RecurDyn 2025: The High-Fidelity Platform for Complex Mechanical System Simulation

RecurDyn 2025 is a powerful, integrated Computer-Aided Engineering (CAE) software specializing in multibody dynamics (MBD), with a strong emphasis on accurately modeling systems involving large deformations, complex contact conditions, and combined rigid/flexible bodies. It enables engineers to simulate the realistic motion, loads, and stresses of intricate mechanical systems—such as vehicle suspensions, track systems, robotics, and industrial machinery—throughout their entire operational range, providing critical data for performance, durability, and noise/vibration analysis.

Core Function: Predicting Realistic System-Level Behavior
RecurDyn’s core strength lies in its robust solver and modeling capabilities for handling nonlinear dynamics. It excels at simulating scenarios where components undergo significant deformation, make and break contact frequently, or interact through complex force elements, which are often challenging or impossible to analyze accurately with simpler motion simulation tools.

Key Simulation Technologies & Applications:

1. Advanced Multibody Dynamics with Flexibility

  • Recursive Formulation: Uses an efficient recursive formulation for solving large-scale multibody systems quickly.

  • Integrated Flexible Body Analysis (FFlex): Incorporates finite element-based flexible bodies directly within the dynamic simulation, allowing parts to bend and deform under load without needing external co-simulation. This is crucial for accurate stress prediction in components like linkages, belts, and sheet metal.

2. Sophisticated Contact & Interaction Modeling

  • Surface-to-Surface Contact: Features a powerful contact algorithm for simulating realistic interactions between complex 3D geometries, such as gears meshing, pulleys with belts/chains, or tracked vehicles on rough terrain.

  • Toolkits for Specialized Systems: Includes dedicated toolkits for modeling tracked vehicles (caterpillar tracks), belt-chain systems, and gearboxes with parameterized components.

3. Integrated Durability & Controls Analysis

  • Durability & Fatigue Prediction: Directly exports dynamic load histories to fatigue analysis software (like nCode DesignLife) to predict component life.

  • Co-Simulation with Controls: Interfaces with MATLAB/Simulink for simulating mechatronic systems where physical dynamics interact with control software.

4. Solver Technology & Performance

  • Parallel Processing: Supports high-performance computing (HPC) to reduce simulation time for large, complex models.

  • Nonlinear & Large-Deformation Solver: Specifically architected to handle the stiff equations and discontinuities that arise in systems with contact and flexibility.