Cantilever beam - Modifying dimensions

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asandip
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Joined: 09 May 2019, 22:06
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Cantilever beam - Modifying dimensions

Post by asandip »

Hello,

I am looking to change the dimensions of the cantilever beam (beam3d.grd) from "loaded elastic beam" tutorial/Elmer GUI. I tried modifying the subcell sizes in .grd file -

##### ElmerGrid input file for structured grid generation ######
Version = 210903
Coordinate System = Cartesian 3D
Subcell Divisions in 3D = 1 1 1
Subcell Sizes 1 = 0.8590488504
Subcell Sizes 2 = 0.53719646
Subcell Sizes 3 = 10.77308811

But when I click on model summary, the bounding box lists the the original dimension of the cantilever beam - 1 m x 0.1 m x 0.05 m (L X w X t). How can I modify the dimensions?

Thank you for any information you can provide.

- Anjali
Attachments
case.sif
(2.28 KiB) Downloaded 262 times
beam3d.grd
(736 Bytes) Downloaded 266 times
kevinarden
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Joined: 25 Jan 2019, 01:28
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Re: Cantilever beam - Modifying dimensions

Post by kevinarden »

I used ElmerGrid to convert your file to an Elmer Mesh and had no issue. You may be loading the old mesh because ElmerGrid puts the new mesh in a subfolder.

FINITE ELEMENT MESH
Mesh dimension: 3
Leading element dimension: 3
Nodes: 6073
Volume elements: 1200
Surface elements: 796
Edge elements: 1592
Point elements: 0

ELEMENT TYPES
820: 1200
408: 796
203: 1592

BOUNDING BOX
X-coordinate: [ 0 , 0.859049 ]
Y-coordinate: [ 0 , 0.537196 ]
Z-coordinate: [ 0 , 10.7731 ]

GENERAL
Equations: 0
Materials: 0
Boundary conditions: 0
Body properties: 0

VOLUME BODIES
Body 1: 1200 volume elements
Undetermined: 0
Total: 1 volume bodies

SURFACE BODIES
Undetermined: 0
Total: 0 surface bodies

EDGE BODIES
Undetermined: 0
Total: 0 edge bodies

SURFACE BOUNDARIES
Boundary 1: 200 surface elements
Boundary 2: 150 surface elements
Boundary 3: 200 surface elements
Boundary 4: 150 surface elements
Boundary 5: 48 surface elements
Boundary 6: 48 surface elements
Undetermined: 0
Total: 6 surface boundaries

EDGE BOUNDARIES
Undetermined: 0
Total: 0 edge boundaries
asandip
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Joined: 09 May 2019, 22:06
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Re: Cantilever beam - Modifying dimensions

Post by asandip »

Thanks, Kevin!

I am still novice when it comes to Elmer. Could you tell me how you used Elmer Grid to convert the file to an Elmer mesh? Also, which sub folder is it stored in? Thanks again!
kevinarden
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Re: Cantilever beam - Modifying dimensions

Post by kevinarden »

From the command line in the directory you have the grd file you can type the command

ElmerGrid

without any options it will print the help file to tell you what the options are

grd to elmer mesh is

ElmerGrid 1 2 meshname (where mesh name is whatever your grd file is named)

it puts the Elmer mesh in a subfolder named meshname
asandip
Posts: 92
Joined: 09 May 2019, 22:06
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Re: Cantilever beam - Modifying dimensions

Post by asandip »

Your suggestions helped me resolve the issue. Thanks!
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