Micro Plane Constitutive Model for Concrete
| Home | My Research |
This Work is Major Done by Mr. Miao Zhiwei
Micro Plane Constitutive Model for Concrete
Computational results show good agreement with the test, as well as outstanding nonlinear capacity
For MSC.MARC 2005 r2!
Program
download(Execuatable file) File1;
File2;
File3;
File4;
File5
Install guide
-
Install MSC.MARC 200r2
- "matcode.txt" contains the material data for concrete. The first line is the number of concrete material. The second line is the elastic modulus and compressive strength of concrete.
- Run "m4_28_public -j UniComp_job1"
Remarks
- This program is free for education and research purpose. If you have used this program in your research, please mention it in the reference.
- The maximum project size of this program is 10 elements. If you need a larger size version, please email to us: E-mail:luxinzheng@sina.com.
- If you have found any problem in the program, please notice us.
Paper download
Nonlinear
FE model for RC shear walls based on multi-layer shell element and microplane
constitutive model
Proc.
Computational Methods in Engineering And Science (EPMESC X),
Tsinghua University Press & Springer-Verlag, Aug. 2006, Sanya, Hainan,China,
2006, CDROM.
Abstract: Nonlinear simulations for structures under disasters have been widely focused on in recent years. However, precise modeling for the nonlinear behavior of reinforced concrete (RC) shear walls, which are the major lateral-force-resistant structural member in high-rise buildings, still has not been successfully solved. In this paper, based on the principles of composite material mechanics, a multi-layer shell element model is proposed to simulate the coupled in-plane/out-plane bending and the coupled in-plane bending-shear nonlinear behaviors of RC shear wall. The multi-layer shell element is made up of many layers with different thickness. And different material models (concrete or rebar) are assigned to various layers so that the structural performance of the shear wall can be directly connected with the material constitutive law. And besides the traditional elasto-plastic-fracture constitutive model for concrete, which is efficient but does not give satisfying performance for concrete under complicated stress condition, a novel concrete constitutive model, referred as microplane model, which is originally proposed by Bazant et al., is developed to provide a better simulation for concrete in shear wall under complicated stress conditions and stress histories. Three walls under static push-over load and cyclic load were analyzed with the proposed shear wall model for demonstration. The simulation results show that the multi-layer shell elements can correctly simulate the coupled in-plane/out-plane bending failure for tall walls and the coupled in-plane bending-shear failure for short walls. And with microplane concrete constitutive law, the cycle behavior and the damage accumulation of shear wall can be precisely modeled, which is very important for the performance-based design of structures under disaster loads.
Keywords: shear wall, nonlinear analysis, microplane, finite element, multi-layer shell element
Download
PDF version Here
 |
 |
|
Uniaixal Compression
|
Uniaxial Tension
|
|
 |
|
Biaxial Failure Envelope
|
Triaxial Compression
|
 |
 |
|
Hydrostatic Compression
|
Cycle Compression
|