The force identification in arch using a wavelet deconvolution method

Hongwei Ma; Liangyan Cheng; Zhenhua Song; Zhenhua Nie

doi:10.1117/12.839232

24 August 2009 The force identification in arch using a wavelet deconvolution method

Hongwei Ma, Liangyan Cheng, Zhenhua Song, Zhenhua Nie

Proceedings Volume 7375, ICEM 2008: International Conference on Experimental Mechanics 2008; 73752V (2009) https://doi.org/10.1117/12.839232
Event: International Conference on Experimental Mechanics 2008 and Seventh Asian Conference on Experimental Mechanics, 2008, Nanjing, China

Abstract

In this paper, an efficient technique is proposed for identifying the impact forces acting on circular arch, which overcome the deficiency of ill-conditioned frequency response function (FRF) in the frequency domain approach. First the comparison of the force identifications based on Pseudo-Wavelet Deconvolution Method (PWDM) and Frequency Deconvolution Method (FDM) is introduced. Next, the excitation and structural response needed in PWDM are derived from experiment and simulation separately. Last, force reconstructions via PWDM with the simulated and measured arch structural responses are compared with the corresponding experimental input force. By virtue of this technique, the solution of this inverse problem for identifying the impact force becomes stable and accurate. Deficiently, some experience is needed in deciding the pulse width and the shift of wavelet force.

Citation Download Citation

Hongwei Ma, Liangyan Cheng, Zhenhua Song, and Zhenhua Nie "The force identification in arch using a wavelet deconvolution method", Proc. SPIE 7375, ICEM 2008: International Conference on Experimental Mechanics 2008, 73752V (24 August 2009); https://doi.org/10.1117/12.839232

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