SIMULIA Simpack is a Multibody Simulation (MBS) software for dynamic analysis of mechanical systems. Multibody Simulation allows an analyst to study the kinematic behavior of a system or to identify forces acting between two components at a much lower computational cost than a Finite Element Analysis.

Flexible Multibody Simulation is an elegant 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.

Design Exploration applications (apps) help the Simulation Analyst to explore multiple alternatives across a range of operating scenarios that enables optimal design selection using powerful decision-making tools. Parametric Design Study Essentials and Parametric Design Study applications enable the Simulation Analyst to define and perform studies that explore alternative designs using parametric optimization methods.

The Simulation Analyst builds these studies using the applications packaged with the Structural Generative Engineer (OPZ) role on the 3DEXPERIENCE platform. This best practice document focuses on and illustrates the various design exploration studies available in the Design Exploration application.

Target Audience: Simulation Analysts.

This Best Practices document demonstrates the use of advanced Abaqus features authored by a Mechanical Analyst using the External Solve feature of the Physics Simulation app.

The Physics Simulation is exported as an Abaqus Input file and is updated interactively with additional Abaqus keywords using a simulation process authored in the simulation templates in the Process Composer app. The updated Abaqus Input file is executed using the Compute Orchestration Service. The results are imported back into the 3DEXPERIENCE Physics Results app for post-processing.

Target Audience: Design Engineers, Mechanical Analysts, CFD Analysts, Methods Developers, and so on.

Concepts associated with performing random vibration simulations are presented in terms of the random response procedure available within the Abaqus finite element simulation software. The paper begins with some general background information on the topic of random vibration. The equations that form the basis for a random response simulation are then presented in matrix notation. The concepts of “correlated” and “uncorrelated” random excitations are discussed and illustrated. The random response procedure is demonstrated by solving a series of simple beam problems.

This Best Practices document is applicable for all releases from Abaqus 2018 to Abaqus 2023.

Target Audience: Engineers and Analysts responsible for simulating noise and vibration in mechanical systems

Traditionally modeling was carried out using different tools, which led to an inconsistent relation between the designer and the analyst. Dassault Systèmes modeled the form & fit in a set of tools, and modeled function in another set of tools.

The 3DEXPERIENCE platform provides a handful of choices in terms of mechanisms available to control and handle change. The right choice of the mechanism is dependent on variables such as organization size, how the designers (CAD team) and analysts (CAE team) communicate, size of the models, familiarity and willingness from the designer to handle finite element representations (FEM reps), and so on. The methodology discussed in this document is better suited for relatively smaller organizations that have strong communication between the designer and analyst.

Target Audience: Customers using SIMULIA apps and Technical Support Engineers.