ANSYS AUTODYN

Simulate short duration, severe loadings

ANSYS Autodyn simulates the response of materials to short duration severe loadings from impact, high pressure or explosions. It is best suited for simulating large material deformation or failure. Autodyn provides advanced solution methods without compromising ease of use. Complex physical phenomena such as the interaction of liquids, solids and gases; the phase transitions of materials; and the propagation of shock waves can all be modeled within Autodyn. Integrated within ANSYS Workbench with its own native user interface, this program has for decades led the industry in ease of use, enabling you to produce accurate results with the least amount of time and effort.

Autodyn's range of technologies means that you can model solids with Lagrangian elements, and liquids with Eulerian and SPH (smooth particle hydrodynamics), so you can capture every type of event with the most appropriate technology. Multiple solvers can be used in one model, and the interactions between the various domains can be modeled for efficient, accurate results.

ANSYS Autodyn Capabilities

Solver Technology
ANSYS Autodyn lets you select from different solver technologies so the most effective solver can be used for a given part of the model. The Lagrangian FE solvers enable fast and efficient solutions when looking at structural components subjected to shock loading and large deformations. Two Euler solver formulations give you the ability to model fluid flow, as well as an alternative way to simulate extreme plastic flow of solid materials. The Euler solvers are available in two formulations: (1) Multimaterial Euler in which individual elements can contain multiple materials which can be hydrodynamic or can have strength properties assigned to them, and (2) a single material blast solver for simulating blast and shock wave propagation over large distances.

There is also a smooth particle hydrodynamic (SPH) solver for looking at hypervelocity impacts and failure of brittle materials.

Solver Technology

Solver Coupling
Autodyn's interaction logic enables automatic communication between the various solvers coexisting within the same model. Lagrange-Lagrange, SPH-Lagrange and Euler-Lagrange interactions can all be created within the model in a simple and intuitive manner. This allows fluid structure interactions to be simulated with ease. When this is combined with Autodyn’s extensive remapping and dezoning capabilities between the different solvers, automatic erosion and a wide range of post-processing options, it makes Autodyn the industry-leading code for simulating blast, blast structure interaction, multiscale and multidimension blast analyses. So, whether you want to simulate close-in detonation of energetic materials, far field blast, weapon effects, ballistic impact or hypervelocity impact, Autodyn is the code of choice.

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Material Data
The response of materials to dynamic high strain rate loading can be complex, and the necessary material data is hard to come by. To help you with this, Autodyn’s material library contains over 150 prepopulated material models covering most common engineering alloys, brittle and granular materials, orthotropic materials and energetic compounds. These models are referenced back to well-regarded published sources and contain equation of state, strength and failure models so you can simulate material responses from the simple linear elastic to highly complex nonlinear response up to and beyond the point of failure.

This combination of models gives you the ability to simulate various material phenomena such as nonlinear pressure response, strain hardening, strain rate hardening, thermal softening, compaction of porous materials, orthotropic behavior, crushing damage, chemical energy deposition, tensile failure and phase changes.

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