Learn more about Campbell diagrams using these hands-on 101 Diagramss that we have collected for you! In the following diagrams, the detailed examples of Campbell diagrams are illustrated clear pictures. Follow these diagrams to study more about the topic and we’ll start by giving you the simple example diagram below.
A Campbell diagram 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. A Campbell diagram plot represents a system’s response spectrum as a function of its oscillation regime. It is named for Wilfred Campbell, who introduced the concept. This diagram is also called interference diagram. More printable examples of the diagrams are provided in the following images.
The diagram is used to evaluate the critical speed at different operating speed. The Campbell diagram represents the frequency versus the rotation speed of the shaft: the evolution of the natural frequencies corresponding to a mode are drawn in function of the rotation speed of the shaft. In the following diagram, provided the respiratory Campbell diagram that is used as a graphical means of assessing the relationship between intra-thoracic pressure or pleural pressure [on the x-axis] and thoracic volume [on the y-axis] as a function of airway resistance, lung compliance and chest wall compliance.
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