1. Analyzing of RC Plate Elements Subject to Plane Stresses
Introducing of
Simple Version of WCOMD for
Analyzing of RC Plate Elements Subject to Plane Stresses
M. Soltani M.
Concrete Lab., Dec. 2000

2. Introduction:
Reinforced concrete structures can be considered as an assemblage of simpler elements, if the behavior of the component elements is understood, then the behavior of the complete structure can be predicted more accurately.
Bridge Structure
Beam
Shear Wall
Containment Vessel
Tow dimensional, rectangular reinforced concrete element subject to plane stress.

3. Test of specimens under biaxial stress
Experiment Methods:
Link
Shear Key
RC PANEL
(SPECIMEN)
Jack
Test of specimens under biaxial stress
Direct tension
Tension stiffening
Test of panels
Jack and Link assembly to apply shear ,tension and compression to reinforced concrete elements

4. Modeling method: = + ~ The reinforced concrete plate model
The constitutive law for concrete
The reinforced concrete plate model
The constitutive law for reinforcing bars = +
Reinforced concrete
Cracked concrete
Reinforcing bars
FEM analysis of RC Structures
1. Using the equilibrium and compatibility equations.
For checking the constitutive model at the element level under different loading condition and combination of lads (biaxial stress, Cyclic loading,…)
2. Using FEM and analyzing of plate element by considering the adequate boundary conditions ~

5. You can get more information from the User Guide
Analyzing of plate elements subject to plane stresses:
WCOMD-SJ
Simple version (PANEL)
1. 2D analysis of plate elements subject to different loading condition.
2. Analysis subject to reversed cyclic loading.
3. Load Control Analysis.
Capability of program:
Load Control Analysis:
Loads (Tension, compression and shear) is incrementally applied on the panel
You can get more information from the User Guide
and solved examples

6. A Sample for Input Data: y
The panel (Collins and Vichico test 1982)
f'c=195 ft=21
Rx=1.785% Fy=4580
Ry=1.524% Fy=4200
Loading= Pure Shear x
Analysis of Panel Subject to Pure Shear (PV22, Collins 1982)
00020
CONC
STXY
ELEM
LOAD
STEP
LOAD
END
Input file name+.RCS (Strain Stress relationship of RC in X and Y dir.)
Input file name+.STL (Strain-Stress relationship of Steel in Steel Dir.)
Output files:
Input file name+.CON
Input file name+.RCS

7. Output results:

8. Reversed Cyclic Loading:
STEP
LOAD
STEP
STEP
END

9. Some other examples: Direct Tension
Effect of Reinforcement Ratio on Average
Strain-Stress Relationship of Steel
Output file name= Input file name +. stl
F'c= Ft=20
Fy=4000

10. Effect Tension Stiffening Factor on Average Strain-Stress
Relationship of Steel
F'c= Ft=20
Fy=4000

11. Biaxial Stresses: P
Analysis of panel subject to biaxial Stresses, Reinforcement angel=45 Deg. T
Tensile Stress-Strain in X dir.
Stress-Strain of concrete normal to crack