1. SECTION 1
OVERVIEW OF MSC.MARC
AND MSC.PATRAN ~ PART 1

2. TABLE OF CONTENTS Section Page
Overview of MSC.Marc and MSC.Patran ~ Part 1
Company Overview ……………………………………………………………………………………………….. 1-3
Features and Benefits of MSC.Marc…….………………………………………………………………………. 1-7
Stretch Forming using MSC.Marc………………………………………………………………………………… 1-8
Superplastic Forming using MSC.Marc………………………………………………………………………….. 1-9
Analysis of a Rubber Boot Using MSC.Marc……………………………………………………………………. 1-10
Profile Rolling Using MSC.Marc…………………………………………………………………………………
Finger Biomedical Pump Simulation Using MSC.Marc………………………………………………………… 1-14
Ink Jet Printing Simulation Using MSC.Marc……………………………………………………………………. 1-15
What is MSC.Marc……….………………………………………………………………………………………… 1-16
MSC.Marc Documentation………………………………………………………………………………………… 1-17
Overview What is MSC.Marc……………………………………………………………………………………… 1-18
What is MSC.Patran……………………………………………………………………………………………..… 1-19
MSC.Patran useful features example:Problem with Trimmed Surfaces……………………………………… 1-20
MSC.Patran useful features example:Solution with Composite Surfaces…………………………………… 1-21
MSC.Patran useful features example:Solution with Tessellated Surfaces…………………………………
MSC.Patran useful features Tools Aiding Creation of Tessellated Surfaces………………………………
MSC.Patran useful features example:Surface Decompose…………………………………………………… 1-24
MSC.Patran Useful Features Verifying Mesh Topology………………………………………………………
MSC.Patran Useful Features Parameters Smoothing Meshes………………………………………………. 1-26
MSC.Patran Useful Features Parameters Smoothing Meshes………………………………………………. 1-27
MSC.Patran Useful Features Hard Curves Controlling Meshing……………………………………………… 1-28
MSC.Patran Useful Features Hard Points Controlling Meshing Fem Creation Tools………………………. 1-29
Summary Of MSC.Marc Structural Solution Procedures And MSC.Patran Marc Preference Support…… 1-30
Summary Of MSC.Marc Non-structural Solution Procedures And MSC.Patran Marc Preference Support. 1-31
Example Of Highly Nonlinear Problem: Deep Drawing Of A Sheet To A Box………………………………. 1-32
General Solution Features ………………………………………………………………………………………
Rigid-deformable And Deformable Deformable Contact………………………………………………………. 1-34
Elastic, Plastic, Hyperelastic, Creep And Viscoelastic Material Models……………………………………… 1-36
Large Element Library……………………………………………………………………………………………
Advanced Solution And Modeling Features……………………………………………………………………
Local Adaptive Remeshing………………………………………………………………………………………
Global Adaptive Remeshing……………………………………………………………………………………… 1-40
Where On MSC.Patran?…………………………………………………………………………………………

3. COMPANY OVERVIEW
The MSC.Software Corporation (formerly MacNeal-Schwendler Corporation) has been supplying sophisticated computer-aided engineering (CAE) tools since 1963
MSC.Software is the developer, distributor, and supporter of the most complete and widely-used structural analysis program in the world, MSC.Nastran as well as the first commercial nonlinear analysis program in the world, MSC.Marc.
MSC.Nastran
MSC.Marc
MSC.Dytran
MSC.Patran
MSC.Marc Mentat
MSC.MVision
MSC.Fatigue
MSC.Laminate Modeler
MSC.SuperForm
MSC.SuperForge
…and more

4. COMPANY OVERVIEW (CONT.)
MSC.Nastran
Linear Analysis
Vibration
Classic Dynamics
MSC.Marc
Spring back
Welding
Superplastic Forming
MSC.Dytran
Sheet Metal Forming
Plastic Container Forming
Crash Analysis
MSC.SuperForm
General Purpose Bulk Forming
MSC.SuperForge
3D Forging
Manufacturing Solver Carriers

5. COMPANY OVERVIEW (CONT.)
Years ...
MSC.Software Milestones
Company founded by Dr. Richard MacNeal and Mr. Robert Schwendler. Developed first program called SADSAM (for Structural Analysis by Digital Simulation of Analog Methods.) This was the forerunner of MSC’s flagship program, MSC.Nastran.
MSC participates in NASA-sponsored project to develop a unified approach to computerized structural analysis. The program became known as NASTRAN (NASA Structural Analysis Program)
A team of researchers at Brown University initiated the development of the technology leading to the MARC program.
February 1
1971 The MARC Analysis Research Corporation was founded.
MSC releases proprietary version of NASTRAN, called MSC.Nastran.
MARC Corp releases the first proprietary version of MARC, the first commercial Nonlinear finite element analysis program.
MSC merged with PDA Engineering (Developer of PATRAN) to become the largest single provider of finite element analysis (FEA) software to the CAE market.
MSC.Software merged with MARC Analysis Research to lead both the linear and the nonlinear analysis worldwide CAE market.

