A Time Domain Identification Method for Distributed Dynamic Loads on 1D Spatial Structures

WAN Cheng; YAN Bo

doi:10.21656/1000-0887.380006

Volume 38 Issue 9

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WAN Cheng, YAN Bo. A Time Domain Identification Method for Distributed Dynamic Loads on 1D Spatial Structures[J]. Applied Mathematics and Mechanics, 2017, 38(9): 967-978. doi: 10.21656/1000-0887.380006

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A Time Domain Identification Method for Distributed Dynamic Loads on 1D Spatial Structures

doi: 10.21656/1000-0887.380006

WAN Cheng^1,2,
YAN Bo¹

¹State Key Laboratory of Structural Analysis for Industrial Equipment(Dalian University of Technology), Dalian, Liaoning 116023, P.R.China;²School of Naval Architecture, Ocean & Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, P.R.China

Funds: The National Natural Science Foundation of China（51277186）

Received Date: 2017-01-06
Rev Recd Date: 2017-06-13
Publish Date: 2017-09-15

Abstract

Abstract

A time domain identification method for distributed dynamic loads on 1D spatial structures was proposed. Based on the idea of spatial and temporal divisions, the formula and process for load time history identification were derived. The load identification program was compiled by means of MATLAB, and the identification method was verified through 2 examples: a simply supported beam subjected to distributed dynamic loads and a power line subjected to stochastic wind loads. Moreover, the effect of noise on the load identification was investigated through numerical simulation. It is shown that the distributed loads can be accurately identified for linear problems and approximately identified for weakly nonlinear problems with the presented method, which provides an efficient way to identify distributed loads on engineering structures.
- distributed dynamic load,
- load identification,
- time domain method

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References(13)

References

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