Modeling Of RC Shear Wall in ABAQUS/CAE

28 Pages·2014·0.99 MB·English

Modeling Of RC Shear Wall in ABAQUS/CAE
Renish Dhaduk,G.V,Rama Rao,Sharad Purohit

A step-by-step procedure for modeling and analysis of RC Shear Wall in ABAQUS is
explained.

Problem:
.
Table A-1 Basic Dimensions
Height 3000mm
Width 1560mm
Thickness 200mm
Slab 2500x2500x500mm
Raft 2500x2500x400mm
Extra Axial Load on Shear Wall 8.5 ton
Clear Cover 30mm
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Figure B–1 Detailed Detailing Of Shear Wall

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To create the RC Shear Wall:
1. Start Abaqus/CAE
2. From the Start Session dialog box that appears, select Create Model Database. If you
are already in an Abaqus/CAE session, select File New from the main menu bar.
3. Select File Set Work Directory
4. In the Part Module click (or double-click the Parts container in the Model Tree) to
create a new part.
The Create Part dialog box appears. Abaqus/CAE also displays text in the prompt area
near the bottom of the window to guide you through the procedure.
You use the Create Part dialog box to name the part; to choose its modeling space, type,
and base feature; and to set the approximate size. You can edit and rename a part after
you create it; you can also change its modeling space and type but not its base feature.
5. Name the part Wall. Accept the default settings of a three-dimensional, deformable body
and a solid, extruded base feature. In the Approximate size text field, type 300.
6. Click Continue to exit the Create Part dialog box.
7. To sketch the profile of the Wall, you need to select the rectangle drawing tool .
8. In the viewport, sketch the rectangle using the following steps:
a. You will first sketch a rough approximation of the beam and then use constraints
and dimensions to refine the sketch. Select any two points as the opposite corners
of the rectangle.
b. Click mouse button 2 anywhere in the viewport to exit the rectangle tool.
Note: If you are a Windows user with a 2-button mouse, press both
mouse buttons simultaneously whenever you are asked to press mouse
button 2.
c. The Sketcher automatically adds constraints to the sketch (in this case the four
corners of the rectangle are assigned perpendicular constraints and one edge is
designated as horizontal).
d. Use the dimension tool to dimension the top and left edges of the rectangle.
The top edge should have a horizontal dimension of 1560 mm, and the left edge
should have a vertical dimension of 3000 mm. When dimensioning each edge,
simply select the line, click mouse button 1 to position the dimension text, and
then enter the new dimension in the prompt area.
e. The final sketch is shown in Figure B–2.
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Figure B–2 Sketch of the rectangle.

Because you are creating an extruded part, Abaqus/CAE displays the Edit Base
Extrusion dialog box for you to select the depth. Optional parameters to modify the extrusion
shape are also available. In the Depth field, erase the default value and type a value of 200.
Click OK to accept this value.
Abaqus/CAE displays an isometric view of the new part, as shown in Figure B–3.
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Figure B–3 Isometric view of the wall.

Before you continue the tutorial, save your model in a model database file.
. From the main menu bar, select File Save. The Save Model Database As
dialog box appears.
a. Type a name for the new model database in the File Name field, and click OK.
You do not need to include the file extension; Abaqus/CAE automatically
appends .cae to the file name.
Abaqus/CAE stores the model database in a new file and returns to the Part
module. The title bar of the Abaqus/CAE window displays the path and name of
the model database. You should always save your model database at regular
intervals (for example, each time you switch modules).
f. Same way create other parts as per dimension given in data.
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1) Top slab
2) Bottom Raft
3) Vertical Bar in wall
4) Horizontal Bar in wall
5) X-Direction Bar in top slab
6) Z-Direction Bar in top slab
7) X-Direction Bar in bottom raft

4. Creating a Material
To define a material:
1. In the Property module, click (or double-click the Materials container in the Model
Tree) to create a new material.
2. Name the material Steel. Use the menu bar under the browser area of the material editor
to reveal menus containing all the available material options. Some of the menu items
contain submenus; for example, Figure below shows the options available under the
Mechanical Elasticity menu item. When you select a material option, the appropriate
data entry form appears below the menu.
Figure B–7 Submenus available under the Mechanical menu.

3. From the material editor's menu bar, select Mechanical Elasticity Elastic.
Abaqus/CAE displays the Elastic data form.
4. Type a value of 27386.13 for Young's modulus and a value of 0.18 for Poisson's
ratio(For M30 Grade concrete) in the respective fields, as shown in Fig. Use [Tab] to
move between cells.
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Figure B–8 Entering data values for the elastic material properties.

5. For plasticity Properties, Mechanical Plasticity Plastic

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5. Same way enter properties for steel rebar.
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Plastic Properties:
Stress(MPa) Strain Stress(MPa) Strain
13.5 0 391.39 0.0023
26.092 0.0001 417.48 0.0025
52.185 0.00025 443.57 0.003
78.28 0.0005 449.7 0.0035
104.373 0.000625 454.66 0.004
130.46 0.00075 457.92 0.005
156.55 0.000875 459.88 0.0088
182.647 0.001 459.9 0.009
208.739 0.00125 459.92 0.0091
234.83 0.0013 462.49 0.01
260.924 0.0015 466.4 0.0175
287.0172 0.0016 467.71 0.0275
313.11 0.00175 469.66 0.02875
339.2 0.0019 478.144 0.03
365.29 0.0021 570 0.4

5. Defining and Assigning Section Properties
You define the properties of a part through sections. After you create the section, you can use
one of the following two methods to assign the section to the part in the current viewport:
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