There are roughly two situations in which vibration can occur:

1. Natural phenomena — such as vibrations caused by earthquakes or strong winds.
2. Unnatural or man-made sources — such as vibrations produced by machinery or vehicles.

Therefore, vibrations caused by natural phenomena can be considered “vibration,” and if the source is unnatural or man-made, it is still referred to as “vibration.” The distinction is not about the term used, but rather the source of the vibration.

This article will once again discuss vibration isolators, which are applied in many situations to achieve vibration isolation. This brings us back to a common question:

1. Is a vibration isolator the same as a shock isolator or a shock absorber?
2. Is the purpose of vibration isolation best described as isolation and shock absorption, or as vibration isolation and general isolation?

Personal Viewpoint:

Personally, I prefer using the term “vibration isolator” to distinguish it from “shock absorber.” However, in English, both may be generally referred to as vibration isolators.

Understanding the Terminology:

• A vibration isolator is used when a machine generates significant vibration—such as punch presses, machine tools, etc. In this case, a proper vibration isolator prevents the machine’s vibrations from being transmitted to the ground, reducing impact on nearby areas.
• A shock absorber refers to another application of a vibration isolator: when a precision machine needs to be protected from external environmental vibrations, a shock absorber prevents these external vibrations from affecting the machine.

Additionally, vehicles such as automobiles, motorcycles, and bicycles use shock absorber systems. In English, these are often referred to as suspensions or cushions, and they are also designed to isolate or reduce vibrations.

Conclusion:

In essence, whether called a vibration isolator or a shock absorber, the basic design principle is the same. The goal of vibration isolation remains unchanged. However, due to the different sources of vibration, the design of the vibration isolator may vary.