J-SimRapid Functions

J-SimRapid is a modelling tool for creating a reduction model with beam element that supports large deformation and crash.

Dedicated viewers and GUI allow you to create beam models in interactive from Ansys LS-DYNA shell models.

Feature Highlights

Creating a Reduction Model for Large deformation and crash

Reduction Model Creation Function with beam element

J-SimRapid creates a reduction model using an arbitrarily shaped cross section Hughes-Liu beam element from a Ansys LS-DYNA shell model. Beam modelling created on a part-by-part basis is joined via a "Connected beam method (patent-pending)" developed by JSOL via a spotweld. In addition, material model set for shell element in the existing model is converted to the "beam material model (patent-pending)" considering buckling deformation.

Creating a Hughes-Liu beam element for an Arbitrary Cross Section

Model Ansys LS-DYNA with Hughes-Liu beam element that has been implementation as the defaults beam element. In addition, this method uses the Arbitrary Cross-Section Shape function to arrange integration point along the cross-sectional shape. This reproduces the complex cross-sectional shapes of shell element model with beam element model.

Creating material Models for beam Models

When a part modeled by shell element is turned compression deformation, the cross-sectional form buckling deformation and response loading decreases. On the other hand, beam element cannot reproduce buckling deformation because its cross-sectional form does not deformation. We have developed a user subroutine for beam element that reproduces behaviour of response loading reduction by buckling deformation using material modeling.

Generating a Connected beam

In this modeling method, components are modeled by beam element and connected by a connecting beam through a spotweld. The Connection beam method is used not only for joining beam models, but also for joining beam models and shellmodels.