Buy article PDF
The purchased file will be sent to you
via email after the payment is completed.
US$ 35
|
Computers and Concrete Volume 19, Number 4, April 2017 , pages 375-385 DOI: https://doi.org/10.12989/cac.2017.19.4.375 |
|
|
|
Meso scale model for fiber-reinforced-concrete: Microplane based approach |
||
Željko Smolčić and Joško Ožbolt
|
||
| Abstract | ||
| In the present paper experimental and numerical analysis of hook-ended steel fiber reinforced concrete is carried out. The experimental tests are performed on notched beams loaded in 3-point bending using fiber volume fractions up to 1.5%. The numerical analysis of fiber reinforced concrete beams is performed at meso scale. The concrete is discretized with 3D solid finite elements and microplane model is used as a constitutive law. The fibers are modelled by randomly generated 1D truss finite elements, which are connected with concrete matrix by discrete bond-slip relationship. It is demonstrated that the presented approach, which is based on the modelling of concrete matrix using microplane model, able to realistically replicate experimental results. In all investigated cases failure is due to the pull-out of fibers. It is shown that with increase of volume content of fibers the effective bond strength and slip capacity of fibers decreases. | ||
| Key Words | ||
| concrete; steel fibers; 3D finite element analysis; meso-scale; microplane model; bond-slip | ||
| Address | ||
| Željko Smolčić: Faculty of Civil Engineering of University of Rijeka, Radmile Matejčić 3, Rijeka, Croatia Joško Ožbolt: 1) Faculty of Civil Engineering of University of Rijeka, Radmile Matejčić 3, Rijeka, Croatia 2) Institut für Werkstoffe im Bauwesen, Universität Stuttgart, Pfaffenwaldring 4, Stuttgart, Germany | ||