Vibration behavior plays an important role in the development and optimization of refrigeration, air conditioning, ventilation, and heat pump systems. Compressors, fans, housings, piping, mounting structures, and complete HVACR units are subject to dynamic loads that can affect durability, acoustic performance, efficiency, and perceived product quality.
Experimental modal analysis (EMA) is a key method for understanding such vibration behavior, for validating finite element models, and to optimize structures. However, EMA is still often regarded as a specialist discipline, mainly because many workflow decisions depend on user experience and intuition.
The two critical steps are the selection of suitable reference points and reference degrees of freedom, as well as the the ri ...