A METHOD FOR DETERMINING RAYLEIGH DAMPING PARAMETERS OF COMPLEX FIELD
Rayleigh damping model, which is still adopted by manygeneral finite element programs and widely used in analysis of engineering, leads to the inconformity of the calculating modal damping ratio with the actual modal damping ratios. The appropriate Rayleigh dampin...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Czech Technical University, Prague
2019-10-01
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| Series: | Civil Engineering Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.14311/CEJ.2019.03.0034 |
| _version_ | 1797707494034767872 |
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| author | Huai-feng Wang Ru-lin Zhang |
| author_facet | Huai-feng Wang Ru-lin Zhang |
| author_sort | Huai-feng Wang |
| collection | DOAJ |
| description | Rayleigh damping model, which is still adopted by manygeneral finite element programs and widely used in analysis of engineering, leads to the inconformity of the calculating modal damping ratio with the actual modal damping ratios. The appropriate Rayleigh damping matrix is significant for accurate dynamic response analysis of complicated field. This paper establishes a dual parameter optimization theory for calculation of Rayleigh damping coefficients. The functional relation between the relative error of dynamic response and Rayleigh damping coefficients is established based on CQC method. By taking the square sum of the errors of peak value of displacement and the error of peak value of acceleration at the multiple points (DOF) of the surface of the complex site as the control objective, the equations for solving Rayleigh damping coefficients are obtained based on the principle of minimizing the control objective. Then, as an example, the seismic response of a valley under the excitation of 28 representative seismic waves which are randomly selected is calculated and the error due to Rayleigh damping model is analysed. The numerical result verifies the accuracy and applicability of the proposed method. |
| first_indexed | 2024-03-12T06:08:10Z |
| format | Article |
| id | doaj.art-e831254e62eb42b59e9b8dd4cda60271 |
| institution | Directory Open Access Journal |
| issn | 1805-2576 |
| language | English |
| last_indexed | 2024-03-12T06:08:10Z |
| publishDate | 2019-10-01 |
| publisher | Czech Technical University, Prague |
| record_format | Article |
| series | Civil Engineering Journal |
| spelling | doaj.art-e831254e62eb42b59e9b8dd4cda602712023-09-03T03:29:54ZengCzech Technical University, PragueCivil Engineering Journal1805-25762019-10-012019342043410.14311/CEJ.2019.03.0034A METHOD FOR DETERMINING RAYLEIGH DAMPING PARAMETERS OF COMPLEX FIELDHuai-feng Wang0Ru-lin Zhang1Xiamen University of Technology, School of Civil Engineering and Architecture, No. 600Ligong Road,Xiamen, ChinaChina University of Petroleum, College of Pipeline and Civil Engineering, Qingdao, No. 66 Changjiang West Road, ChinaRayleigh damping model, which is still adopted by manygeneral finite element programs and widely used in analysis of engineering, leads to the inconformity of the calculating modal damping ratio with the actual modal damping ratios. The appropriate Rayleigh damping matrix is significant for accurate dynamic response analysis of complicated field. This paper establishes a dual parameter optimization theory for calculation of Rayleigh damping coefficients. The functional relation between the relative error of dynamic response and Rayleigh damping coefficients is established based on CQC method. By taking the square sum of the errors of peak value of displacement and the error of peak value of acceleration at the multiple points (DOF) of the surface of the complex site as the control objective, the equations for solving Rayleigh damping coefficients are obtained based on the principle of minimizing the control objective. Then, as an example, the seismic response of a valley under the excitation of 28 representative seismic waves which are randomly selected is calculated and the error due to Rayleigh damping model is analysed. The numerical result verifies the accuracy and applicability of the proposed method.https://doi.org/10.14311/CEJ.2019.03.0034rayleigh dampingdamping parameterscomplicated fieldseismic response analysis |
| spellingShingle | Huai-feng Wang Ru-lin Zhang A METHOD FOR DETERMINING RAYLEIGH DAMPING PARAMETERS OF COMPLEX FIELD Civil Engineering Journal rayleigh damping damping parameters complicated field seismic response analysis |
| title | A METHOD FOR DETERMINING RAYLEIGH DAMPING PARAMETERS OF COMPLEX FIELD |
| title_full | A METHOD FOR DETERMINING RAYLEIGH DAMPING PARAMETERS OF COMPLEX FIELD |
| title_fullStr | A METHOD FOR DETERMINING RAYLEIGH DAMPING PARAMETERS OF COMPLEX FIELD |
| title_full_unstemmed | A METHOD FOR DETERMINING RAYLEIGH DAMPING PARAMETERS OF COMPLEX FIELD |
| title_short | A METHOD FOR DETERMINING RAYLEIGH DAMPING PARAMETERS OF COMPLEX FIELD |
| title_sort | method for determining rayleigh damping parameters of complex field |
| topic | rayleigh damping damping parameters complicated field seismic response analysis |
| url | https://doi.org/10.14311/CEJ.2019.03.0034 |
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