CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > ANSYS Meshing & Geometry

[ANSYS Meshing] Unable to refine mesh around an elliptical crack

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Search this Thread Display Modes
Old   March 22, 2017, 01:48
Question Unable to refine mesh around an elliptical crack
New Member
Join Date: Mar 2017
Posts: 1
Rep Power: 0
halfprof is on a distinguished road
Hi there,

This is my first topic and i really want to give thanks to this forum.

I am using Ansys v15 to simulate an external axial elliptical crack in a pipe submitted to internal pressure. The crack is inserted using the fracture meshing "elliptical crack" available in ansys.

As it can be seen from the pictures, the meshing is just fine before inserting the crack. After inserting the crack, the meshing is overwritten and it becomes coarsed around the crack front.

Mesh information: Advanced meshing on Proximity fixed.

I got a warning message that says that the mesh is coarse around the crack so I need to resize it.

Can someone help me with this ?
halfprof is offline   Reply With Quote

Old   September 8, 2018, 09:46
New Member
José Rodrigues Pereira Corrêa
Join Date: Nov 2017
Posts: 4
Rep Power: 8
josejjpc is on a distinguished road
hello Halfprof, do you finalize your model? I am doing the same estudy and when the results it is solved I receive a error mensager "A fracture result is specified by time instead of by set. If the time lies between two result sets, no interpolation is performed. Instead, there are two possibilities: (1) if there are no mesh changes, the lower set applies; (2) if there are mesh changes, the closest set applies"

I receive the value 1157,^(0,5), but in my calculation should be close to 1608,92 according Abaqus or 1726,55 according API standard.

someone could help me?

semi eliptical external crack dimension (longitudinal direction):
63,2mm major radius
15,8mm minor radius
pipe external radius: 1158,8mm
pipe internal radius: 1139,8mm
pipe lenght: 800mm
Internal pressure: 3.5Mpa
josejjpc is offline   Reply With Quote


crack, mesh, pipe

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
[Other] Contribution a new utility: refine wall layer mesh based on yPlus field lakeat OpenFOAM Community Contributions 58 December 23, 2021 02:36
Star CCM Overset Mesh Error (Rotating Turbine) thezack Siemens 7 October 12, 2016 11:14
[ANSYS Meshing] How to refine mesh in ANSYS 14 like CFX MESH Method in ANSYS 12 nsakib520 ANSYS Meshing & Geometry 0 October 5, 2012 01:34
[snappyHexMesh] snappyHexMesh won't work - zeros everywhere! sc298 OpenFOAM Meshing & Mesh Conversion 2 March 27, 2011 21:11
[snappyHexMesh] external flow with snappyHexMesh chelvistero OpenFOAM Meshing & Mesh Conversion 11 January 15, 2010 19:43

All times are GMT -4. The time now is 22:41.