Publications
Detailed Information
Force Identification for Nonlinear Structures using the Dynamic Response Sensitivity
DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | 김도년 | - |
dc.contributor.author | 이미영 | - |
dc.date.accessioned | 2017-07-14T03:44:30Z | - |
dc.date.available | 2017-07-14T03:44:30Z | - |
dc.date.issued | 2017-02 | - |
dc.identifier.other | 000000141378 | - |
dc.identifier.uri | https://hdl.handle.net/10371/123937 | - |
dc.description | 학위논문 (석사)-- 서울대학교 대학원 : 기계항공공학부, 2017. 2. 김도년. | - |
dc.description.abstract | Force identification is an inverse procedure that estimates the applied forces based on the measured dynamic responses. This paper introduces a novel force identification method for nonlinear finite element models via sensitivity of dynamic response with respect to the load parameters in the time domain. Unlike conventional state space method, the formulation introduced in this study is based on the implicit Newmark method and Newton-Raphson algorithm to solve nonlinear flexible dynamic problems. Since the sensitivities at respective discretized time step are evaluated in geometrically nonlinear framework, robust and accurate prediction of the exciting force in nonlinear problems can be made. In order to demonstrate the effectiveness and validity of the presented method, nonlinear floating beam and 3D shell problems with various loading conditions are provided in this paper. The results show that the proposed method can accurately determine the magnitude of the input forces even with the presence of the noise effect. | - |
dc.description.tableofcontents | Chapter 1. Introduction 1
Chapter 2. Method 3 2.1 The governing equation of motion 4 2.2 The sensitivity model 5 2.3 The recursive estimation 6 2.4 Time discretization for extreme conditions 8 Chapter 3. Numerical examples 10 3.1 A nonlinear beam 10 3.2 Multi-body system 15 3.2.1 Pre-stressed 16 3.2.2 Large rotation 20 3.3 3D shell 22 Chapter 4. Conclusion 23 Bibliography 25 Abstract in Korean 26 | - |
dc.format | application/pdf | - |
dc.format.extent | 778801 bytes | - |
dc.format.medium | application/pdf | - |
dc.language.iso | en | - |
dc.publisher | 서울대학교 대학원 | - |
dc.subject | force identification | - |
dc.subject.ddc | 621 | - |
dc.title | Force Identification for Nonlinear Structures using the Dynamic Response Sensitivity | - |
dc.type | Thesis | - |
dc.description.degree | Master | - |
dc.citation.pages | 26 | - |
dc.contributor.affiliation | 공과대학 기계항공공학부 | - |
dc.date.awarded | 2017-02 | - |
- Appears in Collections:
- Files in This Item:
Item View & Download Count
Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.