Integration of FEA and system dynamics can be puzzling to many engineers. However, this analysis of mechanical systems is now easier thanks to the introduction of a new FE Part modeling object. This part is used for large deformations and geometric nonlinearity simulations. This new object can be modified using Adams/View. Additionally, it has reduced test benchmark computational times by as much as 8.5 hours.
The new part object formulation options include Absolute Nodal Coordinate Formulation (ANCF) and Geometrically Exact Beam Formulation (GEBF); which means the part can be used for 3D Beam formulation and basic 2D uses.
Joseph Little, Virtual Tools Engineer at Chrysler said, "The new Adams nonlinear beam implementation is a great feature that makes it much easier to add nonlinear compliance and contact behaviors to the model, without affecting simulation times. Used creatively, the beam element can represent a variety of situations that previously required flex body generation and/or multi-component part representation, saving time and making parameterization easier.”
Integration of FEA and system dynamics should also be simplified by improved Adams-Marc co-simulation. This will increase the accuracy of multi-body dynamics simulations by including nonlinear structures, materials, and boundary conditions that are closer to reality. As rigid moving parts will be simulated in Adams as opposed to FEA, computation time should again be reduced.
According to Dr. Steve Jia, the Chief Engineer at Litens Automotive Group, "The Adams-Marc co-simulation capability more than satisfies our guideline of 'reasonable results in a reasonable time.' With up to a 90% reduction in computation time, optimization using advanced nonlinear FEA becomes practical. Such development provides a great benefit and is crucial for our product development.”
Other improvements to the Adams release include:
- Adams/Machinery
- Easier modeling of Cam-follower systems
- Adams/Car
- New rollover stability tests (corkscrew, sand bed and embankment)
- Animation of tire deformation forces and contact forces on Adams/PostProcessor
- Smart Driver improvements (backwards driving for automatic & simple powertrain, speed profile spline interpolation, continuous target acceleration, smoother throttle & braking)
For more details on the release, checkout the Adams webinar available here:
Images and source courtesy of MSC Software.