Modified Modal Strain Energy Method Used for Predicting Damping Characteristics of HardCoating Thin Plate

doi:10.12068/j.issn.1005-3026.2014.04.022

Journal of Northeastern University Natural Science ›› 2014, Vol. 35 ›› Issue (4): 551-554.DOI: 10.12068/j.issn.1005-3026.2014.04.022

• Mechanical Engineering • Previous Articles Next Articles

Modified Modal Strain Energy Method Used for Predicting Damping Characteristics of HardCoating Thin Plate

SUN Wei， HAO Chunlei， ZHANG Honghao， PAN Dejun

School of Mechanical Engineering ＆ Automation， Northeastern University， Shenyang 110819， China.

Received:2013-04-14 Revised:2013-04-14 Online:2014-04-15 Published:2013-11-22
Contact: SUN Wei
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Abstract

Abstract: Considering the small damping characteristics of hardcoating materials and the calculation error caused by classic modal strain energy method， a new method was proposed to predict damping characteristics of hardcoating composite structure. The principle formulas of modified modal strain energy method were deduced. A case of cantilever plate covered with MgAl hard coating was carried out， and the effects of the hard coating materials parameters and coating thickness on the damping characteristics of composite structure were discussed. The analysis results showed that the increase of Young’s modulus， loss factor or thickness of coating can improve the damping properties of the composite structure. The relevant research results provide a reference for the preparation of hard coating materials and design of damping vibration reduction.

Key words: modified modal strain energy method, hard coating, thin plate structure, damping characteristics, prediction

CLC Number:

SUN Wei， HAO Chunlei， ZHANG Honghao， PAN Dejun. Modified Modal Strain Energy Method Used for Predicting Damping Characteristics of HardCoating Thin Plate[J]. Journal of Northeastern University Natural Science, 2014, 35(4): 551-554.

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Modified Modal Strain Energy Method Used for Predicting Damping Characteristics of HardCoating Thin Plate

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