Find out how the new Autodesk Nastran In-CAD can help you solve your design challenges

Autodesk Nastran In-CAD software, a general-purpose finite element analysis (FEA) tool for engineers and analysts, offers a range of simulation powered by the Autodesk Nastran solver.

FEA software with CAD integration Autodesk Nastran In-CAD finite element analysis (FEA) software uses the Autodesk Nastran solver and integrates with compatible software to simulate real-world behavior. Simulate a wide range of analysis types before you begin manufacturing. When you buy a perpetual license with Maintenance Subscription, you get the latest releases, flexible licensing, web support, and e-learning.

Features for Autodesk Nastran In-CAD

Advanced Analysis:


Frequency response

Determine the structural harmonic response based on frequency-dependent loads. Recover displacement, velocity, acceleration, stress, and strain. Identify how a structure responds to a given load across a range of excitation frequencies.




Impact analysis

Autodesk Nastran In-CAD uses the Autodesk Nastran solver for more accurate and faster nonlinear transient analysis. This type of analysis can include all types of nonlinearities at the same time—large deformations, sliding contact, and nonlinear materials.




Normal modes

Assess potential problems, such as vibration-related operator fatigue or structural fatigue, due to structural loading in generators, rotating equipment, or anything mounted on a vibrating platform. View the normal modes (or natural frequencies) of a structure that might be subject to dynamic loading. Both shape and frequency, normal modes can help guide design engineers to reduce the impact of shaking or vibration by redesign or reorientation of loads.



Prestress normal modes

A standard modal analysis cannot account for applied loads. Autodesk Nastran In-CAD software provides specific tools for capturing true stiffness when complex loading is present. Like the strings in a guitar or piano, increased tension levels can impact the operational stiffness and dramatically increase the natural frequency of a structure. Tools include spinning shafting and pressure vessels.



Random vibration fatigue

Gain insight on long-term structural robustness for products whose operation must be characterized by power spectral density (PSD) inputs, such as aircraft and spacecraft structures and industrial equipment. Structures subjected to road load or fluid flow-induced vibration experience dynamic energy that can’t be quantified simply by frequency and amplitude. Loading over a representative period can indicate some consistency and predictability.



Nonlinear static and transient response

Capture all forms of nonlinearity in transient or time-varying events to help engineers explore dynamic responses to dynamic loads, or impulses that result in resonant vibration or stress amplification. Show material nonlinearity (material stress-strain data), contact (opening and closing of gaps and sliding), and large displacement and rotation (large deflection) effects in analysis models for interlocking equipment and gears and blast analysis. You can also include transient and inertia effects.



Advanced material models

Capture complex nonlinear phenomena, such as plasticity (post-yield permanent set), hyperelasticity (elastomers), and shape-memory effects. Model a wide range of materials, from metals to rubbers and soft tissue, in a single virtual test. Prediction with simple material models can lead to erroneous design decisions. Nonlinear options in the material library include resilient mounds, composite materials, fracture and failure analysis, and more.

More Features without Videos:

Automated drop test

FEA-8 Simplify and automate a very complex, time-consuming simulation task. Ideal for performing projectile impacts and virtual drop tests, automated drop test demonstrates the power that automated tools can bring to demanding simulation problems.

Surface contactFEA-9

Autodesk Nastran In-CAD software includes contact modeling options to help engineers explore more natural interactions between parts, and to help alleviate guesswork on a simplified load or restraint. The Autodesk Nastran In-CAD solver makes easier work of inherently nonlinear computations. Model press-fits, gears, mechanical comonents, and assemblies with different kinds of contact, including sliding, friction, and welding, to produce simulations with real-world fidelity.


Take advantage of easy, straightforward handling of complex ply data. Get reliable and insightful results from analysis based on failure indices, like Puck and LaRC02. Progressive ply failure analysis helps to determine how a composite structure responds beyond first ply failure. 3D solid composite element analysis accurately captures transverse shear in composite structures.

FEA-11Transient response

Determine the response of a structure through a period of time under the influence of constant or time-dependent loads. Static analysis shows how a structure will respond to loading. In the event of impulse loading or other time-dependent loads, structures may behave differently than their end state. Transient response helps you to investigate the behavior of a part on its way to this end result.

FEA-12Random response

Analyze the structural behavior in response to the imposition of random dynamic loads. Simulated conditions include road vibration, wave cycles, engine vibration, and wind loads.

Find out how the new Autodesk Nastran In-CAD can help you solve your design challenges inside Autodesk Inventor by Viewing these Videos on examples of Autodesk Nastran In-CAD solutions.

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