Transcript GTSTRUDL Version 27

GTSTRUDL Version 27
This latest version of GTSTRUDL includes numerous new features,
feature enhancements, error corrections, and prerelease features.
GTSTRUDL is developed and supported at:
The Computer Aided Structural Engineering (CASE) Center
School of Civil Engineering
Georgia Institute of Technology
Atlanta, Georgia 30332-0355
U.S.A.
Tel:
+1-404-8942260
Fax:
+1-404-8948014
email Address:
[email protected]
Demonstrations 1 and 2 provide step-by-step descriptions of using
GTSTRUDL to respectively create a structure using the Model
Wizard and the GTMenu graphical user interface.
GTSTRUDL 27
DEMONSTRATION 2
1. This Demonstration 2 Slide Show demonstrates the
use of the GTMenu graphical user interface to create a
simple Plane Truss structure, and then using GTMenu to
display the structure and analysis results.
2. The slides in this Demonstration Slide Show are
advanced by clicking the left mouse button, or by using
the Down/Up Arrow keys, or by clicking the PgDn/PgUp
(page down/up) keys.
3. The Slide Show may be exited by clicking the right
mouse button
4. Since GTMenu will occupy the full screen, the Tutorial
Slide Show screen can be displayed alternately with the
GTMenu screen by clicking the Alt - Tab keys at the same
time.
Plane Truss Structure of
Demonstration 2
5 MTons
4
2
4
6
7
1
5m
5 MTons
8
2
1
3
3
5
15 MTons
5
10 MTons
YG
5m
6m
XG
Material Steel
Member Properties
Loads
Members AX (cm2)
1
2
11
1-4
6, 7
5, 8
600
900
700
=
=
=
Self Weight
Applied Joint Loads
1 + 2 (Gravity Load)
Initiating GTSTRUDL 27
GTSTRUDL may be initiated from the Start menu by clicking
Start - Programs - GTSTRUDL 27 - GTSTRUDL 27 as
follows:
Starting GTSTRUDL Directly in GTMenu
When GTSTRUDL is initiated, this GT STRUDL StartupWizard
opening dialog will appear with the default working directory in the
Working Directory Dialog Area. The working directory may be
changed if desired (e.g., D:\Userdir).
Click the GTMenu option, and then click the OK button which opens
the main GT STRUDL output window , and then opens the
GTMenu graphical user interface.
Select the Units-Length-Meters menu option to
change the length unit to Meters.
Select the Units-Force-Mtons menu option to change
the force unit to Metric Tons (Mtons).
Creating the Structural Model Beginning with Joint
Coordinates
Select the Create-Joints-Only menu option. The
GTMenu Structural Modeling Tool menu will appear.
Select Input Coordinates to permit the input of the
coordinates of joints.
In the Input Coordinates data entry box, and for each joint in
sequence, enter the coordinates in the Enter Coordinates data
box followed by the Enter key as follows:
Joint 1, type:
Joint 2, type:
Joint 3, type:
Joint 4, type:
Joint 5, type:
0.0
0.0
5.0
5.0
11.0
0.0
5.0
0.0
5.0
0.0
Click the Store button at the lower right of the Input Coordinates
dialog box. This will store the five input joints.
Click the Redraw button in the upper menu bar to redraw the five
joints on the screen in a scale where all five joints will be visible.
Create Member Incidences and Assign Material
Properties
Select the Create-Members Only menu option in order to
specify the incidences of the truss members.
In the Create Members dialog box, select the
Material Group Assignment.
In the Material Properties dialog box, select
Steel, and then click the Done box.
In the Create Members dialog box, while the Current Material
Properties is set to Steel, select:
Plane Truss (the XY Global plane is the default plane),
Define Start & End, and
Generate Members.
The cursor will appear and it is then used to define the
incidences of each of the eight plane truss members as
described below.
Place the cursor on joint 1 and click the left mouse button.
Drag the cursor to joint 2 and click the left mouse button
which creates Member 1.
Place the cursor on joint 3 and click the left mouse button.
Drag the cursor to joint 4 and click the left mouse button which creates
Member 2.
Place the cursor on joint 1 and click the left mouse button.
Drag the cursor to joint 3 and click the left mouse button which creates
Member 3.
Place the cursor on joint 2 and click the left mouse button.
Drag the cursor to joint 4 and click the left mouse button which creates
Member 4.
Place the cursor on joint 3 and click the left mouse button.
Drag the cursor to joint 5 and click the left mouse button which creates
Member 5.
Place the cursor on joint 3 and click the left mouse button.
Drag the cursor to joint 2 and click the left mouse button which
creates Member 6.
Place the cursor on joint 1 and click the left mouse button.
Drag the cursor to joint 4 and click the left mouse button which
creates Member 7.
Place the cursor on joint 5 and click the left mouse button.
