ANSYS Explicit STR

ANSYS Explicit STR is well suited for solving:

• Drop tests (electronics and consumer goods)
• Low- to high-speed solid-to-solid impacts (applications from sporting goods to aerospace)
• Highly nonlinear plastic buckling events (manufacturing processes)
• Complete material failure applications (defense and homeland security)
• Breakable contact, such as adhesives or spot welds (electronics and automotive)

ANSYS Explicit STR analysis of the response of a concrete structure to dropped loads

The ANSYS Explicit STR product is built upon the solver and element technology that has been used commercially for more than 20 years as the core of the ANSYS AUTODYN product suite. Throughout that time, continual testing and refinement of both technologies have produced robust solution capabilities that you can rely on to solve your complex explicit dynamics problems.

The Lagrangian based element and solver technologies contained in ANSYS Explicit STR are the same as those found in ANSYS AUTODYN, which makes taking a model from ANSYS Explicit STR over to ANSYS AUTODYN relatively simple. In ANSYS AUTODYN, additional solver technologies include Eularian, ALE (Arbitrary Lagrangian Eularian) and SPH (Smooth Particle Hydrodynamics), technologies that enable the ability to solve complex fluid structural explicit dynamics problems, brittle fracture and a host of other high speed multiphysical problems.

Models setup in the other analysis system, such as static structural, can be persistently linked to an explicit dynamics system to transfer material data, mesh, connections, loads and constraints.

The real benefit of ANSYS Explicit STR software is the work flow afforded by operating in the ANSYS Workbench environment. While many different simulation processes are possible, here is an example of the typical steps a user might take:

• Associatively link to a parametric CAD model or import a geometry
• Create a smooth explicit mesh using the new explicit preference option and/or patch-independent mesh method within the ANSYS meshing platform; automatically create part-to-part contact by using the new body interactions tool
• Fine tune contact specifications, if desired, by utilizing breakable or eroding contact options
• Load and/or support an assembly and/or parts as usual
• Solve interactively either in the background or via remote solution manager (RSM)
• View progress of solution in real time using concurrent post-processing capability
• Explore alternative design ideas via parametric changes to the CAD model and easily perform re-solves, just like other ANSYS Workbench environment based applications
• Use the ANSYS design exploration capability to automate the parametric model space exploration

Native, bi-directional CAD connectivity and automatic meshing with advanced options are provided through the ANSYS Workbench platform . The ANSYS Workbench platform provides bi-directional CAD connectivity with major CAD systems, and allows import from most neutral geometry formats.

The ANSYS Workbench platform also provides a wide range of highly robust and automated physics based meshing tools including tetrahedral meshes, pure hexahedral meshes, mixed hex/tet/pyramid meshes, inflation layers and high quality surface meshes. Users also have the ability to control many advanced meshing options such as body, surface or edge sizing controls, sphere of influence, inflation layer meshing, mesh defeaturing tolerances and much more.