"Vibration is a mechanical phenomenon whereby oscillations occur about an equilibrium point."
Studies the relationship between sound and mechanical vibrations in structures.
Oscillations and Simple Harmonic Motion: Understanding the basics of oscillations and simple harmonic motion is crucial for learning about vibration acoustics.
Wave Propagation: Waves are an essential component of acoustics, including vibration acoustics. A thorough understanding of wave propagation is necessary to understand the principles of acoustics.
Fourier Analysis: Fourier analysis is used to decompose complex signals into simpler sinusoidal waveforms. It is a crucial component of understanding vibration acoustics.
Resonance and Natural Frequency: Resonance is the phenomenon where a system vibrates with maximum amplitude at a particular frequency. Understanding resonance and natural frequency is vital in vibration acoustics.
Damped and Undamped Systems: Damped and undamped systems are essential in acoustic analysis for understanding damping in vibration systems.
Impulse and Frequency Response: Impulse response and frequency response are critical components of acoustic analysis for understanding how a system responds to an impulse or set of frequencies.
Transfer Function: Transfer Function is a mathematical tool used to describe how an input signal is transformed into an output signal in a system.
Sound Radiation and Transmission: Sound radiation and transmission refer to how sound energy is emitted and propagated in the environment.
Acoustic Modeling: Acoustic modeling uses mathematical models to simulate and predict the behavior of acoustic systems.
Acoustic Measurement: Acoustic measurement techniques are critical for quantifying sound and vibration in physical systems.
Free vibration: When a system vibrates without any external force, it is called free vibration.
Forced vibration: When a system vibrates under the influence of an external force, it is called a forced vibration.
Resonance: It is a phenomenon in which the amplitude of vibration becomes maximum when the frequency of the external force matches the natural frequency of the system.
Damping: It is the gradual reduction of the amplitude of vibration due to the dissipation of energy as heat or sound.
Harmonic motion: Periodic and oscillatory motion of an object with a constant frequency is called harmonic motion.
Transverse vibration: It is a type of vibration in which the movement of the system is perpendicular to the direction of energy propagation.
Longitudinal vibration: In this type of vibration, the movement of the system is parallel to the direction of energy propagation.
Surface vibration: Vibrations that occur at the surface of an object or material are called surface vibrations.
Flexural vibration: Flexural vibration occurs when an object or material bends and vibrates at the same time.
Torsional vibration: When an object or material twists and vibrates at the same time, it is called torsional vibration.
Shear wave: A type of wave that travels through a material in a direction perpendicular to the direction of energy propagation is called a shear wave.
Compressional wave: A type of wave that travels through a material in a direction parallel to the direction of energy propagation is called a compressional wave.
Rayleigh wave: A type of surface wave that travels along the surface of a solid material and causes the surface to move in an elliptical motion.
Lamb wave: A type of guided wave that travels along a thin plate or a thin-walled structure and causes the structure to vibrate.
"The oscillations may be periodic, such as the motion of a pendulum, or random, such as the movement of a tire on a gravel road."
"Vibration can be desirable: for example, the motion of a tuning fork, the reed in a woodwind instrument or harmonica, a mobile phone, or the cone of a loudspeaker."
"Vibration is undesirable, wasting energy and creating unwanted sound."
"The vibrational motions of engines, electric motors, or any mechanical device in operation are typically unwanted."
"Such vibrations could be caused by imbalances in the rotating parts, uneven friction, or the meshing of gear teeth."
"Careful designs usually minimize unwanted vibrations."
"The studies of sound and vibration are closely related (both fall under acoustics)."
"Sound, or pressure waves, are generated by vibrating structures (e.g. vocal cords)."
"These pressure waves can also induce the vibration of structures (e.g. ear drum)."
"Attempts to reduce noise are often related to issues of vibration."
"Machining vibrations are common in the process of subtractive manufacturing."
"Vibration (from Latin vibrÅ 'to shake') is a mechanical phenomenon."
"For example, the motion of a tuning fork..."
"The reed in a woodwind instrument or harmonica..."
"A mobile phone, or the cone of a loudspeaker..."
"The vibrational motions of engines... are typically unwanted."
"Imbalances in the rotating parts, uneven friction, or the meshing of gear teeth..."
"The studies of sound and vibration are closely related (both fall under acoustics)."
"Sound, or pressure waves, are generated by vibrating structures...these pressure waves can also induce the vibration of structures..."