6. MSC CLIENT SUPPORT
With corporate headquarters in Santa Ana, California, MSC.Software maintains regional sales and support offices worldwide.
MSC Technical Support Hotline (USA/Canada). Staffed Monday through Friday, :00 a.m. to 3:00 p.m. Pacific Standard Time (10:00 a.m. to 6:00 p.m. Eastern Standard Time.)
support (USA/Canada) at MSC.Marc, MSC.Marc Mentat, MSC.Patran Marc Preference support
MSC.Patran –other than Marc Preference- support)
Support (USA/Canada) Fax
Internet support

7. FEATURES AND BENEFITS OF MSC.MARC
MSC.Marc has helped analyze and influence final design decisions on
Automotive parts
Nuclear reactor housings
Biomedical equipment
Offshore platform components
Coated fiberglass fabric roof structures
Rocket motor casings
Ship hulls
Elastomeric motor mounts
Space vehicles
Electronic components
Steam-piping systems
Engine pistons
Tires
Jet engine rotors
Welding, casting, and quenching processes
Large strain metal extrusions

8. STRETCH FORMING USING MSC.MARC
This series of images show a simulation of the stretch forming of skin panels for a major commercial aircraft. In stretch forming, the panels are stretched over a mandrel and then released, whereupon they spring back. As a result of these simulations, the panels can be formed properly the first time and their final shape matches the design without reworking.
For example, Boeing is using MSC.Marc for simulating the forming of aircraft panels including springback

9. SUPERPLASTIC FORMING USING MSC.MARC
This benchmark is a simulation of a manufacturing process that is taking a greater importance: Super Plastic Forming, or SPF; this is a process that permits extremely complicated shapes to be formed with a highly uniform thickness through the application of high temperature and controlled pressure to certain kinds of material. In this example the metal changes from its initial flat shape as catenaries are formed and then drapes over a protrusion to assume the final desired shape. The problem involves automated
3-D contact and large plastic deformation.
MSC.Marc 2001 added direct control loading so that strain rates are adhered to; this avoids writing a user subroutine.

10. ANALYSIS OF A RUBBER BOOT USING MSC.MARC
The constant velocity boot is modeled using either the Mooney or Ogden model for nonlinear incompressible materials. Viscoelastic behavior for both small and large problems may be included. These material models are simulated with MSC.Marc’s Hermann elements specially formulated for incompressible materials. Very large strains result because of self contact between bellows of the boot. As the shaft rotates, one side of the boot goes into compression, where local buckling may occur; the opposite side goes into tension, which may result in the eventual failure of the material because of fatigue. Damage models are available to model the degradation of elastomeric materials.
See detailed image in next page.

11. ANALYSIS OF A RUBBER BOOT USING MSC.MARC (CONT.)

12. PROFILE ROLLING USING MSC.MARC
This series of images shows a simulation of the profile rolling process. Here, a set of rollers deforms a flat sheet into a channel shape. This simulation shows half of the environment which, in the end, is used to form a U-shaped channel.
See detailed image in next page.

13. PROFILE ROLLING USING MSC.MARC (CONT.)
Metal Forming

14. FINGER BIOMEDICAL PUMP SIMULATION USING MSC.MARC
This 13-finger biomedical pump was easily modeled using MSC.Marc. The tube is a simple cylinder made of a polymer material, while the milking motion was simulated by defining the position versus time of each of the fingers. Because of the flexibility of MSC.Marc’s automated contact analysis capabilities, the user was able to optimize the pump’s performance simply by charging the position versus time tables.

15. INK JET PRINTING SIMULATION USING MSC.MARC
Virtual Manufacturing includes the simulation of processes involved in the operation and performance of a product. This example shows an analysis of the paper motion through an ink jet printer. The paper is pushed and pulled by rollers through the preheating stage on the right and then, under the print head at the top. The first analysis (first two images) the paper curls away from the pre-heater. Uniform heating of the paper is an important quality issue, since large gradients will cause distortion in the text. The second analysis (last two images) resolves the problem by adjusting the push/pull force of the rollers, resulting in uniform temperature for a variety of paper thicknesses at the designed operating speed.

