civl7008 seismic analysis for building structures
TRANSCRIPT
![Page 1: CIVL7008 Seismic Analysis for Building Structures](https://reader031.vdocuments.site/reader031/viewer/2022020710/5865cc821a28abd75a8c35a3/html5/thumbnails/1.jpg)
CIVL7008 Seismic Analysis forBuilding Structures
Lec-04 Modal Analysis of MDOF System
Lec-04 Modal Analysis of MDOF system
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Lec-04 Modal Analysis of MDOF system
What is MDOF System ?
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Lec-04 Modal Analysis of MDOF system
What is MDOF System ?
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Lec-04 Modal Analysis of MDOF systemModal Analysis of 2 DOF System
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Lec-04 Modal Analysis of MDOF system
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Lec-04 Modal Analysis of MDOF system
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Lec-04 Modal Analysis of MDOF system
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Lec-04 Modal Analysis of MDOF system
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Lec-04 Modal Analysis of MDOF system
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Lec-04 Modal Analysis of MDOF system
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Lec-04 Modal Analysis of MDOF system
Use Excel table to Eigenvalue
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Lec-04 Modal Analysis of MDOF system
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Lec-04 Modal Analysis of MDOF system
Use Excel to Plot Mode Shape
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Lec-04 Modal Analysis of MDOF system
Etabs or SAP2000 model compute mode shape
![Page 15: CIVL7008 Seismic Analysis for Building Structures](https://reader031.vdocuments.site/reader031/viewer/2022020710/5865cc821a28abd75a8c35a3/html5/thumbnails/15.jpg)
Lec-04 Modal Analysis of MDOF system
Etabs or SAP2000 model compute mode shape
![Page 16: CIVL7008 Seismic Analysis for Building Structures](https://reader031.vdocuments.site/reader031/viewer/2022020710/5865cc821a28abd75a8c35a3/html5/thumbnails/16.jpg)
Lec-04 Modal Analysis of MDOF system
Etabs or SAP2000 model compute mode shape
![Page 17: CIVL7008 Seismic Analysis for Building Structures](https://reader031.vdocuments.site/reader031/viewer/2022020710/5865cc821a28abd75a8c35a3/html5/thumbnails/17.jpg)
Lec-04 Modal Analysis of MDOF system
Etabs or SAP2000 model compute mode shape
![Page 18: CIVL7008 Seismic Analysis for Building Structures](https://reader031.vdocuments.site/reader031/viewer/2022020710/5865cc821a28abd75a8c35a3/html5/thumbnails/18.jpg)
Lec-04 Modal Analysis of MDOF system
Etabs or SAP2000 model compute mode shape
![Page 19: CIVL7008 Seismic Analysis for Building Structures](https://reader031.vdocuments.site/reader031/viewer/2022020710/5865cc821a28abd75a8c35a3/html5/thumbnails/19.jpg)
Lec-04 Modal Analysis of MDOF system
Etabs or SAP2000 model compute mode shape
![Page 20: CIVL7008 Seismic Analysis for Building Structures](https://reader031.vdocuments.site/reader031/viewer/2022020710/5865cc821a28abd75a8c35a3/html5/thumbnails/20.jpg)
Lec-04 Modal Analysis of MDOF system
Etabs or SAP2000 model compute mode shape
![Page 21: CIVL7008 Seismic Analysis for Building Structures](https://reader031.vdocuments.site/reader031/viewer/2022020710/5865cc821a28abd75a8c35a3/html5/thumbnails/21.jpg)
Lec-04 Modal Analysis of MDOF system
Normalization
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Lec-04 Modal Analysis of MDOF system
How about more than 4 storey Building (Simplified model) ?
Transform the Matrix D to Matrix B
Assume
Take
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Lec-04 Modal Analysis of MDOF system
How about more than 4 storey Building (Simplified model) ?
Relationship between {x} and {z}, which use to compute mode shape
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Lec-04 Modal Analysis of MDOF system
Mode Shape Calculation Program
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Lec-04 Modal Analysis of MDOF system
Mode Shape Calculation Program
![Page 26: CIVL7008 Seismic Analysis for Building Structures](https://reader031.vdocuments.site/reader031/viewer/2022020710/5865cc821a28abd75a8c35a3/html5/thumbnails/26.jpg)
Lec-04 Modal Analysis of MDOF system
Mode Shape Analysis of Shell Element (High Freq mode)
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Lec-04 Modal Analysis of MDOF system
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Lec-04 Modal Analysis of MDOF system
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Lec-02 Vibration of SDOF System
Lec-04 Modal Analysis of MDOF System