Institute of Physics of Materials AS CR, v. v. i. > Projects > Influence of material properties of stainless steels on reliability of bridge structures
Influence of material properties of stainless steels on reliability of bridge structures
| Investigator | doc. Ing. Stanislav Seitl, Ph.D. |
| Number of Project | 20-00761S |
| Internal Project Number | 320110 |
| Agency | Grantová agentura České republiky |
| Duration | 2020-01-01 - 2022-12-31 |
Anotace |
| New knowledge on the material properties and reliability of load-bearing bridge structures constructed from stainless steel will be obtained within the framework of the project. The limit states will be analysed using numerical models based primarily on the non-linear finite element method. The input parameters of the computational models will be real material characteristics obtained from experiments and processed into histograms. The lifetime of bridge members will be theoretically investigated using linear fracture mechanics and geometry functions proposed using fatigue experiments in laboratory. The reliability analysis will include statistical, sensitivity and probability analysis. Interesting findings can be expected for very slender members with imperfections that generally can have higher stress, lower resistance and faster fatigue degradation in comparison with carbon steel bars. New findings are expected from laboratory experiments investigating fatigue degradation processes that have not yet been observed in existing bridges, which are at the beginning of their life cycle. |
