NEiNastran
NEiNastran is a powerful, general purpose finite element analysis tool with an integrated graphical user interface and model Editor which is used to analyse linear and non-linear stress, dynamics, and heat transfer characteristics of structures and mechanical components. It represents the latest in FEA technology with one of the fastest iterative solvers on the market along with accurate solutions that have been trusted for over 15 years by companies in all industries. It is available on a wide variety of platforms including 32-bit and 64-bit Windows, Linux, and Unix operating systems.
NEiNastran Product Suite Key Features
- Comprehensive interactive tools necessary for model creation, analysis monitoring, and results evaluation including a state of-the-art analysis Editor.
- Uses the world's leading Windows-based pre- and post-processor for advanced engineering finite element analysis (Femap), which is easy to use and has the power to model very difficult analyses.
- Specialized industry-proven element technologies, including hybrid quad and hex elements, advanced tension-only shell and cable elements, surface and spot weld elements, dissimilar mesh interpolation elements, and heat transfer elements.
- High performance processing including advanced parallel PCGLSS iterative, sparse direct, and block Lanczos solvers which allow solutions to large-scale models over 10 million degrees of freedom on inexpensive 32-bit Windows workstations with support for even larger model sizes on high end 64-bit Linux workstations.
- Advanced solution sequences such as linear and non-linear static, transient dynamic, steady state dynamic, frequency extraction, heat transfer, and other analysis types provide a choice of appropriate analysis types for different types of simulations.
- Robust contact capability using a 3D surface contact method which easily handles dissimilar meshes between components including frictional effects.
- Extensive composite material support including 2D orthotropic, 3D orthotropic, general anisotropic, laminate lay-up definitions, and a wide range of failure criteria.
- Load and boundary condition interpolation allows mapping of thermal and CFD output from specialized heat transfer and fluid dynamic models to the structural model for load and boundary condition definition.
- Advanced modelling capability features robust CAD import, advanced beam modelling, mid-surface extraction, hexahedral and tetrahedral meshing, and a broad range of loads, materials, analyses types, and visualization options.
- Used to model virtually anything including aircraft, satellites, marine vessels, heavy construction equipment, and medical devices by engineering organizations and consultants world-wide.
- Proven track record demonstrating that NEiNastran is one of the most trusted products for structural analysis in all industries.
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Compatibility with NASTRAN input file format, and FEMAP and PATRAN results neutral file formats insure model and results portability. Extensive diagnostics, user options, status information, and statistical output make NEiNastran safe, powerful, and easy to use.
Applications
- Product design and analysis
- Manufacturing methods
- Process design
- Instrumentation
- Testing
Solution Capabilities
NEiNastran provides analysis capability for the following solution types:
Linear Static Analysis
- Linear stress, strain, deflection
- Inertial relief
- Thermal stress and deflection
- Pre-stress
- Mass properties
Dynamic Response
- Direct transient response
- Direct frequency response
- Modal transient response
- Modal frequency response
- Random vibration
- Modal response/shock spectrum generation
- Modal summation (ABS, SRSS, NRL, CQC, DDAM)
- Linear and non-linear direct transient response
- Linear and non-linear pre-stress support for all modal solutions.
Normal Modes
- * Natural frequencies and mode shapes * Flexible and rigid body motion * Modal participation factors, effective mass/weight, and reaction forces * Linear and non-linear pre-stress (stiffening)
Transient Heat Transfer
- Linear and non-linear
- Conduction, convection, and radiation
Steady State Heat Transfer
- Linear and non-linear
- Conduction, convection, and radiation
Buckling Analysis
- Critical loads and mode shapes
- Linear and non-linear initial stress
Nonlinear Static Analysis
- Large displacement and rotation
- Material non-linear (non-linear elastic, elastic-plastic,--perfectly plastic thermo-elastic,-visco-elastic, creep)
- Tension only (cables and shell elements)
- Contact (gap, slide line, and surface to-surface , all with friction)
General (supported in all solutions)
- Composite laminate materials
- Temperature dependent materials
- Direct matrix import and export (DMIG)
- Craig-Bamption and Guyan reduction
- Superelement support
- Displacement, load, and temperature interpolation
NEiNastran solvers
NEiNastran uses the latest in solver technology providing fast results for the largest and most complex FEA models. Four linear solvers (PCGLSS, PSS, VSS, and VIS) and two eigensolvers (LANCZOS and SUBSPACE) are included.
- PCGLSS (Preconditioned Conjugate Gradient Linear System Solver) is an advanced iterative solver licensed from CA&SI and used in many other leading FEA products.
- PSS Solver (x64 Windows) - Extremely fast parallel direct solver capable of handling models over 15 million degrees of freedom
- VSS (Vector Sparse Solver) and
- VIS (Vector Iterative Solver) is based on NASA developed technology and has been enhanced to provide better performance and accuracy.
- Lanczos Eigensolver - Block Lanczos multi-mode eigensolver using either an iterative or direct solution technique capable of handling models over 4 million degrees of freedom on a Pentium PC
- Subspace Eigensolver - Subspace eigensolver based on VSS
Accurate and proven answers with NEiNastran
- Over 15 years of use by industry
- Comprehensive verification program and documentation set
- Over 3000 test problems verified for each release
- Extensive built-in diagnostics verify accuracy of each analysis
For more details about NEiNastran products, please download NEiNastran Features (.pdf)
