Existing API Scripts - Femap y NX Nastran | Lo último en ... · Existing API Scripts . ... Who am...

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Andy Haines – Senior Applications Engineer

Existing API Scripts


Siemens PLM Software

Who am I?

What you will learn

Femap capabilities

Demonstrations

Benefits of this topic

How to learn more

Agenda Existing API Scripts



Stress Linearization Tool

Why the tool was desired • ASME Code based on the observed failure of Pressure Vessels • Bending Stress less dangerous than Membrane Stress • SCL – Stress Classification Line

• Requirements – Perpendicular Inside and Out • Stress Linearization takes the component stresses along this line and

computes – • Membrane • Bending • Membrane + Bending • Peak

• Good Reference – http://www.pveng.com/FEA/FEAGeneral/NutsBoltsStress/Nuts_and_Bolts_Stress_Linearization.pdf

http://www.pveng.com/FEA/FEAGeneral/NutsBoltsStress/Nuts_and_Bolts_Stress_Linearization.pdf

http://www.pveng.com/FEA/FEAGeneral/NutsBoltsStress/Nuts_and_Bolts_Stress_Linearization.pdf




API Features • Compiled Code with Visual

Basic Express • Needs to be installed, not

simply copied onto machine • Run from the Start Menu (All

Programs, Siemens, FEMAP Stress Linearization Tool)

• Tool appears as a “dockable pane” in the FEMAP GUI

Developed by Mark Sherman




Using the API • Open model with results on solid elements first • Start FEMAP Stress Linearization Tool • Select an Output Set from drop-down • Click “Select Nodes” button to select two nodes to specify “path” of SCL • The SCL will appear on screen and persist until model is moved in any way • Examine Graph of Results (curves for Stress, Membrane Stress, Max

Membrane plus Bending, Membrane + Bending, and Bending Stress) • Depending on your needs, use “Control Options” to switch between von

Mises and Tresca Stress and optionally include “Full Component Bending” • Information and Graph are automatically posted to the clipboard for use in a

report and/or allows you to resize the graph for more detailed inspection *Tip – To redraw the SCL, simply change from von Mises to Tresca and then back (or vice versa) or toggle “Full Component Bending” on/off




FEMAP Stress Linearization Tool All Data Calculated as von Mises Stresses All stress tensor components used to calculate linearized bending stress.




Stress Linearization between Nodes 6074 and 5859 Data from FEMAP Model - C:\FEMAP Symposium\FSLT_Example.modfem From FEMAP Output Set 4 - Titled - Step 1, Sub 4, - 1. The Linearized Membrane Stress is calculated as 302.622 The Linearized Bending Stress is calculated as 2218.85 The Linearized Maximum Combined Membrane and Bending Stress is calculated as 2323.259 The Maximum von Mises Stress along the SCL is 3069.236



Hide and Show Entities

Why the tool was desired • Users hoped FEMAP could

have a similar tool to the “Plot/Erase” command in PATRAN

API Features

• API script developed using API Programing Window

• Uses a number of different subroutines

• User-defined dialog box • Uses Multi-Group Display

Developed by Chip Fricke




Using the API to “Show” entities (default behavior) • Open model and run command. • Select type of entity to “Show”, optionally toggle on the “Include Related

Entities” option, then click OK. • Use standard entity selection dialog box to select entities of chosen entity

type, then click OK.

Original Model Select “Surfaces” as the Entity Type and toggle on “Include Related Entities”

Only the selected surfaces and related entities are now displayed

Tip - If command is used again to “Show”, only the entities selected in that use of the command will be shown




Using the API to “Hide” entities • Select type of entity, toggle on “Hide Selected Entities”, and optionally toggle

on the “Include Related Entities” option, then click OK. • Use standard entity selection dialog box to select entities of chosen entity

type, then click OK.

Original Model Select “Surfaces” as the Entity Type and toggle on “Include Related Entities”

Any entity not chosen to “Hide” will remain displayed

Tip - If command is used again to “Hide”, the entities already hidden by the command will remain hidden and the newly selected entities will then also be hidden.




