See What’s New in Simpack 2022
Watch our On Demand eSeminar: Accelerate Product Development with Mechanical System Simulation
Currently, the most up-to-date major version of Simpack is Simpack 2022.
Every current Simpack user is encouraged to download and upgrade to this latest version, or at least to one of the minor releases available. Here is an overview of the most up to date releases of Simpack as of today:
- Simpack 2022.1 ( released 2021-06-18 )
- Simpack 2021x.5 ( released 2021-05-28 )
- Simpack 2021.5 ( released 2021-06-18 )
Watch the On-Demand eSeminar:
Learn more about Simpack and the new capabilities related to:
The Simpack EHD module has been enhanced to include thermal balance and mass conserving effects in the fluid. This allows the EHD model to compute the temperature evolution over time in the fluid, allowing to observe the heating up of the bearing. The mass conserving algorithm will help the user to analyze cavitation effects and oil flows in more detail.
Additionally, the output of this element has been extended to provide out-of-the-box results at bearing half-width.
The dynamic bushing force element is used to model accurately the specific frequency behavior of engine and suspension bushing mounts. With recent versions of Simpack, there have been several enhancements brought to this element:
Optional direction coupling of the bushing stiffness
It is now optionally possible to specify the coupling effect between different directions of the bushing. This can be used for example to better model cylindrical bushings with isotropic or orthotropic behavior.
Enhanced hysteresis shape definition
Dassault Systémes has introduced a new shape factor to refine the fitting of the shape of the hysteresis. This factor does not affect the overall amplitude of the hysteresis but gives the user control of the shape of the curve.
Electric Machine Interface
Since Simpack 2019x, Simpack supports the application of electromechanical forces with the Electric machine interface force element. This element can apply distributed forces on the stator and the rotor of the machine. It uses as an input a set of characteristic maps. A characteristic map is a map of lumped forces/torques or force densities as a function of the rotation of the rotor given at a specific speed/torque point of the e-drive machine.
The interface has been extended recently to support Reduced-Order Models that can be produced by CST Studio Suite. The added value of using a Reduced Order Model (ROM) for this application is that it is possible with a ROM to run different load cases such as torque run-up or speed run-up with one single element.
Simpack Roller Bearing
Several significant enhancements have been recently added to the Simpack Roller Bearing model:
It is now possible to apply a user-defined profile to the rollers
The lateral distribution of the loads on the roller can now be computed. This new feature vastly extends the functionality and applications of this modeling element. Including this bearing element in complete mechanical drives, models will provide improved results for misalignment calculations.
The contact force between the elements can now take into account optionally the damping effects due to lubrication.
Simpack Rail and Flextrack
Fast calculation of flexible track/structures
Dassault Systémes has introduced a new method for modeling flexible tracks called “linear Flextrack”. This new method considerably reduces the model build time and dramatically improves the solver performance, considerably reducing solve time. As an example, Flexible tracks simulations can now be run in a matter of few minutes rather than hours.
Improved Rail Contact Model for Supporting Standstill
The Simpack Rail contact model has been extended to support standstill conditions as an option in the rail/wheel pair element that allows for the stick/slip transition of the rail contact at very low velocity. It is now possible with this option to model new workflows :
Emergency braking simulation
Improved static test rig set-up and analyses
Modeling real-life velocity profile of light-rail vehicles including stop/start behavior between stations.
With the Simpack Belt module, it is now possible to plot belt transverse deflections and stick-slip contours on the belt shape and other quantities such as longitudinal or normal force distributions.
This enables analysts to gain more insight into the belt behavior for typical belt analysis scenarios, allowing them to identify critical regions at first glance.