Design and Simulation Analysis of Wl Anti-vibration Clamp in HG/T21629
The W1 disc spring anti-vibration clamp in HG/T21629 is widely used for supporting pipelines with vibration risks.In the actual static stress analysis,designers generally model such supports in CAESARII as a combination of Y and guided restraints without gaps.This combination only considers the friction of pipeline and medium weight,ignoring the influence of preload of disc spring,which will have a significant impact on the calculation results.This article mainly focuses on this issue and discusses how to accurately simulate the W1 type disc spring anti-vibration clamp using the translational double acting bilinear restraints in CAESARII.It is recommended to select preload according to dynamic loads,the applicable range of disc spring,and the friction coefficient.The design specification should include requirements for installation to ensure the accuracy of preload.In the example simulation,two methods are used to calculate the preload friction force and no preload friction force.By comparing their load and displacement,it is recommended to use the W1 type disc spring anti-vibration clamp.It should be noted that the axial friction force generated by thermal expansion of the pipeline on the support should be considered as the structural design load.
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