act pressure vessels automatic path creation r150 v3

7/24/2019 ACT Pressure Vessels Automatic Path Creation R150 v3

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Pressure Vessels:

Automatic Paths & LinearizedStress Results Creation

Pressure_Vessels_Automatic_Paths_

Creation_ ACTx R150


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ACT allows customization in the Mechanical application :

Replace command snippets with interactive objects

Create customized Loads / BCs

Create customized Results

Ability to connect a third party solver in a standard Workbench process

ACT Pressure Vessels: Automatic Paths Creation extension is a

customization made with ACT to automate paths & linearized stress results

inspired from pressure vessels regulation norms. The extension consists ofone XML file (Configures the UI content) and one python script

(Implements the extension functionality).

If you need more information about ACT please contact your sales

representative.

ACT: Application Customization Toolkit


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ACT Extension Library

Great place to get started Extensions made available in either

binary format (.wbex file) or binary plusscripted format (python and XML files)

Scripted extensions are great examples

Links to ACT documentation and training

material

Goals for an ACT developers forum

ANSYS Customer Portal support.ansys.com

A library of helpful ACT extensions

available to any ANSYS customer

Roughly one dozen available

More being added continually


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Download the Pressure Vessels ACTx

The Pressure Vessels: Automatic Paths Creation ACT Extension

for ANSYS 15.0 is available for download on the ACT ExtensionLibrary of the Customer Portal:

https://support.ansys.com/AnsysCustomerPortal/en_us/Downloads/Extension

+Library/15.0+ACT+Library

Please pay attention to paragraph 9 of the CLICKWRAP

SOFTWARE LICENSE AGREEMENT FOR ACS EXTENSIONS regarding

TECHNICAL ENHANCEMENTS AND CUSTOMER SUPPORT (TECS):

TECS is not included with the Program(s).So to report an issue or provide your feedback in regards to this

extension please contact:

David Roche: [email protected]


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Installing ACT Extensions

Installing from WB Project page:

1. Select the Install Extension option

2. It will open a file dialog to select a *.wbex file

3. The extension is installed


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This ACT extensions provides several ways to create pathsand linearized stress results:

Pressure Vessels Extension

Create a path between two

selected nodes or vertices(for instance visualizing a

stress contour plot)

Create a path starting at a

selected node and normalto the node face

Create paths starting at the

maximum stress over anamed selection and

normal to the face at the

maximum location


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This options allows you to create a path between

two selected nodes or vertices.

You can for instance select two nodes while

visualizing a stress contour plot and select one of

the toolbar buttons to create the corresponding

path and a given linearized stress result.

Path Between Two Nodes or Vertices


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This option creates a path starting from the selected

node to going through the body using the direction

normal to the face at the node location.

1) Create a path starting from the node and going

through the structure thickness following the

direction normal to the surface at the first extremity

of the path,

2) Calculate the location where the path goes out

the structural component,

3) Create the path,

4) Create the corresponding linearized stress resultscoped to the created path for the selected StressCriterion.

Normal Paths Creation at Node


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Snap to mesh nodes option isnt used in

this case so the second extremity of the path

can not exactly lie on the surface where the

path goes out the structure.

In such case right click on the created path

and manually use Snap to mesh nodes.

Normal Paths Creation at Node


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The Pressure Vessels: Automatic Paths Creation ACT extension

allows to automate the creation of paths and linearized stress

results following the stress analysis method inspired from

regulation norms like CODAP or ASME.

Indeed the path needs to start from the location of a maximumstress criterion (Equivalent Stress, Stress Intensity) and have to

pass through the structure thickness following a direction

normal to the starting surface point.

Normal Paths Creation at Max Stress

The path starts from the

location of the maximum

stress criterion and is normal

to the surface on this point.


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Pressing the toolbar button will display a dialog box allowing to

enter user inputs and to launch the paths & linearized stress results

creation.


Currently Selected Analysis

Named Selection Key

Activate Snap to Mesh Node Option

Choose Stress Criterion

Choose Load Step

Run Paths & Linearized Stress Results

Creation


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When Create Paths And Results button is clicked

the following steps are performed:

1) Loop over the named selections (containing

edges in 2D or faces in 3D analyses),

2) Check if the Named Selection Key is present inthe named selection name,

3) If yes, find the location of the maximum valueof the chosen Stress Criterion on this named

selection for a selected Load Step End Time,


Note: The selected analysis has to be resolved.


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4) Create a path starting from this location andgoing through the structure thickness following thedirection normal to the surface at the first extremity

of the path,

5) Calculate the location where the path goes out

the structural component,

6) Create the path and use Snap To Mesh Node

option to tie the second extremity of the path to the

closest node if requested,

7) Create the corresponding linearized stress result

scoped to the created path for the selected Stress

Criterion and Load Step End Time.



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The extension works in 2D and 3D with linear

or quadratic elements (midside nodes).

Snap To Mesh Node option is recommended

if you want to avoid that the second extremity

to not exactly lie on the surface where thepath goes out the structure. If the mesh isnt

too coarse the path orientation shouldnt

really be impacted.

If the maximum value of the selected criterionis located on a sharp edge, the evaluation of

the path orientation will be incorrect.

Normal Paths Creation:Tips & Limitations

act pressure vessels automatic path creation r150 v3

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