Explicit Dynamics Solutions for Engineering Simulation

For Short, High Deformation, Large Strain, Fracture or Complete Material Failure Applications

Homeland Security simulation performed with ANSYS AUTODYN

Explicit Dynamics simulations are addressed by two products in the ANSYS suite, and the right tool for the job depends highly on the application:

ANSYS AUTODYN: Defense, Homeland Security, Space (hypervelocity impact) and other fast transient Fluid-Structure Interaction applications
ANSYS LS-DYNA: Metal Forming, Drop Testing and other Consumer Product Testing applications

Characteristics of an explicit dynamics simulations in general are:

Extremely short time durations, typically less than a second in the total transient
High deformations, large strains, fracture or complete material failure

“Hurricane Proof” impact resistant window simulation in ANSYS LS-DYNA, suggesting that more design iterations are required

Product pages for each of the explicit dynamics simulation software suites are located here:

While the applications for explicit dynamics software is too numerous to present in a single page, the chart below highlights a few application areas and the software program or programs that can be use to model the event:

Class of Analysis	ANSYS AUTODYN	ANSYS LS-DYNA
Ballistic Protection	√
Explosion & Response Modeling, e.g.:: Mine blast on vehicles Combined blast & debris loading Urban center blast effects Well perforation charges	√
Stamping, Forging, Extrusion		√
Engine Blade Containment		√
Hypervelocity Impacts, e.g.: Space debris & meteoroid impact Planetary impacts	√
High Velocity Impacts	√	√
Hydraulic RAM	√	√
Safety Product Design	√	√
Explosive Forming or Welding	√

Explicit Dynamics Solutions for Engineering Simulation

For Short, High Deformation, Large Strain, Fracture or Complete Material Failure Applications

Class of Analysis

ANSYS AUTODYN

ANSYS LS-DYNA