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Predicting Structure Dynamic Acceleration Based on Measured Strain

  • Wang YuanshengEmail author
  • Lan Chunbo
  • Qin Weiyang
  • Yue ZhuFeng
Conference paper
Part of the Mechanisms and Machine Science book series (Mechan. Machine Science, volume 75)

Abstract

For complex structures, to understand its dynamical characteristics, it is desired that the dynamical responses under excitation, e.g. displacement or acceleration, could be measured directly. But at present, the measuring method for acceleration is still limited and constrained by many factors. Especially for complex structures, the direct measurement for acceleration is quite difficult. In contrast, strain measurement is relatively easy, since the strain sensor is simple and can be easily pasted on the surface of structure. Thus if the measured strain data can be used to predict the dynamical response of system, it will result in great benefit. In this paper, a method is proposed to predict the acceleration from the measured strain response, which needs only a few strain sensors. The validation experiments were carried out on a cantilever beam and a rectangle cylinder. The stochastic motion was chosen as the excitation source. The results prove that the presented method is effective and could reach a high precision.

Keywords

Strain mode Displacement mode Prediction Stochastic excitation 

Notes

Acknowledgements

The support of National Natural Foundation of China (Grant No. 11672237) is gratefully acknowledged.

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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Wang Yuansheng
    • 1
    Email author
  • Lan Chunbo
    • 1
  • Qin Weiyang
    • 1
  • Yue ZhuFeng
    • 1
  1. 1.School of Mechanics, Civil Engineering and ArchitectureNorthwestern Polytechnical UniversityXi’anChina

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