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147 solid vierendeel study #149

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Nov 7, 2022
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147 solid vierendeel study #149

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ea679a9
update vierendeel #147
jobinhio Oct 21, 2022
4f5cf78
add report from solid toolbox #136
jobinhio Oct 21, 2022
08f8a98
add imagesprefix support for #147 as described in #144
jobinhio Oct 21, 2022
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5 changes: 1 addition & 4 deletions examples/modules/csm/examples/vierendeel-truss/Plate.cfg
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Original file line number Diff line number Diff line change
Expand Up @@ -4,10 +4,7 @@ directory=toolboxes/solid/vierendeel-truss/Plate/P2
case.discretization=P2 #P1,P2

[solid]
filename=$cfgdir/Plate.json

mesh.filename=$cfgdir/Plate.geo
gmsh.hsize=0.002
json.filename=$cfgdir/Plate.json

on.type=elimination_symmetric

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43 changes: 35 additions & 8 deletions examples/modules/csm/examples/vierendeel-truss/Plate.json
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Original file line number Diff line number Diff line change
@@ -1,10 +1,34 @@
{
"Name": "Solid Mechanics ",
"ShortName":"Solid",
"Metadata":
{
"version": "1",
"author": ["vincentchabannes","prudhomm","lberti","jobinhio"],
"date": "23/09/2022",
"references":[""]
},
"Models":
{
"equations":"Elasticity"
"solid":
{
"setup":
{
"equations":"Elasticity"
}
}
},
"Meshes":
{
"solid":
{
"Import":
{
"filename":"$cfgdir/Plate.geo",
"hsize":"0.002"
}
}
},
"Materials":
{
"omega": //Aluminium
Expand All @@ -16,16 +40,16 @@
},
"BoundaryConditions":
{
"displacement":
"solid":
{
"Dirichlet":
"displacement":
{
"fixed":
{
"expr":"{0,0,0}"
}
},
"Neumann_scalar":
"normal_stress": // Neumann_scalar
{
"force":
{
Expand All @@ -36,10 +60,13 @@
},
"PostProcess":
{
"Exports":
{
"fields":["displacement","von-mises-criterion","tresca-criterion","principal-stresses"]
}
"solid":
{
"Exports":
{
"fields":["displacement","von-mises-criterion","tresca-criterion","principal-stresses"]
}
}
// TODO : Currently doesn't work
// "Measures":
// {
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30 changes: 23 additions & 7 deletions examples/modules/csm/pages/vierendeel-truss/index.adoc
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Original file line number Diff line number Diff line change
@@ -1,12 +1,28 @@
= Vierendeel truss
:page-vtkjs: true

:uri-data: https://github.com/feelpp/toolbox/blob/master/examples/modules/csm/examples
:uri-data-edit: https://github.com/feelpp/toolbox/edit/master/examples/modules/csm/examples
:imagesprefix:
ifdef::env-github,env-browser,env-vscode[:imagesprefix: ../../assets/images/]

== Introduction

A Vierendeel truss is a lightweight deep beam or girder structural concept.
The goal of this exercise is to determine the deformation and stress state of the aluminium Vierendeel truss shown below, in particular the maximum stress around the lightening holes.

== Running the case

The command line to run this case is


[[command-line2D]]
[source,sh]
----
feelpp_toolbox_solid --config-file Plate.cfg
----

NOTE: The report of the execution of the command above is available xref:vierendeel-truss/solid-informations.adoc[here].
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informations -> information


== Model/Geometry

First, we need to build the model, which we are going to do using the Gmsh-software.
Expand All @@ -17,7 +33,7 @@ Dimensions in the Gmsh-model are in meters.

The finished geometry and the meshed model with 2 mm mesh-size:

image:vierendeel-truss/image1.png[image,width=578,height=289]
image:{imagesprefix}vierendeel-truss/image1.png[image,width=578,height=289]


== Materials and boundary conditions
Expand All @@ -34,9 +50,9 @@ The beam is made of steel, so we need to use the following data:

Both ends of the truss are fixed and the force is applied to the upper surface. In this case we will apply max. 10000 N force to the upper surface (named „force”) as a function of x.

image:vierendeel-truss/image2.png[image,width=568,height=286]
image:{imagesprefix}vierendeel-truss/image2.png[image,width=568,height=286]

image:vierendeel-truss/image3.png[image,width=509,height=279]
image:{imagesprefix}vierendeel-truss/image3.png[image,width=509,height=279]

== Results

Expand All @@ -47,15 +63,15 @@ Maximum displacement: 1.498e-07 m
NOTE: In the lower picture a scale factor was used to make the displacement easy to see. The distorted state is indicated by the wireframe model.


image:vierendeel-truss/image4.png[]
image:{imagesprefix}vierendeel-truss/image4.png[]

image:vierendeel-truss/image5.png[]
image:{imagesprefix}vierendeel-truss/image5.png[]

=== Von-Mises Criterions

Maximum stress: 1.046e+05 Pa

image:vierendeel-truss/image6.png[]
image:{imagesprefix}vierendeel-truss/image6.png[]

=== Model 3D

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