Best of Class Solver Technologies
Limited-duration events (such as severe collisions and blade containment) and large, permanent deformations (within the stamping and forming industries) present engineers with unique simulation challenges. ANSYS LS-DYNA meets these challenges by fusing LSTC’s LS-DYNA explicit dynamic solver technology with the pre-/post-processing power of ANSYS software. This powerful pairing helps engineers understand the elaborate combinations of nonlinear phenomena found in crash tests, metal forging, stamping and catastrophic failures.
A new paradigm for managing simulations is used with the ANSYS Workbench GUI at ANSYS 12.0. The ANSYS Workbench GUI now consists primarily of a toolbox region, project schematic, tool bar and menu bar. 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. ANSYS LS-DYNA users at ANSYS 12.0 will be able to use the Workbench base mechanical application to read in a CAD model, load, mesh and export a “file.k” for editing and solving with ANSYS LS-DYNA solver. Postprocessing can be done with the ANSYS Mechanical APDL application which has extensive time/history capabilities.
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.
Geometry Defeaturing and Editing
ANSYS DesignModeler provides geometry modeling functions unique for simulation. Features include CAD geometry defeaturing, fluid or electromagnetic enclosure creation, detailed geometric modeling and concept model creation tools.
Product drop tests present users with unique parameters for simulation and analysis. The ANSYS Drop Test Module
(included with ANSYS LS-DYNA and ANSYS LS-DYNA PC) adds a complement of loads and conditions tailored specifically for such analyses.
Three frames from a Personal Desktop Assistant (PDA) drop test performed in ANSYS LS-DYNA with the ANSYS Drop Test Module added. The initial impact (top) was calculated as being dropped from a height of 1,829 mm (approximately six feet). The secondary impact (middle) exhibits separation of the PDS’s batteries from the main housing. The bottom image displays the rebound of the secondary impact exhibited by the device in the simulation.
Drop Test Module Specifications
- Consumer electronics
- Household appliances
- Children’s toys
- Lawn and garden equipment
- Power tools
- Sporting goods
- Shipping containers and contents
Loads and Conditions
- Automatic target surface generation
- Angle of incline
- Initial velocities
- Frictional effects
- Drop heights
- Animation output
- Windows AVI format output
- Time history graphs
- Displacement vs. time
- Single dialogue box
- Drop test-specific documentation