Title: Modal analysis and experimentally-testing modification for metal structure of tower crane
Abstract: With regard to the QTZ125 tower crane,a three-dimensional finite element model is established.By analyzing the metal structure modal under fixed constraints,the first several orders of modal vibration forms and frequencies are extracted.Afterwards,the contrasting verification is completed by on-site testing.As such,it is found that the results from modal frequency calculation are coincided with those from on-site testing.Due to the overall configuration of tower crane,the inherent frequency,along with dynamic stiffness especially for sidewise,is relatively low.Therefore,the anti-deformation ability with supporting structure should be strengthened in case of strong wind or high speed condition to improve the operational comfort.
Publication Year: 2013
Publication Date: 2013-01-01
Language: en
Type: article
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