INTEGRATION OF MSC PATRAN WITH CAD PACKAGES · UNIGRAPHICS CAD MODEL IMPORT Set Unigraphics as the Source Select desired UG part file Optional filtering (Unigraphics Options…) of

S3-1

Copyright 2010 MSC.Software Corporation

INTEGRATION OF MSC PATRAN WITH CAD PACKAGES

S3-2Copyright 2010 MSC.Software Corporation


Introduction

● This SimAcademy session is intended for the Academic audience and

beginning user and covers the basics of File Import

● File/Import allows for the importation of model files from a number of

different sources, such as a Patran database, Patran 2.5 neutral file, MD

Nastran input file format, or one of several CAD formats such as:

● CATIA

● PROENGINEER

● UNIGRAPHICS

● PARASOLID

● ACIS

● IGES FILE

● PATRAN NEUTRAL FILE

● STEP FILE

● Once the model is imported, you can use mesh, use the core editing

tools in PATRAN if you need to, or use Feature Recognition to

change/delete features such as holes, fillets and chamfers


Supported CAD Versions For PATRAN 2010

Source: PATRAN 2010 Release Guide


Where to Find Documentation & Updates

● SimCompanion (http://simcompanion.mscsoftware.com)

● Click on “Product Info and Docs”

● Product Updates

● https://mscsoftware.subscribenet.com

http://simcompanion.mscsoftware.com/

https://mscsoftware.subscribenet.com/


Installation of CAD Interfaces in PATRAN


FILE IMPORT OPTIONS


FILE IMPORT OPTIONS (Cont.)

Geometry kernel type

CAD part

Standard format


CATIA CAD MODEL IMPORT

● Several types of CATIA files can be imported● CATIA V4 Model: model file, e.g. dogbone.model

● CATIA V5 CATPart: part file, e.g. catbone.CATPart

● CATIA V5 CATProduct: product file, e.g. crockbone.CATProduct

● CATXPRES File: output file, e.g. otherbone.cat



● CATIA V4 Model, CATIA Options… include● Import to Parasolid: Yes

● Imported geometry will be Parasolid type geometry

● Solid Type

● Select simple (6 faces) or B-rep solid

● Trimmed Surface Type

● Select simple (4 edges) or general trimmed

● Import NoShow Entities: Yes

● CATIA V4 entities classified as NoShow will be imported

● Import Attributes

● If Yes, attributes associated to the geometry will be

imported. If No, the import performance will be

improved.

● Entity Layers

● All layers, or selected layers, are imported

● Create Groups from Layers

● Creates Patran groups from CAD layers automatically

● Group name: prefix_Ln

CATIA V4 Model



● CATIA V4 Model, CATIA Options… include● Import to Parasolid: Yes (continued)

● Group Classification

● Displays dialog box for directing entities to Patran groups

● Model Units

● Allows the model units to be over-ridden

● Sew Sheet Bodies

● Patran Sew: sew sheet bodies using Patran software

● Verify Boundary: similar to Geometry: Verify/Surface/Boundary

● Equivalence Edge Vertices

● Equivalence vertices during import

● Save Transmit File

● Save Parasolid xmt transmit file created during import

● Allow Duplicate CAD Model

● Allows a model with same name as a model in the database to

be imported

CATIA V4 Model


CATIA CAD MODEL IMPORT (Cont.)CATIA V4 Model

● CATIA V4 Model, CATIA Options… include● Import to Parasolid: No

● Imported geometry will not be Parasolid type geometry,

but SGM geometry (Patran native Solid Geometry Model)

