Structural Parameter Identification Based on the Interval Mathematics Method

SONG Haiyang

doi:10.21656/1000-0887.440319

Volume 45 Issue 5

May 2024

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Article Navigation > Applied Mathematics and Mechanics > 2024 > 45(5): 571-581

SONG Haiyang. Structural Parameter Identification Based on the Interval Mathematics Method[J]. Applied Mathematics and Mechanics, 2024, 45(5): 571-581. doi: 10.21656/1000-0887.440319

Citation:

SONG Haiyang. Structural Parameter Identification Based on the Interval Mathematics Method[J]. Applied Mathematics and Mechanics, 2024, 45(5): 571-581. doi: 10.21656/1000-0887.440319

Citation:

SONG Haiyang. Structural Parameter Identification Based on the Interval Mathematics Method[J]. Applied Mathematics and Mechanics, 2024, 45(5): 571-581. doi: 10.21656/1000-0887.440319

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Structural Parameter Identification Based on the Interval Mathematics Method

doi: 10.21656/1000-0887.440319

SONG Haiyang^{1, 2
,
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1.
School of Civil Engineering and Architecture, Northeast Electric Power University, Jilin, Jilin 132012, P.R.China
2.
Key Lab of Electric Power Infrastructure Safety Assessment and Disaster Prevention of Jilin Province, Northeast Electric Power University, Jilin, Jilin 132012, P.R.China

Received Date: 2023-10-22
Rev Recd Date: 2024-01-29
Publish Date: 2024-05-01

Abstract

Abstract

The statistical energy analysis (SEA) method was popularly employed to handle the high-frequency dynamics problems in many engineering fields such as aerospace and shipping. The damping loss factor and coupling loss factor were the major parameters in the SEA theory, and they can usually be identified with the measured external input power and structural modal energy. The measurement errors of the input power and modal energy were not considered in the traditional parameter identification, where the accuracy of the identified results was relatively low. The interval mathematics method was applied to the parameter identification in this study, and the measurement errors of the input power and modal energy were fully considered. The effects of the measurement errors on the parameter identification were revealed, and the accuracy of the identified results was improved. The work can be helpful for the structure design and safety analysis.
- interval mathematics,
- parameter identification,
- statistical energy analysis,
- structural vibration

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References(16)

References

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