16. WHAT IS MSC.MARC
MSC.Marc is a full featured, comprehensive software package for linear and nonlinear finite element structural and thermal analyses.
MSC.Marc includes a wide array of element types and material models
Large Displacements
Contact Resolution
Collapse
Non-Linear Material
(Hyperelastic rubber
in this example)

17. MSC.MARC DOCUMENTATION
Volume A: User Information and Theory
Volume B: Element Library
Volume C: Program Input
Volume D: User Subroutines
see ~marc2001/user (all Fortran templates)
Volume E: Demonstration Problems
see ~marc2001/demo (over 400 demos)
Volume F: Background Papers
see ~marc2001/primer
PDF files

18. OVERVIEW WHAT IS MSC.MARC?
MSC.Patran Marc MAR120 (this) course
Analysis Solution of Problem Types:
Structural
Thermal
Coupled Thermal-Structural
Fluid Mechanics
Electromagnetics
MSC.Marc Mentat MAR101 (other) course
Friendly Engineered GUIs:
MSC.Patran Marc Preference
MSC.Marc Mentat

19. WHAT IS MSC.PATRAN
MSC.Patran is a finite element pre- and post-processor, which has been integrated with several nonlinear analysis solvers including MSC.Marc, MSC.Nastran, and Abaqus/Standard for implicit solutions; and MSC.Dytran and LS-Dyna3D for explicit solutions.
Together, MSC.PATRAN and MSC.MARC are particularly useful for modeling complex non-linear problems.
MSC.AFEA combines MSC.Patran and MSC.Marc (The analysis may only be launched from within the graphics user interface.)

20. MSC.PATRAN USEFUL FEATURES EXAMPLE: PROBLEM WITH TRIMMED SURFACES
Pave mesh of trimmed surfaces. Note mesh paths do not follow edge
Trimmed Surfaces
Surface constraints lead to a poor mesh Vertices, hard points, hard curves, adjoining meshed edges

21. MSC.PATRAN USEFUL FEATURES EXAMPLE: SOLUTION WITH COMPOSITE SURFACES
Create a Composite Surface to eliminate restrictions
Vertices, Meshed Edges
Trimmed Surface Mesh
Composite Surface
Composite Surface Mesh

22. MSC.PATRAN USEFUL FEATURES EXAMPLE: SOLUTION WITH TESSELLATED SURFACES
Original Geometry
Tri Mesh
Tessellated Surface
Shell Mesh from Tessellated Surface

23. MSC.PATRAN USEFUL FEATURES TOOLS AIDING CREATION OF TESSELLATED SURFACES
Tessellated Surfaces use the node positions to build a surface.
Mesh quality is not of concern except where severe curvature must be captured.
FEM - Modify/Mesh/Sew tool sews gaps on a tri meshed region for the purpose of building a tessellated surface.

24. MSC.PATRAN USEFUL FEATURES EXAMPLE: SURFACE DECOMPOSE
Decompose trimmed surfaces to allow for better meshing control
Select vertices at edge or internal positions or existing points.
New mesh after Decompose
New Decomposed Surfaces
Trimmed Surface Mesh

25. MSC.PATRAN USEFUL FEATURES VERIFYING MESH TOPOLOGY
Topology defines adjacency relationships. Shared edges of a surface are termed topologically congruent if they occupy the same model space and use the same vertices.
Topological congruency determines whether coincident nodes are created on common boundaries.
Verify/Surface/Boundaries checks for free and manifold edges. If free edges exist internal to the model then these entities are topologically incongruent.
Geometry - Verify / Surface / Boundary
Incongruent Topology
Congruent Topology

26. MSC.PATRAN USEFUL FEATURES PARAMETERS SMOTHING MESHES
IsoMesh Parameters
Define mesh smoothing parameters and mesh patterns.
Tri Pattern for 90o cornered Surfaces
Paver Parameter
Allows for a tri element if element count on the boundary is odd numbered
Curvature check allows for refinement of elements on highly curved boundaries.
Control for internal element size. Default range is set to largest and smallest element on the boundary.

