Finite element model updating of the UCF grid benchmark using measured frequency response functions
| Autor: | Masoud Sanayei, Jesse D. Sipple |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Engineering
Frequency response Estimation theory business.industry Mechanical Engineering Aerospace Engineering Mixed finite element method Structural engineering Grid Finite element method Computer Science Applications Control and Systems Engineering Signal Processing Benchmark (computing) Boundary value problem business Algorithm Rotation (mathematics) Civil and Structural Engineering |
| Zdroj: | Mechanical Systems and Signal Processing. 46:179-190 |
| ISSN: | 0888-3270 |
| DOI: | 10.1016/j.ymssp.2014.01.008 |
| Popis: | A frequency response function based finite element model updating method is presented and used to perform parameter estimation of the University of Central Florida Grid Benchmark Structure. The proposed method is used to calibrate the initial finite element model using measured frequency response functions from the undamaged, intact structure. Stiffness properties, mass properties, and boundary conditions of the initial model were estimated and updated. Model updating was then performed using measured frequency response functions from the damaged structure to detect physical structural change. Grouping and ungrouping were utilized to determine the exact location and magnitude of the damage. The fixity in rotation of two boundary condition nodes was accurately and successfully estimated. The usefulness of the proposed method for finite element model updating is shown by being able to detect, locate, and quantify change in structural properties. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect