LS-DYNA: Why am I observing different end results or behaviors of the same model (input deck) on Linux vs Windows?
Tagged: Explicit - LS-DYNA, export, lsdyna, mechanical, structural-mechanics
-
-
March 17, 2023 at 8:59 amFAQParticipant
In general, differences could be due to either a model problem, or a bug. For a model problem, the code is the same for both platforms, but differences in platform (chip/OS/compiler) can cause LS-DYNA results from a given model to vary to some degree due to a differing numerical ‘path’ that the solution follows. Similar differences could be observed with differing precisions or between differing versions of Dyna, for example. For a robust model, there should not be a large variation, but a marginally stable or poorly constructed model would be more susceptible to inconsistent behavior. For bugs, sometimes an issue can occur in Windows, but not in Linux or vice versa. This may be because the compilers differ slightly and memory layout differs between platforms, so some issue could be exposed on one platform may not be seen on the other.
-
Introducing Ansys Electronics Desktop on Ansys Cloud
The Watch & Learn video article provides an overview of cloud computing from Electronics Desktop and details the product licenses and subscriptions to ANSYS Cloud Service that are...
How to Create a Reflector for a Center High-Mounted Stop Lamp (CHMSL)
This video article demonstrates how to create a reflector for a center high-mounted stop lamp. Optical Part design in Ansys SPEOS enables the design and validation of multiple...
Introducing the GEKO Turbulence Model in Ansys Fluent
The GEKO (GEneralized K-Omega) turbulence model offers a flexible, robust, general-purpose approach to RANS turbulence modeling. Introducing 2 videos: Part 1Â provides background information on the model and a...
Postprocessing on Ansys EnSight
This video demonstrates exporting data from Fluent in EnSight Case Gold format, and it reviews the basic postprocessing capabilities of EnSight.
- How to deal with “”Problem terminated — energy error too large””?”
- How do I request ANSYS Mechanical to use more number of cores for solution?
- Contact Definitions in ANSYS Workbench Mechanical
- The LS-DYNA equivalent of *MODEL_CHANGE card (in ABAQUS). Which keywords can be used to introduce(activate)/delete(deactivate) elements in the middle of a calculation (at user-specific time/load steps).
- How to restore the corrupted project in ANSYS Workbench?
- There is a unit systems mismatch between the environments involved in the solution.
- How to resolve “Error: Invalid Geometry”?
- After Workbench crashes, how can I recover the project from a .mechdb file?
- Please explain the difference between Point Mass and Distributed Mass.
- Model has a large number of contacts – how to reduce them?
© 2024 Copyright ANSYS, Inc. All rights reserved.