On this page, we have collected some examples of Campbell diagrams that you can save and print to use as your reference. This frequency and rotation diagram here is presented with all the examples in printable size. All of the examples of the diagrams are provided in the images below in full size, so just click on the image to download it. Let’s get started with the first Campbell diagram for turbine blades below.
So, the Campbell diagram represents the frequency versus the rotation speed of the shaft. It is used to evaluate the critical speed at different operating speed. This is a mathematically-constructed diagram used to check for coincidences of vibration sources (1x, 2x, etc. shaft speed) with rotor natural frequencies, resulting in rotor resonances. It plots frequency vs RPM, with plot size growing with increasing amplitude. This diagram is sometimes also called an interference diagram. The following diagrams are for lung and quest.
In the structure of a Campbell diagram, you’ll see that it uses an equation for rotor motion to express the external force caused by the rotational frequency as a periodic function. This function is mapped on a graph, which allows you to analyze the vibration characteristics of a system. A transient Campbell diagram relies on a test or simulation of a complicated rotor system for which an equation of mode cannot be produced. The following diagrams are Joseph Campbell’s monomyth and breathing diagram.
All of the printable diagrams are free, just click on it and save or print for your reference. You can use these diagrams for your teaching or studying session, or you can share them on the social network!