Modeling of concrete under high strain rate conditions using nonlinear finite element method
by
Çankaya, Mehmet Alper, author.
Title
:
Modeling of concrete under high strain rate conditions using nonlinear finite element method
Author
:
Çankaya, Mehmet Alper, author.
Personal Author
:
Çankaya, Mehmet Alper, author.
Physical Description
:
viii, 88 leaves: illustrarions, charts;+ 1 computer laser optical disc.
Abstract
:
In this study, a comprehensive experimental and numerical study was undertaken to model concrete under high strain rate conditions. Concrete cylinder specimens, all obtained from the same batch, were tested both under ststic and high strainrate conditions. 15 eylinder specimens were tested under 3.55x10-5, 3.23x10-4, 2.97x10-3 1/s strain rates, whereas three identical specimens were tested using a Split Hopkinson Pressure Bar SHPB) tes setup under 235, 245, 260 1/s strain rates. Used SHPB setup was modified to include quartz crystal stress developed in the specimens werw directly obtained, eliminating common isssues regarding stress readings in a conventional setup. Stress-strain behavior and other material parameters that would be necessary for numerical modeling were obtained under various strain rates. Test samples were modeled using an explicit finite element program LS-DYNA, using Holmquist-Johnson-Cook model with experimentally obtained model parameters. To verify the obtained parameters further, drop tower test on concrete plates were also performed and modeled. Numerical modeling of both SHPB samples and concrete plates were successful in capturing the observed behavior. The study also provided the literature with a reliable test data with complete parameters that can be used for further studies in the area.
Subject Term
:
Finite element method.
High strength concrete.
Added Author
:
Saatcı, Selçuk,
Added Corporate Author
:
İzmir Institute of Technology. Civil Engineering.
Added Uniform Title
:
Thesis (Doctoral)--İzmir Institute of Technology: Civil Engineering.
İzmir Institute of Technology: Civil Engineering--Thesis (Doctoral).
Electronic Access
:
Library | Material Type | Item Barcode | Shelf Number | Status |
---|
IYTE Library | Thesis | T001617 | TA439 .C22 2017 | Tez Koleksiyonu |
IYTE Library | Supplementary CD-ROM | ROM2782 | TA439 .C22 2017 EK.1 | Tez Koleksiyonu |