Fiber Section: Difference between revisions

From OpenSeesWiki
Jump to navigation Jump to search
No edit summary
(documenting -GJ option)
 
(13 intermediate revisions by 3 users not shown)
Line 3: Line 3:
This commnand allows the user to construct a FiberSection object. Each FiberSection object is composed of Fibers, with each fiber containing a UniaxialMaterial, an area and a location (y,z). The command to generate FiberSection object contains in '''{ }''' the commands to generate all the fibers in the object. To construct a FiberSection and populate it, the following command is used:
This commnand allows the user to construct a FiberSection object. Each FiberSection object is composed of Fibers, with each fiber containing a UniaxialMaterial, an area and a location (y,z). The command to generate FiberSection object contains in '''{ }''' the commands to generate all the fibers in the object. To construct a FiberSection and populate it, the following command is used:


{| style="background:yellow; color:black; width:800px"  
{| style="background:lime; color:black; width:800px"  
| ''' section Fiber $secTag {'''
| ''' section Fiber $secTag <-GJ $GJ> {'''
|-
|-
| '''[[fiber Command | fiber]]...'''
| '''[[fiber Command | fiber]]...'''
Line 17: Line 17:
|}
|}


----


NOTES:
# The command to generate a FiberSection contains in '''{ }''' the commands to generate all the fibers in the section.
# The patch and layer commands can be used to generate multiple fibers in a single command.
----


{|
{|
|  style="width:150px" | '''$sectTag ''' || unique tag among FiberSections
|  style="width:150px" | '''$secTag ''' || unique tag among sections
|-
|-
| '''$tsTag''' || the tag of the time series to be used in the load pattern
| '''$GJ''' || linear-elastic torsional stiffness assigned to the section (optional, default = no torsional stiffness)
|-
|-
| '''[[nodalLoad Command| load]]...''' || command to nodal load
| '''[[fiber Command | fiber]]...''' || command to generate a single fiber
|-
|-
| '''[[eleLoad Command| eleLoad]] ...''' || command to generate elemental load
| '''[[patch Command | patch]]...''' || command to generate a number of fibers over a geometric cross-section
|-
|-
| '''[[sp Command| sp]] ...''' || command to generate single-point constraint
| '''[[layer Command | layer]]...''' || command to generate a row of fibers along a geometric-arc
|-
 
|}
|}




NOTES:
# The command to generate a FiberSection contains in '''{ }''' the commands to generate all the fibers in the section.
# The patch and layer commands can be used to generate multiple fibers in a single command.
# In an element recorder you can ask a FiberSection for its 'deformations', 'forces', 'forceAndDeformation', 'fiber $fiberNum $matArg1 ..', 'fiber $yLoc $zLoc $matTag $matArg1 '
----
----


<uml>
<uml>
FiberSection 0- Fiber
FiberSection o- Fiber
</uml>
</uml>


----
----
Code Developed by: <span style="color:blue"> fmk </span>
Code Developed by: <span style="color:blue"> Michael H. Scott, Oregon State University </span>

Latest revision as of 21:04, 23 January 2014



This commnand allows the user to construct a FiberSection object. Each FiberSection object is composed of Fibers, with each fiber containing a UniaxialMaterial, an area and a location (y,z). The command to generate FiberSection object contains in { } the commands to generate all the fibers in the object. To construct a FiberSection and populate it, the following command is used:

section Fiber $secTag <-GJ $GJ> {
fiber...
patch...
layer...
...
}


$secTag unique tag among sections
$GJ linear-elastic torsional stiffness assigned to the section (optional, default = no torsional stiffness)
fiber... command to generate a single fiber
patch... command to generate a number of fibers over a geometric cross-section
layer... command to generate a row of fibers along a geometric-arc


NOTES:

  1. The command to generate a FiberSection contains in { } the commands to generate all the fibers in the section.
  2. The patch and layer commands can be used to generate multiple fibers in a single command.
  3. In an element recorder you can ask a FiberSection for its 'deformations', 'forces', 'forceAndDeformation', 'fiber $fiberNum $matArg1 ..', 'fiber $yLoc $zLoc $matTag $matArg1 '

<uml> FiberSection o- Fiber </uml>

Code Developed by: Michael H. Scott, Oregon State University

Retrieved from "https://opensees.ist.berkeley.edu/wiki/index.php?title=Fiber_Section&oldid=11071"