Using the API to “Reset View (Clear Hidden and Shown Entities)” • Select “Reset View (Clear Hidden and Shown Entities)” option, then click OK

to restore the view to the “original” state before the command was used



Thicken By Data Surface

Why the tool was desired • If plate thickness needs to be varied in multiple directions, this was difficult

or simply not possible to do with “Modify, Update Other, Adjust Plate”

API Features • API script developed using API Programing Window • Allows use of any type of Data Surface, but “Along Coordinates”, “Between

Coordinates”, “Tabular Data Surface”, or “Arbitrary 3-D Data Surface” are the types which should yield the best results

• Creates all of the needed property cards to attain variable thickness

Developed by Dan Hinkle




Using the API • Not required, but having all of the elements start off being a single plate

property is recommended • Run the script, select desired elements, choose a Data Surface that has

already been defined, then answer “Yes/No” to “OK to Minimize Properties (Slower)” question

4 Point Bilinear Data Surface Locations and values shown in model




Model shown with Plate Thickness on and contoured using the “View, Advanced Post, Contour Model Data” command, with “Plane Element Thickness” selected



Calculate and Thicken

Why the tool was desired • If plate thickness needs to be varied to match surfaces of a solid, this was

again difficult or not possible using “Modify, Update Elements, Adjust Plate” or even “Thicken by Data Surface” API

API Features • API script developed using API Programing Window • Creates all of the needed property cards to attain variable thickness • Any number of surfaces may be selected and the script will determine the

appropriate thickness at each node using a “ray-firing” technique • Stores thickness data on a temporary Data Surface

Developed by Dan Hinkle




Using the API • Not required, but having all of the elements start off being a single plate

property is recommended • Position mesh in the “middle” (use “Middler” API, if needed) • Run the script, select desired elements, choose upper and lower “bounding

surfaces”, define a default minimum thickness values, then answer “Yes/No” to “OK to Minimize Properties (Slower)” question Solid Geometry of fictitious “fin” Shell mesh at “middle” of the “fin”




6 “Bounding Surfaces” selected on top

Shell mesh of “fin” shown with updated thickness

6 “Bounding Surfaces” selected on bottom



Copy Functions Between Models

Why the tool was desired • Sometimes you may need to copy

functions from one open model into other open models

API Features


Using the API

• The “Source” model and all “Destination” models must be open

• Run the script, select any number of functions, then any number of “Destination” models.

Developed by Patrick Kriengsiri



Embed Multiple Faces

Why the tool was desired • “Geometry, Curve – From Surface…” tools such as “Pad” and “Washer” are

useful when trying to create a mapped mesh on surfaces…embedding those surfaces may also be useful for creating a mapped hex mesh

API Features


Using the API • Surfaces should be subdivided before using this tool • Run the script, then select only the surfaces to embed using the standard

entity selection dialog box

Developed by Andrew Jabola, Saratech



Embed Multiple Faces

Original Geometry – All One Part Surfaces selected for embed operation After command, multiple solids are now ready for sizing and hex meshing



Selective Display of Node IDs

Why the tool was desired • Users wanted to show all the

nodes, but only have the IDs shown for selected nodes

API Features • Uses Text objects to create the

temporary Node labels • Could be modified to do the

same for other entity types

Developed by Andrew Jabola, Saratech



Selective Display of Node IDs

Using the API • Run the script to open the “Select Node ID Manager” dialog box • Optionally, click “Specify Color” to select a color for the labels from the

FEMAP Color Palette • Click “Select Nodes” to use the standard entity selection dialog box to select

the nodes • When done with the temporary labels, use the command again and click

“Clear Node IDs”



Create Multiple Load Sets from Multiple CSV files

Why the tool was desired • User had over 100 comma-separated value files created by MATLAB

containing nodal IDs and load values, each of which needed to be imported into FEMAP to create an individual load set.

