Autodesk Nastran


Trusted and accurate mechanical simulation solver

Autodesk Nastran FEA solver software analyzes linear and nonlinear stress, dynamics, and heat transfer characteristics of structures and mechanical components—see real-time results and changes in solution parameters while solving. This technology helps engineers and analysts to gain accurate results to complex simulations and is a part of Autodesk’s Digital Prototyping solutions.

Dynamic response

Normal modes
Determine the undamped natural mode shapes and frequencies of structures. Designers can explore and resolve problems with noise and vibration.

Random vibration fatigue
Up to 70-80% of all mechanical failures are caused by fatigue in service due to a cyclic load with a magnitude lower than their design load. Use fatigue capability to investigate the durability of a part under repeated loading.

Prestress normal modes
Loading on a structure can affect the natural frequency of the system similar to the way that tightening a guitar string increases its natural frequency. A pre-stress normal modes analysis allows a user to simulate the preloaded structure.

Efficient analysis control

Simulation Mechanical, Autodesk Nastran In-CAD integration
Autodesk Nastran is the finite element analysis (FEA) platform for Autodesk Nastran In-CAD software and Simulation Mechanical software. Use advanced mechanical simulation solving capabilities for Autodesk mechanical simulation products.

Autodesk Nastran editor
The Autodesk Nastran editor gives engineers greater control over their FEA models and results. Features such as advanced editing, context-sensitive input, and dynamic greatly increase productivity and results reliability from the start.

Flexible usage
Autodesk Nastran works with multiple pre- and post-processors, allows for multicore deployment, and offers regional and global usage rights* for ease of deployment.
* Availability depends on region or country.

FEA solutions

Linear static
Determine stress, strain, and deformation resulting from applied static loads and imposed constraints.

Steady state heat transfer
Measure both linear and nonlinear capabilities. Autodesk Nastran software supports both 2D and 3D models using solid, shell, and line element types. The heat transfer model can also be used for structural analysis.

Assembly modeling with contact
Model real-world assembly simulation for different kinds of contact interactions, including sliding, friction, and welded contact types.

Autodesk Nastran solver provides easy, straightforward handling of complex ply data.

Transient response
Determine the response of a structure through a period of time under the influence of constant or time-dependent loads.

Frequency response
Determine the structural harmonic response based upon frequency-dependent loads. Recover displacement, velocity, acceleration, stress, and strain.

Random response
Analyze the structural behavior in response to imposed random dynamic loads. Examples of conditions that can be simulated include road vibration, wave cycles, engine vibration, and wind loads.

Transient heat transfer
Determine the temperature distribution and heat flow within an object that has time-dependent thermal conditions. This feature includes everything in the steady-state heat transfer capabilities, but also allows for time-dependent loadings and boundary conditions.

Static fatigue
Determine the durability of structures under repeated loading, including low- and high-cycle fatigue. Loading can be simple or multiaxial.

Prestress static
Analyze structures subjected to initial stress and model the effect of the initial stress state on a structure's displacements and stresses.

Nonlinear analysis

Linear and nonlinear buckling
Run linear or Euler buckling analyses on loaded models to determine the critical buckling load. Nonlinear buckling analysis is also available for loadings and models that do not conform the requirements of linear buckling. These include eccentricities, nonlinear material behavior, and large deformations that affect the buckling loads.

Nonlinear static and transient response
Analyze structures that exhibit nonlinear behavior. Nonlinear effects can be the result of nonlinear material properties, large deformations, and contact-based changes in the boundary conditions.

Surface contact (nonlinear)
Nonlinear surface contact capability applies to surfaces defined by both solid and shell elements. Surface contact is ideal for large thin shell fabrications such as ship, aircraft, and automotive structures. Simulate part-to-part interactions of interlocking components, including press-fits, using surface contact.

Automated impact analysis, drop test
View realistic and meaningful projectile impacts and virtual drop test simulations. Automated impact analysis (AIA) introduces the power that automated tools can bring to demanding simulation problems.

Advanced material models
Analyze conventional engineering materials and simulate the latest advanced materials, including composites, shape memory, hyperelastic, viscoelastic, and brittle materials. Material models include temperature-dependent materials, nonlinear elasticity and plasticity effects, creep, and thermo-elasticity.