[1] He Pengcheng, Jia Fang,. Reconstruction of impact force of mechanical press in time domain [J]. Journal of Southeast University (English Edition), 2011, 27 (4): 400-404. [doi:10.3969/j.issn.1003-7985.2011.04.011]

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Reconstruction of impact force of mechanical press in time domain()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

27

Issue:

2011 4

Page:

400-404

Research Field:

Mechanical Engineering

Publishing date:

2011-12-31

Info

Title:

Reconstruction of impact force of mechanical press in time domain

Author(s):

He Pengcheng;  Jia Fang

School of Mechanical Engineering, Southeast University, Nanjing 211189, China

Keywords:

mechanical press;  impact force;  reconstruction;  inverse problem;  regularization

PACS:

TH113.1

DOI:

10.3969/j.issn.1003-7985.2011.04.011

Abstract:

To overcome the difficulty in directly measuring the impact force of a mechanical press, the inverse theory is employed to reconstruct the impact force from the corresponding response data in time domain. The nature of ill-posedness of impact force reconstruction is explored through singular value decomposition(SVD)and the Tikhonov regularization is utilized to deal with the ill-posedness, in which the optimal parameter is chosen in light of the L-curve criterion and the generalized cross-validation(GCV). The experimentally measured strain responses of upper and lower dies of the press are chosen as source data for impact force reconstruction, and the corresponding numerical results are compared with the experimental measurements, which verifies the effectiveness of the reconstruction method.

References:

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[8] Jang T S. Non-parametric simultaneous identification of both the nonlinear damping and restoring characteristics of nonlinear systems whose dampings depend on velocity alone [J]. Mechanical Systems and Signal Processing, 2011, 25(4): 1159-1173.
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Memo

Memo:

Biographies: He Pengcheng(1987—), male, graduate; Jia Fang(corresponding author), female, doctor, associate professor, 13851896116@139.com.
Foundation item: Transformation Program of Science and Technology Achievements of Jiangsu Province(No.BA2008030).
Citation: He Pengcheng, Jia Fang.Reconstruction of impact force of mechanical press in time domain[J].Journal of Southeast University(English Edition), 2011, 27(4):400-404.[doi:10.3969/j.issn.1003-7985.2011.04.011]

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