What is a motion vibration?

When a body moves to and fro about its mean position is called vibratory motion. Vibratory motion can be described as any object moving/swinging back and forth, moving up and down, pulsating, spinning, or vibrating. swinging; pendulums, swings, metronomes are the example of vibratory motion.

What is the formula for vibration?

x = A sin ωnt + B cos ωnt = C sin (ωnt + θ) (2.9) where C = (A2 + B2)1/2 and θ = tan−1 (B/A). The angle θ is called the phase angle. Static Deflection. The static deflection of a simple mass-spring system is the deflection of spring k as a result of the gravity force of the mass, δst = mg/k.

What is harmonic base motion?

In mechanics and physics, simple harmonic motion (sometimes abbreviated SHM ) is a special type of periodic motion where the restoring force on the moving object is directly proportional to the magnitude of the object’s displacement and acts towards the object’s equilibrium position.

What is vibratory motion example?

When a part of the body remains fixed and the rest part moves to and fro, that is called vibratory motion. For example: when humans breathe, their chest expands and contracts.

What are two types of vibration?

vibration

• Vibrations fall into two categories: free and forced.
• The vibrations of a spring are of a particularly simple kind known as simple harmonic motion (SHM).
• A universal feature of free vibration is damping.
• Forced vibrations occur if a system is continuously driven by an external agency.

What is base excitation?

Base Excitation models the behavior of a vibration isolation system. The base of the spring is given a prescribed motion, causing the mass to vibrate. This system can be used to model a vehicle suspension system, or the earthquake response of a structure.

What causes vibration?

Vibration can be caused by one or more factors at any given time, the most common being imbalance, misalignment, wear and looseness.

What is base motion?

Base Motion. Base Motion. Sometimes the components described by a multibody dynamics assembly are attached a common “ground”, which is not fixed in space but has a uniform movement. Use Base Motion ( ) to specify the motion (displacement, velocity, or acceleration) of the environment to which the assembly is connected.

What is base excitation in vibrations?