| Autor: |
Se Hyung Kim, Koutromanos, Ioannis |
| Předmět: |
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| Zdroj: |
Journal of Structural Engineering; Dec2016, Vol. 142 Issue 12, p1-14, 14p, 2 Charts, 10 Graphs |
| Abstrakt: |
The hysteretic stress-strain response of steel reinforcement can significantly affect the performance of reinforced concrete (RC) structures. Additionally, the possibility of inelastic buckling and fracture of longitudinal bars can have a negative impact on the ductility of RC flexural members. This paper presents a uniaxial material model to describe the inelastic behavior of reinforcing steel under cyclic loading. As a starting point, an existing hysteretic law is employed, which is capable of capturing the material behavior in the absence of buckling and rupture. One issue with this existing law is the need for an iterative stress calculation. A series of enhancements to the hysteretic law are established, including the formulation and implementation of a noniterative stress update procedure and the capability to efficiently account for local inelastic buckling and rupture due to low-cycle fatigue. The proposed material model is validated using the results of experimental tests. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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