APPROACH OF DAMAGE IDENTIFICATION BASED ON STIFINESS CHANGE RATIO BY NEUMANN SERIES EXPANSION
A direct solution procedure for structural damage identification based on stiffness change ratio was proposed.Utilized with Neumann series expansion,the damaged structural stiffness change ratio matrix was derived,in a form of matrix product. The stiffness loss of the damaged element was treated as...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Journal of Mechanical Strength
2017-01-01
|
| Series: | Jixie qiangdu |
| Subjects: | |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2017.03.035 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841535217110614016 |
|---|---|
| author | LIU TieJun ZHAO Xiang WANG FengHui |
| author_facet | LIU TieJun ZHAO Xiang WANG FengHui |
| author_sort | LIU TieJun |
| collection | DOAJ |
| description | A direct solution procedure for structural damage identification based on stiffness change ratio was proposed.Utilized with Neumann series expansion,the damaged structural stiffness change ratio matrix was derived,in a form of matrix product. The stiffness loss of the damaged element was treated as accessional dummy stiffness,and then the extent of element damage obtained by transformations of stiffness change ratio matrix. The method contributes a concise expression and higher computational efficiency. Numerical simulation example of a 3D aircraft wing frame model was performed via the proposed method,and the influence of test noise and incomplete test modal was considered,the results show that the identified values are accurate and stable. |
| format | Article |
| id | doaj-art-ecbda80d53504a239b5e951f7a4422c5 |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2017-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-ecbda80d53504a239b5e951f7a4422c52025-01-15T02:34:20ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692017-01-013970270630598561APPROACH OF DAMAGE IDENTIFICATION BASED ON STIFINESS CHANGE RATIO BY NEUMANN SERIES EXPANSIONLIU TieJunZHAO XiangWANG FengHuiA direct solution procedure for structural damage identification based on stiffness change ratio was proposed.Utilized with Neumann series expansion,the damaged structural stiffness change ratio matrix was derived,in a form of matrix product. The stiffness loss of the damaged element was treated as accessional dummy stiffness,and then the extent of element damage obtained by transformations of stiffness change ratio matrix. The method contributes a concise expression and higher computational efficiency. Numerical simulation example of a 3D aircraft wing frame model was performed via the proposed method,and the influence of test noise and incomplete test modal was considered,the results show that the identified values are accurate and stable.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2017.03.035Damage identificationDamage indexModal flexibilityNeumann series expansion |
| spellingShingle | LIU TieJun ZHAO Xiang WANG FengHui APPROACH OF DAMAGE IDENTIFICATION BASED ON STIFINESS CHANGE RATIO BY NEUMANN SERIES EXPANSION Jixie qiangdu Damage identification Damage index Modal flexibility Neumann series expansion |
| title | APPROACH OF DAMAGE IDENTIFICATION BASED ON STIFINESS CHANGE RATIO BY NEUMANN SERIES EXPANSION |
| title_full | APPROACH OF DAMAGE IDENTIFICATION BASED ON STIFINESS CHANGE RATIO BY NEUMANN SERIES EXPANSION |
| title_fullStr | APPROACH OF DAMAGE IDENTIFICATION BASED ON STIFINESS CHANGE RATIO BY NEUMANN SERIES EXPANSION |
| title_full_unstemmed | APPROACH OF DAMAGE IDENTIFICATION BASED ON STIFINESS CHANGE RATIO BY NEUMANN SERIES EXPANSION |
| title_short | APPROACH OF DAMAGE IDENTIFICATION BASED ON STIFINESS CHANGE RATIO BY NEUMANN SERIES EXPANSION |
| title_sort | approach of damage identification based on stifiness change ratio by neumann series expansion |
| topic | Damage identification Damage index Modal flexibility Neumann series expansion |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2017.03.035 |
| work_keys_str_mv | AT liutiejun approachofdamageidentificationbasedonstifinesschangeratiobyneumannseriesexpansion AT zhaoxiang approachofdamageidentificationbasedonstifinesschangeratiobyneumannseriesexpansion AT wangfenghui approachofdamageidentificationbasedonstifinesschangeratiobyneumannseriesexpansion |