted noise and amplifying desired qualities.
The science behind it all, is beautiful and inspiring.
In the words of Nikola Tesla:
“If you want to unlock the secrets of the Universe, think in terms of Energy Frequency and Vibration”
Explore the physics of sound and vibration, including how oscillations and pressure fluctuations produce sound, the audible range of 20 Hz to 20 kHz, and the link to atmospheric pressure.
Define loudness with decibel formula 20 log(p/p0) and relate thresholds from a mosquito to car cabin, while contrasting time and frequency domain representations.
Link impedance and resonance to car noise and vibration, explaining how mass, elastic, and damping impedances shape resonant amplification and its suppression through impedance mismatch.
Explore how displacement, velocity, and acceleration relate at resonance, with 90-degree phase shifts and external force, and examine frequency response, damping, and the concepts of compliance, mobility, and accelerations.
Examine high input impedance strategies that create impedance mismatch at system boundaries with soft isolation elements, reducing energy transfer via force transmissibility and stiffness ratios around five to ten.
Explore computer aided engineering simulations to understand vehicle structure and component interactions, derive performance targets for noise and vibration, and compare architectures and vehicles for best in class development.
Explore how the C model is assembled using a main include and component includes, linking doors, the body, and subsystems with connector includes to form the full vehicle module.
Learn real eigenvalue analysis in Nastran/OptiStruct to identify natural frequencies and mode shapes from a mass and stiffness system, with damping and boundary conditions.
NVH, which stands for Noise Vibration and Harshness, is a dominant attribute in Automotive Engineering that drives the design of a car. The NVH engineer has a critical role to play, right from the concept stage to the end of the design cycle and actually even beyond.
For the NVH engineer, the car is a musical instrument and he strives to ensure that all the parts are tuned to function in a mutually harmonious way, suppressing unwanted noise and amplifying desired qualities.
The science behind it all, is beautiful and inspiring.
In the words of Nikola Tesla: “If you want to unlock the secrets of the Universe, think in terms of Energy Frequency and Vibration”.
The Automotive Industry is undergoing a radical shift currently, racing towards alternative propulsion technologies, innovative light weight structures, Artificial Intelligence and Machine Learning, providing newer, more exciting challenges as well as opportunities to the NVH engineer.
It is definitely a great time to start this journey!
In this course, the Student will be oriented towards essential theoretical concepts that would lead to a strong foundation in NVH. It is crucial to have a strong foundation in the science of sound and vibration in this highly technical domain, so that the student is able to visualize NVH problems in terms of basic physical principles and efficiently solve them.
The Student will also get adequate exposure to the inner workings in the industry starting from standard procedures to state-of-the-art methodologies.
This course has been designed with the intention of accelerating the pace at which a beginner can adapt in this domain and progress to being a highly successful NVH Engineer.
This course should also interest any Automotive enthusiast with or without a background in Vehicle Refinement.