27. MSC.PATRAN USEFUL FEATURES HARD CURVES CONTROLLING MESHING
Existing Course grid model of a panel
Hard Geometry 3 1
Hard Points
Create points at the edge
to define nodal positions.
Hard Curves
Tessellated Surface from the Course Grid
Detail of Panel is a laminated panel
New Fine Grid FEM Model 4 2
Mesh follows Core Curves
Curves defining core region

28. MSC.PATRAN USEFUL FEATURES HARD POINTS CONTROLLING MESHING
Noncongruent mesh without
hard points at T-points
Congruent mesh with
hard points at T-points

29. FEM CREATION TOOLS
Example: Sweep Glide-Guide sweeps elements along glide curve and maintains orientation by the guide curve.
Can be Used to mesh ducting
Guide Bar elements along curve 61
Glide Bar elements along curve 62

30. Supported by MSC.Patran 2001
SUMMARY OF MSC.MARC STRUCTURAL SOLUTION PROCEDURES AND MSC.PATRAN MARC PREFERENCE SUPPORT
Linear and Nonlinear solutions
Static and Transient Analysis
Buckling and Post-Buckling
Time and Frequency based (Classical) Dynamics
Frequency (and Modal) Extraction
Euler Buckling
Direct (Transient)
Modal (Transient)
Frequency Response (Steady State)
Spectrum Response (Steady State)
Supported by MSC.Patran 2001

31. SUMMARY OF MSC. MARC NON-STRUCTURAL SOLUTION PROCEDURES AND MSC
SUMMARY OF MSC.MARC NON-STRUCTURAL SOLUTION PROCEDURES AND MSC.PATRAN MARC PREFERENCE SUPPORT
Heat Transfer
Steady State Analysis
Transient Analysis
Supported by MSC.Patran 2001
Fully Coupled Thermal/Structural Analysis
Steady State
Transient
Creep
Hydrodynamic Bearing
Electrostatic Analysis
Magnetostatic Analysis
Electromagnetic Analysis
Acoustic Analysis
Fluid Mechanics
Fluid behavior only
Fluid-thermal coupled behavior
Fluid-solid coupled behavior
Fluid-thermal-solid coupled behavior
Fluid-Soil (pore pressure)
Not Supported by MSC.Patran 2001

32. EXAMPLE OF HIGHLY NONLINEAR PROBLEM: DEEP DRAWING OF A SHEET TO A BOX
MSC.Marc provides a large collection of examples. These are documented in Volume E. This example is given in section 8.38 and data files are from case e8x38a to case e8x38d which use four different techniques.
This example demonstrates the deep drawing of a box modeled with shell elements.
The punch and holder are modeled in MSC.Marc with Nurbs using the CONTACT option. It can be set up in the MSC.Patran Marc Preference in the Loads/BCs form.
Holder
Punch
Workpiece

33. GENERAL SOLUTION FEATURES
Newton-Raphson and Arc-Length Methods
Manual or Automated Load Incrementation Procedures

34. RIGID-DEFORMABLE AND DEFORMABLE DEFORMABLE CONTACT
Analytic or Discrete Rigid Contact Surfaces with Velocity, Force/Moment, or Displacement Control
Glued, Stick-Slip or Continuous Friction Models
Click in a cell to toggle T, G, or nil

35. RIGID-DEFORMABLE AND DEFORMABLE DEFORMABLE CONTACT (CONT.)
When two bodies come into contact, MSC.Marc finds out which is the area of contact and calculates the contact stresses (Normal Stress or contact “pressure” and Shear Stress or contact “friction stress”)
The user may also request the calculation of Normal and Friction (nodal) Forces.

36. ELASTIC, PLASTIC, HYPERELASTIC, CREEP AND VISCOELASTIC MATERIAL MODELS
Ample Library of Built in Material Models
Includes Composite, Damping and Failure Materials

37. Example: First modal shape of beam model combining element types
LARGE ELEMENT LIBRARY
0D (Point) Elements 1D (Bar) Elements 2D Solid (Continuum) Elements 2D Shell Elements 3D Solid (Continuum) Elements D, 1-D, 2-D and 3-D Elements may be Combined User Control on Integration Methods
Example: First modal shape of beam model combining element types

38. ADVANCED SOLUTION AND MODELING FEATURES
Automatic Global and Local Adaptive Remeshing
User Subroutines
Restart capabilities
Parallel Processing using Manual Domain Decomposition
Supported by MSC.Patran 2001
Fracture Mechanics
Design Sensitivity and Optimization
Parallel Processing using Automatic Domain Decomposition
Not Supported by MSC.Patran 2001

39. LOCAL ADAPTIVE REMESHING
Automatic MPC

40. GLOBAL ADAPTIVE REMESHING
Available for 2D only

41. WHERE ON MSC.PATRAN?
In many cases all model definition, analysis submittal and results evaluation can be done thru MSC.PATRAN and driven via the graphical user interface.
MSC.PATRAN on-line help facility includes documentation for all GUI forms and topics.