Abstract
Efforts for structural tubing characterization are presented here for HVAC industry fixed speed applications. Structural tubing is a type of metal connector typically with hollow circular or rectangular cross-sections. Copper tubing is widely used in HVAC industry to transfer refrigerant between compressors and condensers. However, when the natural frequencies of tubing system are at the running speeds of the compressors; design life of the product is reduced. Therefore, tubing configuration structural change is needed to shift these problem frequencies. Traditionally, industry has been using finite element method and vibration tests to identify the critical geometric parameter for frequency shift. New efforts are been proposed here to present designer a sensitivity study tool to identify these critical parameters quickly, therefore, shorten the design cycle time.
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