● Entity Layers

● All layers, or selected layers, are imported

● Group Classification

● Displays dialog box for directing entities to Patran groups

● Create Groups from Layers

● Creates Patran groups from CAD layers automatically

● Group name: prefix_Ln


● Two buttons● Pro/ENGINEER CAD model import

● Direct Mesh for meshing Pro/ENGINEER solids

● Import to Parasolid -- create Parasolid or not

● Part -- individual part; need license

● Assembly -- set of parts; need license

● Primitive Geometry -- created from CAD import

into Patran; no license needed

PROENGINEER CAD MODEL IMPORT


PROENGINEER CAD MODEL IMPORT

DIRECT MESH

● Use Direct Mesh to mesh Pro/ENGINEER solid in

Pro/ENGINEER environment

● Pro/ENGINEER is executed

● Geometry is accessed in Pro/ENGINEER through its

API

● Meshing is done using Direct Mesh

● Resulting mesh is read into Patran database

● Must have Pro/ENGINEER installed, and have the

Nastran preference in Patran


UNIGRAPHICS CAD MODEL IMPORT

● Set Unigraphics as the Source

● Select desired UG part file

● Optional filtering (Unigraphics Options…) of

entities is available based on entity type (e.g.

Sheet Body), Patran groups from CAD layers,

if sewing is to be done, etc.


EXPRESS NEUTRAL FILE

● Express Neutral files are intermediate files that

are created during a specific CAD model

access

● Express Neutral files are portable when created

as text files

● Express Options provide capabilities such as

filtering entities, group creation, model preview


IGES FILE

● IGES format

● Import to Parasolid: create Parasolid or not

● Supports

● Point

● All curve types

● All surface types, except Patran Composite

● B-rep solid


PATRAN DATABASE ACCESS

● Patran database content can be transferred between

different databases.

● Import option allows the specification of entity type, ID

offset, name prefix, and conflict resolution tools.

● Equivalence Option allows common entities in the

databases to be equivalenced.

● Preview option provides access to summary

information.

● Through Groups, allows for importing just the entities

you need


● Patran databases can

be accessed by

selecting “MD.Patran

DB” as the source.

PATRAN DATABASE ACCESS (Cont.)


● Importing options

control:

● Which entities to

import

● Specification of

entity ID offset

● Specification of

unique names, e.g.

prefix for group

names

PATRAN DATABASE ACCESS (Cont.)


PATRAN NEUTRAL FILE ● Patran 2.5 neutral file

● Geometry

● Parametric cubic geometry only, e.g ParametricBiCubic

● Finite elements

● Nodes, elements

● Material and element properties

● Loads and boundary conditions

● Neutral File convention can be selected under Geometry

Representation in Preferences / Geometry

● MSC.Thermal still uses neutral file as input


STEP FILE

● ISO 10303 STEP (Standard for the

Exchange of Product Model Data)● Application Protocols (AP)

● AP 203: geometry and configuration controlled design

data

● AP 214: represents all types of geometry, including

pipe and harness data, and components

● AP 209: finite element model, including composites,

and results


FILE EXPORT OPTIONS


FILE TYPES EXPORTED

● Parasolid xmt file

● Specific types of parasolid geometry

● Curves

● Surfaces

● Solids

● Can specify the parasolid version


FILE TYPES EXPORTED (Cont.)

● CATIA V4

● Specific entity types

● Curves

● Surfaces

● Solids



● IGES

● Export through Parasolid: create a Parasolid

file or not


● Curves

● Surfaces

● Solids

● Nodes and elements

● Coordinate frames

● No results

● Select groups for export



● Patran 2.5 neutral file


● Nodes

● Elements

● Material properties

● Element properties

● No results

● Parametric cubic geometry only

● Select groups for export



● STEP

● Application Protocols (AP)

● AP 203

● AP 209

● AP 214

● AP 203, 214 entities

● Curves

● Surfaces

● Solids

● AP 209 entities

● Limited geometry

● Mesh

● Analysis

● Results


AUTOMATIC FEATURE RECOGNITION

● Though PATRAN is not a substitute for a CAD program,

it does have some robust features to allow you to build

and edit geometry

● One of these is the Automatic Feature Recognition Tool

● New release functionality in Patran 2008r1

● Previously in pre-release status

● Allows editing or removal of holes, chamfers and blends

(fillets) in Parasolid geometry

● Accessed from Tools/Feature Recognition

● FEM updated automatically after edits

Documents

INTEGRATION OF MSC PATRAN WITH CAD PACKAGES · UNIGRAPHICS CAD MODEL IMPORT Set Unigraphics as the Source Select desired UG part file Optional filtering (Unigraphics Options…) of