Drag the cursor to joint 4 and click the left mouse button which
creates Member 8.
Click the right mouse button to exit the cursor.
The incidences of all 8 Plane Truss members have been
created.
Click the Store button. This will cause the 8 Plane Truss
members to be stored.
Assign Member Cross-Section Properties
The member cross-section area properties of the
8 Plane Truss members will be defined next.
Select the Create - Material and Member
Properties - Member Properties menu options.
Select the Prismatic option in the Member
Properties Group dialog box. The Prismatic
Properties dialog box will appear.
Select the Units-Length-Centimeters menu
option to change the length unit to CM.
In the Prismatic Properties dialog box, type the
property name as Prop 1, and the value of AX as
600.
Click the Store New button.
In the Prismatic Properties dialog box, type the
property name as Prop 2, and the value of AX as
700.
Click the Store New button.
In the Prismatic Properties dialog box, type the
property name as Prop 3, and the value of AX as
900.
Click the Store New button.
In the Prismatic Properties dialog box, click the
Done button.
Select the Edit-Joints, Members and
Elements-Member Data menu options. The
Edit Member Data dialog box will appear.
Select the Properties option in the Edit Member Data
dialog box. The cursor will appear.
Use the cursor to select members 1, 2, 3, and 4. Then
click the right mouse button to exit the cursor. The
Member Properties dialog box will appear.
Select the member property option called Prop 1 pris AX
600 in the Member Properties dialog box, and click the
Done button.
Members 1, 2, 3, and 4 will be assigned the member
property group called Prop 1 (i.e., Prismatic AX = 600
cm 2).
Use the cursor to select members 5 and 8. Then click
the right mouse button to exit the crsor. The Member
Properties dialog box will appear.
Select the member property option called Prop 2 pris AX
700 in the Member Properties dialog box, and click the
Done button.
Members 5 and 8 will be assigned the member property
group called Prop 2 (i.e., Prismatic AX = 700 cm 2).
Use the cursor to select members 6 and 7. Then click
the right mouse button to exit the crsor. The Member
Properties dialog box will appear.
Select the member property option called Prop 3 pris AX
900 in the Member Properties dialog box, and click the
Done button.
Members 5 and 8 will be assigned the member property
group called Prop 3 (i.e., Prismatic AX = 900 cm 2).
Click the right mouse button to exit the cursor.
Click the Right Mouse button to exit the cursor.
Member properties for all eight Plane Truss
members have been assigned.
Click the Redraw button.
Define Support Boundary Conditions
Select the Edit - Joint Data menu options.
The Edit Joint Data dialog box will appear.
In the Edit Joint Data dialog box, select the
Support & Release option. The cursor will
appear.
Use the cursor to select Joint 1. Click the
Right Mouse button. The Edit Support &
Release dialog box will appear.
Click the Done button, and Joint 1 is now a
Fully Restrained Plane Truss support joint.
Use the cursor to select Joint 3. Click the
Right Mouse button. The Edit Support &
Release dialog box will appear.
Select the FX Release option.
Click the Done button, and support Joint 3 is
now a Horizontal Roller Truss support joint.
Click the Right Mouse button.
Define Self Weight and Live Loads
Select the Create - Loads - Activate
Independent Load menu options.
The Create Indep Load dialog box will appear.
The Self Weight (dead load) of the structure will
now be defined as Loading 1: Type the load
Name: “1”
Type the load Description: “Self Weight”
Click the Store New button.
Select the Self Weight of members load option.
In the Self-wt of mem dialog box, select the Negative Y
Load Direction, and use the default load factor 1.00 in the
-Y Direction, and click the Generate Loads button. This
will cause the self weight of all Plane Truss members to be
automatically calculated in GTMenu, and then each time an
analysis is performed. One half of each Plane Truss
member’s self weight will be applied in the negative Global
Y-direction at each joint upon which the Plane Truss
member is incident.
Click the Yes button in response to the question: “Display
generated loads? A graphical display of the generated self weight
will be displayed. These loads can also be displayed later by using
the Display - Loads menu option.
In the Gravity Loads dialog box, click the Active Load button.
This will cause a return to the Create Indep Load dialog box so
that another load may be defined.
The applied joint forces on the structure will now
be defined as Loading 2: Type the load
Name: “2”
Type the load Description: “Applied Joint
Loads”
Click the Store New button.
Select the Joint Loads load option.
Click the Generate Load button. The cursor will appear.
Place the cursor on Joint 2 and click the Left Mouse button.
Then place the cursor on Joint 4 and click the Left Mouse
button.
Click the Right Mouse button. The Individual
Joint Load Values dialog box will appear.
Enter the value of FX as 5.0, and click the Done
button. The concentrated joint forces of 5.0
MTONS acting on joints 2 and 4 will be displayed.
