The LSTC SID-IIs D FAST model as well as its physical counterpart represent a 5th percentile adult female in a side impact scenario.

The SID-IIs D FAST is a coarsely meshed, very fast-running model of the SID-IIs D. The mesh of the fast SID-IIs D version is based on LSTC’s detailed model of the SID-IIs D The model records all important data channels. Details about the model can be found in the documentation that is included in the downloadable package.

All current models can be obtained through our webpage in the LSTC Models download section or through your LS-DYNA distributor.

To submit questions, suggestions, or feedback about LSTC's models, please send an e-mail to: Also, please contact us if you would like to help improve these models by sharing test data.