RecurDyn

RecurDyn is a multi-body dynamics (MBD) simulation software developed by FunctionBay, designed for analyzing the motion behavior of complex mechanical systems under real-world conditions. It enables engineers to simulate how components interact through joints, contacts, flexible bodies, and forces—before building physical prototypes.

At its core, RecurDyn focuses on dynamic system simulation, where rigid and flexible bodies move and interact over time. Unlike static analysis tools, it captures time-dependent motion, inertia effects, and nonlinear interactions, making it particularly useful for mechanisms with multiple moving parts.

One of RecurDyn’s defining strengths is its recursive formulation solver, which allows it to efficiently handle large-scale systems with many interconnected bodies. This makes it well-suited for industries such as automotive, robotics, heavy machinery, and defense systems, where assemblies can become computationally complex.

The platform also supports flexible body dynamics through integration with finite element methods (FEM), enabling engineers to simulate deformation alongside motion. This is critical for accurately predicting real-world behavior in components like suspension systems, tracks, belts, and compliant mechanisms.

RecurDyn includes specialized toolkits for domain-specific applications such as track systems (tracked vehicles), chains, belts, gears, and robotics, which significantly reduce setup time for common mechanical systems.

Because of these capabilities, RecurDyn is widely used in product development workflows where motion behavior, durability, and system-level interactions must be validated early in the design cycle.

Key Features

• Recursive formulation solver optimized for large multi-body systems
• Rigid and flexible body dynamics with FEM coupling
• Advanced contact modeling including nonlinear and frictional interactions
• Dedicated toolkits for tracks, chains, belts, gears, and robotics
• Co-simulation support with control systems (MATLAB/Simulink integration)
• High-performance computing (HPC) support for large-scale simulations
• Pre/post-processing tools for motion visualization and result analysis
• Fatigue and durability analysis through motion-based loading conditions
• CAD integration for importing assemblies from major CAD platforms
• Python scripting support for automation and batch simulations

Best For

Mechanical and simulation engineers working on motion-heavy systems such as automotive suspensions, tracked vehicles, robotics, industrial machinery, and defense equipment.

Particularly valuable for teams that need accurate dynamic behavior simulation with flexible components, where traditional rigid-body tools fall short.

Who It’s Not For

Engineers looking for general-purpose FEA or CFD tools. RecurDyn is not meant for structural-only analysis or fluid simulation.

It’s also not ideal for small teams or beginners who just need simple motion studies—its capabilities come with setup complexity and a learning curve, especially when dealing with contacts and flexible bodies.

Platform

• Windows desktop application
• Supports integration with CAD and CAE tools
• HPC and cluster execution supported for large simulations

Pricing

Commercial engineering software with custom enterprise licensing.

• Pricing is not publicly listed
• Typically licensed per seat with additional modules (track, belt, etc.)
• Trial versions and academic licenses available through partners

Pros

• Highly efficient solver for large, complex multi-body systems
• Strong flexible body simulation capability compared to many MBD tools
• Specialized toolkits significantly reduce modeling time for common systems
• Accurate contact and nonlinear interaction modeling
• Well-suited for real-world mechanical system validation
• Good integration with control systems for mechatronic simulation

Cons

• Steeper learning curve compared to basic motion simulation tools
• UI and workflow can feel less modern than newer platforms
• Requires careful setup for accurate contact and flexible body simulations
• Expensive for small teams or individual users
• Smaller community compared to tools like Adams or Simcenter

Rating

⭐ 4.3 / 5

Editorial Take

RecurDyn sits in a very practical middle ground between academic MBD tools and heavy enterprise simulation platforms. Its recursive solver and flexible body capabilities make it particularly strong for real-world mechanical systems that involve complex motion and deformation.

Where it stands out is in track, chain, and contact-heavy simulations, where many competing tools either struggle with performance or require excessive setup effort. It’s not the most beginner-friendly tool, but for serious dynamic simulation work, it’s highly capable and efficient.

Alternatives

MSC Adams, Simcenter 3D Motion, Altair MotionSolve, MapleSim, COMSOL Multiphysics

Used In

• Automotive suspension and drivetrain simulation
• Tracked vehicle and defense system modeling
• Robotics and articulated mechanism design
• Conveyor systems, belts, and chain drives
• Heavy equipment and construction machinery
• Mechatronic system co-simulation
• Durability and fatigue load generation

Founded

2000 (FunctionBay)