Click the Generate Load button again. The cursor will
appear. Place the cursor on joint 5 and click the Left
mouse button.
Click the Right Mouse button. The Individual Joint
Load Values dialog box will appear.
Enter the value of FX as 15 and the value of FY as -10
and click the Done button. The concentrated joint forces
of 15 and -10 MTONS acting on joint 5 will be displayed.
Select the Display - Loads menu options.
Click the Select Load button.
Select the Load 2 Applied Joint Loads menu
option.
Click the Done button.
Click the Display Load button.
Define Loading Combinations
Loading Combinations 11 and 12 will now be defined. Select
the Create-Loads-Define Dependent Load menu options.
The Create/Edit Dependent Load menu will appear.
Type the Name of one loading combination as
“11", and its Description as “Gravity Loads”.
Then click the Store New button.
Define Loading Combination 11 specifications by making
the following sequence of picks:
Select Independent Loading 1. The default load factor is
1.0. Click the Add Component button.
Select Independent Loading 2. The default load factor is
1.0. Click the Add Component button.
Loading Combination 11 Specifications 1 1.0 2 1.0 are
now defined. Click the Done button.
Click the Redraw menu option.
SAVE the Current State of the Model
From time to time during a GTMenu model generation
session, it is advisable to save and protect the current state
of the information created.
Select the File - Save Model menu options. This will cause
the Save File dialog box to appear.
Enter the file name (Tutorial2-ppt) of the save file
in which the current model data will be saved. The
save file name will be Tutorial2-ppt.gts.
Click the Save button.
Select File - End GTMenu to exit GTMenu.
Select the YES option which will retain the model
created in GTMenu.
Select the Analysis - Static Analysis (Stiffness
Analysis) menu option to perform a linear static
analysis for all currently active loading conditions.
Select the Results - Static (Text Output) - Output
Ordering-By Joints/Members menu options to
order analysis results by joints or members rather
than by loading condition.
Select the Results - Static (Text Output) Member End Forces menu options to list member
forces for all currently active loading conditions.
Select the All members option, and click the OK
button, to list analysis member end forces, ordered
by member, for all currently active loading
conditions.
To print the text output on a printer device, select
the View-Options menu option. The GTSTRUDL
Options dialog box will appear.
In the GTSTRUDL Options dialog box, select the Printing
folder, and then select the Automatically fit font size for
paper option. This option will automatically select a font size
to fit the specified print margins and the default paper size
that is defined in the system printer settings.
In addition, specify paper margin sizes (in inches), and select
the Print black & white option which will assure clear
printing on black & white laser printers.
Select the
print icon, and the member end forces
text output will be printed to the laser printer according to the
format options set above. Click the OK button in the Print
dialog box.
Select the
interface.
icon to enter the GTMenu graphical user
Select the Label-Display and Label Settings
menu options. The Display & Label Entities
dialog box will be displayed.
Select the Label All Joints and Members.
Click the Redraw and Done buttons.
Select the Force X diagram option.
Click the Select Load button. The Current Loads
dialog box will be displayed.
Select the Loading 2 Applied Joint Loads
option. Click the Done button.
Select the Display and Add to List option, and
the Force X diagram for Load 2 will be drawn on
each Plane Truss member.
Select the File-End GTMenu menu option to exit
GTSTRUDL.
Select the File-Exit menu option to exit GTSTRUDL.
Select the default Finish option by clicking the OK
button.
Select the No menu option to exit GTSTRUDL
without saving commands and text output to a file.
This GTSTRUDLTutorial structure analysis is now
terminated.
GTSTRUDL 27
DEMONSTRATION 2 – Completed
This Demonstration 2 Slide Show demonstrated the use of the
GTMenu graphical user interface to create a simple structure,
and then to graphically display the structure and analysis
results.
GTSTRUDL 27 includes the following features:
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GTMenu graphical modeling
Static frame and finite element analysis
Dynamic Analysis
Advanced Analysis including Nonlinear Static and
Dynamic Analysis, Cable Analysis, Superelements, and
other advanced analysis features
Steel design of frame structures
Reinforced concrete design of frame structures
Data Base Exchange (DBX)
Offshore jacket analysis and design
GTTABLE for the creation of tables of steel shape names
and properties
GTSTRUDL 27
DEMONSTRATION 1
The Demonstration 1 Slide Show (accessed from the Start
Menu as shown below) demonstrates the use of the Model
Wizard to create a simple structure using a predefined
modeling template, and then using the GTMenu graphical
user interface of GTSTRUDL to graphically display the
structure and analysis results.
GTSTRUDL 27
TUTORIALS 1, 2, and 3
Tutorials 1, 2, and 3 which are described in the GTSTRUDL
User Guide: Getting Started, are additional examples of
the use of GTSTRUDL, and may be accessed from the online Help facility in GTSTRUIDL as shown below.