PFEM Analysis: Difference between revisions

From OpenSeesWiki
Jump to navigation Jump to search
(Created page with '* '''PFEM2D discretize Rectangle $startNodeTag $X1 $Y1 $hx $hy $angle $Nx $Ny $Ndf <-fix $fixList -mass $massList -vel $velList -boundary $boundaryList>''' ** Discretizes a recta...')
 
No edit summary
 
(5 intermediate revisions by the same user not shown)
Line 1: Line 1:
* '''PFEM2D discretize Rectangle $startNodeTag $X1 $Y1 $hx $hy $angle $Nx $Ny $Ndf <-fix $fixList -mass $massList -vel $velList -boundary $boundaryList>'''
[[FSI | < Back]]
** Discretizes a rectangular area in to nodes for subsequent triangulation and PFEM analysis
** '''startNodeTag''' -- tag of the first node that is created
** '''X1 Y1''' -- global X and Y coordinates of the lower left corner of the rectangle
** '''hx hy''' -- division length in the local x and y directions of the rectangle
** '''angle''' -- angle of rotation between the local x axis of the rectangle and the global X axis
** '''Nx Ny''' -- number of divisions in the local x and y directions of the rectangle
** '''Ndf''' -- number of degrees of freedom for each node that is created
** '''fixList''' -- list of fixity values applied to all nodes that are created (1 = fixed, 0 = free, default = "0 0")
** '''massList''' -- list of mass values applied to all nodes that are created (default = "0 0")
** '''velList''' -- list of initial velocity applied to all nodes that are created (default = "0 0")
** '''boundaryList''' -- list of codes for including boundary nodes on the sides of the rectangle (1 = include, 0 = omit, default = "1 1 1 1")
** The return value from this command is the tag of the last node created


<span id="pyPFEMAnalysis"></span>
'''analysis'''('' 'PFEM', dtmax, dtmin, gravity[, ratio]'') [[#pyPFEMAnalysis|¶]]


* '''PFEM2D fluid $nodeList <-append>'''
<blockquote>construct the PFEM Analysis object.</blockquote>
** Assigns nodes to be fluid nodes
** '''nodeList''' -- list containing the start and end nodes for assignment
** '''-append''' -- appends the nodes to the current set of fluid nodes (otherwise, overwrites the current set)




* '''PFEM2D structure $nodeList <-append>'''
{| class="wikitable"
** Assigns nodes to be structure nodes
|-
** '''nodeList''' -- list containing the start and end nodes for assignment
! rowspan="4"| Parameters:
** '''-append''' -- appends the nodes to the current set of structure nodes (otherwise, overwrites the current set)
|* '''dtmax''' (''float'') -  maximum time step
 
|-
 
|* '''dtmin''' (''float'') –  minimum time step
 
|-
''More commands will be documented soon'''
|* '''gravity''' (''float'') –  the gravity acceleration for fly-out nodes, up is positive.
|-
|* '''ratio''' (''float'') – the ratio for automatic reducing time step size.
|-
! |Returns:
|
|-
! |Return Type:
|
None
|}

Latest revision as of 18:35, 3 July 2017

< Back

analysis( 'PFEM', dtmax, dtmin, gravity[, ratio])

construct the PFEM Analysis object.


Parameters: * dtmax (float) - maximum time step
* dtmin (float) – minimum time step
* gravity (float) – the gravity acceleration for fly-out nodes, up is positive.
* ratio (float) – the ratio for automatic reducing time step size.
Returns:
Return Type:

None

Retrieved from "https://opensees.ist.berkeley.edu/wiki/index.php?title=PFEM_Analysis&oldid=12450"