| Author: | Gao, Shengquan |
| Title: | Characterization of hysteretic models for S355 steel materials under cyclic loads |
| Advisors: | Chan, Tak-ming (CEE) |
| Degree: | M.Sc. |
| Year: | 2017 |
| Subject: | Hong Kong Polytechnic University -- Dissertations Steel, Structural -- Testing Structural stability |
| Department: | Faculty of Construction and Environment |
| Pages: | x, 67 pages : color illustrations |
| Language: | English |
| Abstract: | The mechanical of carbon steel S355 under the cyclic loading is investigated in this dissertation. A total of 30 specimens is carried out in the experimental tests including standard tensile tests, monotonic tests and cyclic tests. The data and pattern of monotonic and cyclic loading are used to analyze and identify the characteristics of S355 steel corresponding to the hysteretic behaviour in aspect of ductility and the capacity of energy dissipation. The further deep researching of S355 steel is to fit hysteresis skeleton curve with different loading protocols and prove the accuracy of the proposed models in this dissertation. The parameters of the Ramberg-Osgood model and the combined isotropic/kinematic hardening model are calculated and fitted carefully using regression analysis based on the data from the experimental tests. The test results indicate that the carbon steel S355 has a good ductility and ability of energy dissipation. The steel S355 obtains the higher stress under the dynamic loading comparing with the counterpart under the static loading but sacrifice ductility due to the cyclic hardening. The finite element software ABAQUS is used subsequently to simulate the experimental tests. The results obtained from ABAQUS reflect that finite element model could give a reasonable simulation. The key features of material behavior under cyclic conditions indicate that S355 is the promising structural material, which has an enormous worth to research and adopts it in practice. |
| Rights: | All rights reserved |
| Access: | restricted access |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 991022142757303411.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 3.88 MB | Adobe PDF | View/Open |
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