This best practice document highlights a toe angle optimization workflow of an automotive suspension mechanism. A Simulation Analyst in the organization simulates the automotive suspension mechanism using Simpack. Simpack is a general multibody system simulation (MBS) software that enables analysts and engineers to simulate the non-linear motion of any mechanical or mechatronic system.

The Methods Developer in the organization encapsulates the Simpack analysis in a Simulation Process using the SIMULIA Optimization Process Composer application in the 3DEXPERIENCE native client. The Methods Developer further enhances this Simulation Process to configure a toe angle optimization workflow and then converts the Simulation Process into a Simulation Template. 

Target audience: Vehicle CAE Engineer, Vehicle Dynamics Engineer, Modeling and Simulation Engineer, and Methods Developer.

This best practice document describes creating and using Virtual Suspension with SIMULIA Simpack to familiarize the reader with its core concepts and best practices. To take full advantage of this Best Practice, you must be familiar with the SIMULIA product, Simpack.

SIMULIA Simpack is a general purpose Multibody Simulation (MBS) tool used for the dynamic analysis of any mechanical or mechatronic system. It enables engineers to generate and solve virtual 3D models in order to predict and visualize motion, coupling forces, and stresses.

Virtual Suspension is a method of recording the motion of the wheel center in a look-up table, which can be subsequently used to position the wheel. Additionally, you can also record the movement due to elasticity (Elastokinematic property) of the vehicle suspension.

This Best Practices document describes the usage of gear pair elements available with the Multibody Simulation (MBS) software, SIMULIA Simpack.

SIMULIA Simpack is a general purpose Multibody Simulation (MBS) software used for dynamic analysis of any mechanical or mechatronics system. It enables the engineers to generate and solve virtual 3D models to predict and visualize motion, coupling forces and stresses. The gear pair elements available within the Simpack library of elements allow simulation of the interaction between the gear pairs producing the change of speed, torque, and direction of power to be analyzed.

This document is intended to provide an overview of the gear pair capabilities of Simpack and present the various elements available in Simpack. Simpack allows simulation of the gear with increasing levels of detail.

Target audience: A mechanical engineer who has an understanding of gear pairs and who would now like to incorporate gear pairs into simulation to be able to analyze and optimize the mechanical or mechatronics system.

Dynamic characteristics of rail vehicles play a crucial role in ensuring the overall operational safety, comfort, and adequate level of performance of the mode of transport. Thorough evaluation of vehicle dynamics through physical tests and measurements to comply with global operational standards involves significant amount of effort and resource due to the infrastructure requirements and complexity involved in railway design.

Rail vehicle dynamics is primarily driven by the wheel-rail interaction. The dynamic forces originating from the wheel-rail contact serves as a primary source of excitation in the rail vehicle operation. SIMULIA Simpack Rail module is used to model the rail-wheel contact and the corresponding dynamic behavior of the vehicle under various operational loads.

This Best Practices document serves as a technical guide to all the users of Simpack Rail module to gain a holistic understanding of the multibody technology for Rail vehicle dynamic simulation and the available modeling features.

The target audience for this Best Practice is the Rail Dynamic Analyst.

SIMULIA Simpack is a Multibody Simulation (MBS) software for dynamic analysis of mechanical systems. A simplified approach to modelling mechanical systems is to assume the components to be rigid bodies. The assumption that bodies are infinitely stiff enables quicker solution to the equation of motion as the number of Degrees of Freedom (DOF) or the number of unknowns in the model are reduced. 

There are several applications where most of the system can be assumed rigid but elastic behavior of some components is still critical for the dynamic analysis. Flexible Multibody Simulation is an elegant alternative approach that combines the benefits of the traditional MBS approach with the high fidelity provided by the Finite Element method.

This document provides an overview of model reduction techniques, preparation of FE model, types of couplings, substructure generation steps, quality check of FBI files, and the best solver settings suitable for Flexible Multibody Simulation.

Target audience: Analysts, Consultants and Tech Support