Nastran

MSC Nastran

MSC Nastran은 작은 문제부터 복잡한 어셈블리까지 적용가능한 가장 강력한 범용 유한요소해석 솔루션입니다. 지난 40여년동안 구조해석 분야에서 증명된 표준 도구인 Nastran은 폭넓은 모델링 및 linear statics, displacement, strain, stress, vibration, heat transfer 등의 해석 기능을 제공합니다. 또한 Nastran은 플라스틱, 금속의 재료에서 부터 복합재료 및 초탄성재료까지 취급할 수 있습니다.

Add new modules as you grow
Since MSC Nastran is actually a family of tightly integrated analysis modules, you can purchase exactly what you need. You can start with a basic configuration that allows you to perform linear and buckling analysis. Later, you can add additional MSC Nastran modules for aeroelasticity, design optimization or nonlinear analysis based on your needs.

Work within a completely integrated environment
MSC Nastran is closely linked with the pre-processor and post-processor Patran. A wide range of third-party CAD programs and CAE modelers also offer direct interfaces to MSC Nastran, giving you a completely integrated modeling and simulation environment to work within.

MSC Nastran Benefits

•	Simulate how a design behaves under real-world conditions without having to build costly physical prototypes.
•	Obtain accurate results on design behavior
•	Start off with MSC Nastran Basic and then add additional MSC Nastran modules (nonlinear, optimization, and so on) as your analysis needs grow.
•	Increase your confidence in your final product design by virtually testing a design under all conceivable loading conditions.
•	Minimize time spent on manual data transfers by using Nastran, a product well-integrated with MSC Software's other simulation tools, as well as many third-party solid modeling programs.

MSC Nastran Applications

You can use MSC Nastran to determine the following:

Strength, durability and vibration assessment of various structures such as aircrafts, car, trucks, or a train
Structural dynamic response simulation of loads that vary with time or frequency
Modal based analyses and NVH solutions of large systems such as in automotive and aerospace vehicle systems
Simulation of interior acoustics for sound pressure inside a bounded domain
Static and transient analysis of structures involving material and geometric nonlinear behavior and nonlinear boundary condition
Advanced heat transfer analysis with contact including conduction, convection and radiation to understand the effect of temperature fluctuations in consumer electronic devices such as television or cell phone.
Automated thermal followed by structural analysis
Analysis of structures with rotating components
Include the effects of aeroelasticity on structures
Combined topology, sizing and shape optimization of structures with manufacturing constraints

MSC Nastran Modules

MSC Nastran Basic Package includes:

Linear Statics
Normal Modes
Buckling
Connectors
Dynamics
Heat Transfer
Adams integration
Unlimited Model Size
Direct Matrix Abstraction Programming (DMAP)

MSC Nastran Advanced Package adds:

Aeroelasticity I
Dynamic Design Analysis Method (DDAM)
Shared Memory Parallel (SMP)

MSC Nastran Basic Package is a prerequisite.

MSC Nastran Nonlinear Complete adds:

Nonlinear
Marc Translator
Implicit Nonlinear
Implicit Nonlinear Shape Memory metals
Implicit Nonlinear Hemi Cube View Factors

MSC Nastran Basic Package is a prerequisite.

Complementary MSC Nastran Modules:

Distributed Memory Parallel (DMP)
Automated Component Modalule Synthesis (ACMS)
Acoustics (Interior)
Aeroelasticity II
Design Optimization
Krylov Solver
Rotor Dynamics
Superelements
Topology Optimization
Implicit Nonlinear Multi-Processor

What's New: Nastran 2008r1

Implicit Nonlinear – SOL600

Support for very large grid and element IDs (10-digit IDs may be used for grid and elements)
Support for multiple RFORCE entries in the same subcase so that different portions of the structure can rotate with different angular velocities or different directions
Turn off contact checking in selective subcases
New elements include triangular plane stress, solid-shell element and pentahedral 15-node solid element
Generalized Alpha method that is superior for difficult dynamics problems involving contact
Enhanced composite integration methods to reduce computation times
Support for fully nonlinear composites with properties of each layer supporting plasticity and temperature dependency

Optimization

DRESP3 enhancements include – provision for a capability to provide analytic gradients for the response, ability to produce multiple response outputs from a single DRESP3 call and option to reorder finite difference sensitivities
Topometry optimization that can be applied to all elements that can be resized through Bulk Data entries DVPREL1 and DVMREL1
Topography optimization (bead or stamp optimization) for reinforcement bead patterns
Automatic self-randomization of input file to enable stochastic analysis
Random elimination of a specified percentage of CWELD elements contained in a bulk data file for design integrity assessment
Support for properties on PCOMPG as design variables
Utilize fluid modes as design constraints

Numerical Methods and High Performance Computing

Improved computational efficiency and performance for both linear and nonlinear contact analysis, especially for solid elements using CASI element based iterative solver
CASI solver available for use in non-linear transient structural analysis
Matrix-based iterative solver available for nonlinear static and transient structural analysis
Factor matrix caching for Lanczos and nonlinear transient analysis for improved performance
TAUCS indefinite solver to improve Lanczos performance
Shared memory parallel (SMP) scalability improvements for static analysis

Aeroelasticity and Rotor Dynamics

Improved interpolation method that interpolates each term in the generalized aerodynamic matrix individually
Storage of spline matrix in sparse format in order to save memory