API Features

• API script developed using API Programing Window • Cycles through all files in a selected directory • Load Set Titles match CSV file names

Using the API

• Place all CSV files in a single directory • Run script, then select any CSV file in directory to set directory path

Developed by Dan Hinkle and Andy Haines



Create Multiple Load Sets from Multiple CSV files

Values from Load Set 1

Values from Load Set 4



AutoBoltMaker

Why the tool was desired • Using “Custom Tools, Meshing, Hole-to-Hole Fastener” for multiple holes

can be quite time consuming.

API Features • API script developed using API Programing Window

Using the API

• Surfaces need to be meshed before using this tool • Run the script and answer question to enter a radius for the “bolt” or to

select an existing beam property (used for every fastener created during each use of the command)

• Select any number of Curves using the Standard Entity Selection dialog box for Curves (will not use anything other than circular arcs)

Developed by Andy Haines



AutoBoltMaker

Select any number of curves In this area of the model

Only curves which make up a pair of circular loops will be selected

Rigid Spiders and a beam element using the selected property or entered radius will be created

A variation of this command is also available which allows selection of a CBUSH Property with a reference coordinate system, then creates 2 rigid spiders and a coincident node CBUSH element equidistant from the independent node of each newly created RBE2



Coincident Node CBUSH Coordinate System Display

Why the tool was desired • For coincident node CBUSH elements, a Reference Coordinate System

must be set on the property. This script displays the coordinate system directions at each CBUSH location.

API Features

• Code has checking to make sure only Spring/Damper Elements which reference a “CBUSH” property AND have a “Ref CSys” defined are used

• Appearance of arrows on triads (Line or Solid) is based on Color Mode for Coordinate Systems in View Options.

Using the API to “Show” the triads • Run the script and examine triads for each CBUSH • Different colors used for triads representing rectangular and spherical




Coincident Node CBUSH Coordinate System Display

Using different API to “Remove” the triads • Use “Custom Tools, Model Query, CBUSH CSys Display Reset” command

to remove the triads Rectangular CSys shown in X Direction = Red, Y Direction = Green, Z Direction = Blue

Spherical CSys shown in Radial Direction = Yellow Theta Direction = Orange, Phi Direction = Cyan



Laminate Next Ply and Laminate Prev Ply - Improved

Why the tool was desired • Users want to be able to look at the same output vector on either the Next

or Previous ply in a model without have to select it from the Select PostProcessing Data dialog box…also works when looking at Global Plies

API Features

• Simply adds or subtracts 200 to the current output vector, which signifies it is on the next or previous ply

• Similar to one shipped with FEMAP and can be found in “Custom Tools, PostProcessing…”, but this one also does Global Plies

Using the API • Recommend creating icons on a toolbar to aid is use • Click appropriate icon to go to next or previous ply

Developed by Mark Sherman, altered by Andy Haines



Linear Combination using Base Output Set

Why the tool was desired • User had many output sets, wanted to be able to choose 1 set as the “base”

set, then linearly combine the “base” set with any number of other selected output sets, one at a time

API Features

• Creates multiple output sets (“Base” set + 1 “Other” set) using the feOutputProcessLinearCombination call, one of several that now exist which make it easier to use the functionality of “Model, Output, Process”

Using the API • Model needs multiple output sets • Run script, select “Base” set, then select any number of other output sets




Group from Freebody

Why the tool was desired • User wanted to create groups based on the elements of a “Freebody” or the

nodes and elements of an “Interface Load”

API Features • Represents use of the Freebody Object

Using the API

• Run script, select a Freebody or Interface Load and a group will be created automatically.

• Alternate version of this script, “Groups from All Freebodies”, creates a individual group for each Freebody entity in a model




Standard Analysis (Statics or Modes)

Why the tool was desired • Model is ready to be analyzed and you want to launch a Nastran job using a

single command without seeing a single dialog box

API Features • API script developed using API Programing Window • Shipped with FEMAP and can be accessed via Custom Tools toolbar • Good example of how to use the API to create and modify the Analysis Set

Manager • Slight modifications can be made to run your “standard” analysis

Using the API • Model has everything needed for a “standard” static or modal analysis run • Choose “Custom Tools, Standard Analysis…” command


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