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RecurDyn

RecurDyn is a Computer Aided Engineering (CAE) software focused on Multibody Dynamics (MBD), with extended multiphysics capabilities. RecurDyn combines the power of an optimized recursive solver with superior contact technology, providing best-in-class simulation performances. The effectiveness of RecurDyn really comes out when approaching large-scale multibody models, including multiple contacts and flexible bodies.

Along with the powerful solver, RecurDyn features a natural Windows-based User Interface which is intuitive and easy to use, as well as a custom application development environment which enables users to automate complicated and/or tedious tasks.

RecurDyn Analysis Options

  • Rigid and Flexible Multibody Dynamic Analysis
  • Kinematic Analysis
  • Static Analysis
  • Design Studies and Design of Experiments
  • Sensitivity Analysis
  • Vibration (Linear) Analysis

Interdisciplinary

RecurDyn features Interdisciplinary modules which allow you to:

  • Model flexible bodies within your system using Finite Element Analysis (FEA)
  • Simulate Particle Dynamics with Discrete Element Method (DEM)

Communicators

RecurDyn has Communicator modules which allow it to interface with other softwares.
This enables:

  • Cosimulation with control systems in Matlab/Simulink
  • Cosimulation with fluid dynamics in Prometech Particle Works (only MBD software with such capability)
  • Importing/exporting geometry from various Computer Aided Design (CAD) systems

Toolkits

RecurDyn features Toolkits which are optimized for various applications across many industries.
These include:

  • Media transport systems
  • Machinery
  • Systems with chains, belts, and gears
  • Tracked vehicles such as construction and agricultural equipment, as well as military vehicles.

 

  • Highlights | Webinars

  • RecurDyn Chain Toolkit: an effective tool to simulate mechanical systems including chains

      Wednesday 14 June 2017

    This webinar introduces the Chain Toolkit implemented in the multibody software RecurDyn. Thanks to the toolkit the user can automatically create chain transmission models; this significantly reduces the time required by the pre-processing phase even for complex models. A wide library of entities (sprockets, guides and chain links) allows the automatic creation of the 3D CAD once the user has selected the entities of interest for his/her model. Furthermore, dedicated interfaces contain all the parameters necessary to describe the property of the chain; this speeds up the modification of the properties of the system while ensuring the maximum flexibility in terms of customization of the model. RecurDyn solver provides unparalleled performances when solving multibody problems with a high number of contacts, therefore it is the perfect tool to simulate the dynamic behavior of chain mechanisms.

    During the webinar the capabilities of the Chain Toolkit are presented by briefly describing its features and through several examples.

  • Go to the webinar area

MBD for ANSYS | Multi-body DYNAMICS simulation with MBD for ANSYS

RecurDyn

MBD is a powerful, multifaceted extension to ANSYS Workbench, specifically developed to simulate both kinematics and dynamics of mechanical systems.

This module features the core technology of RecurDyn, the most modern multi-body technology in the market.

Discover its effectiveness in simulating complex contacts over multiple surfaces. Experience the ability to verify models and reach a reliable solution quickly. Simply, choose the body to verify, browse through the joint load data, pick the critical points and press the button!

This easy to use add-on will automatically generate the desired Static Structural FE cases, all within ANSYS Workbench!

 

 

 

For all information about this technology please visit

"MBD for ANSYS" page

Main application areas

Fuel Injection

Fuel Injection

Fuel injectors are subjected to extremely rapid movements due to the necessity of spraying the fuel in the combustion chamber in less than a millisecond. A multibody model has been developed using RecurDyn to study the high-speed dynamical behavior of the injector during a typical working cycle. The model contains both rigid and flexible bodies: the pin is modelled using the proprietary Full Flex technology which includes a finite element body in the dynamical simulation. This choice allows to evaluate the influence of the flexibility on the body motion and to calculate the stress on the component. The spring is modelled using beam elements to correctly represent the inertial properties and the contact between the coils. All these elements create a reliable numerical model which can be used to evaluate the position of the bodies and the contact forces between the pin and the housing in order to predict the performances of the injector.

 

Plastic Film Dragging

Plastic Film Dragging

RecurDyn offers unparalleled performances when solving the dynamics of flexible bodies interacting through contacts with other bodies. In this example these features have been tested simulating the motion of a very thin plastic film (32µm) dragged by two rollers. The film is connected to a tensioner and pulled by two rollers which fold the film to perform the first step of a forming process.
The film has been meshed with shell elements using the proprietary Full Flex technology. The position of the film is controlled by contacts only (the connection with the tensioner is the only exception): flexible-to-rigid bodies contacts have been used for the contacts with the rollers whereas flexible-to-flexible contact is used to represent the film self-contact. The model is used to evaluate the dynamic behavior of the film during the forming process and to evaluate the stresses caused by the process.

 

Circuit Breaker

Circuit Breaker

Multibody simulation is the best technology to analyze the dynamic behavior of safety circuit breakers. These mechanisms are characterized by high speed dynamic motions: to prevent damages the switch from on to off position must occur in a few milliseconds.

The premium software RecurDyn has been used to simulate a Double Pole Single Throw Switch with three different modelling schemes: the first model uses rigid bodies and joints, in the second model the joints have been replaced with contacts and in the third the main components of the switch have been modelled using flexible bodies. The comparison of the results highlights the influence of clearances (second model) and flexibilities (third model) on the commutation time and commutation force, providing useful information for the designers.

 

Gluer

Gluer

Studying the dynamics of cam mechanisms is crucial to obtain reliable, efficient and fast machines. RecurDyn offers the possibility of studying complex cam mechanisms to calculate positions, velocities and accelerations, to evaluate possible interferences and to obtain the loads acting on each component. In this example a gluer machine has been studied using RecurDyn: the cam has been represented using a 2D contact, the bodies have been considered rigid at first and then they have been also modelled as Full Flex bodies to evaluate the influence of flexibilities on the machine performances. The model provided useful information to optimize the cam profile, to evaluate the overall motion of the mechanism and to obtain the loads later used to perform the structural verifications.

 

Engine Dynamics

Engine Dynamics

A four-stroke engine has been deeply analyzed through detailed multibody dynamics simulation. The real engine components (including engine block, piston, rod and crankshaft) have been imported as flexible bodies and assembled. Efficient contact technology allowed a realistic simulation of kinematic joints with clearance between the coupled parts. A fine representation of the experimental engine loads completed the engine model. A so-defined model offers precious outcomes: the contact analysis provides detailed information about pressure and friction between the parts, useful for wearing estimation. Also, joint clearances and bodies flexibility allow the precise detection of excessive part deformations and stresses or unwanted system vibrations. Moreover, special purpose components (e.g. elastohydrodynamic (EHD) bearings) can be easily modeled with RecurDyn’s feature package dedicated to engine and powertrain simulation.

 

 

 

 

 

Forklift Dynamics

Forklift Dynamics

A client was willing to evaluate the dynamics performance of a new concept forklift, then a fully-functional multibody model of the forklift has been built by assembling the client CAD geometries. The forklift wheels has been finely represented with sophisticated tire features, implementing a sophisticated tire model calibrated on experimental data. Moreover, the interaction between the forks and a real freight was simulated thanks to efficient contact features. A so-defined model can be used to simulate many different scenarios: for example a crucial handling test can be performed by simulating the loaded forklift running against a standard obstacle. Various load cases and driving maneuvers can be set up in order to assess the forklift static and dynamic stability; furthermore, the loads affecting each forklift part can be measured and used as input for structural and fatigue life verification.

 

Printer

Printer

RecurDyn offers a dedicated toolkit to pre-process, solve and post-process problems involving flexible media. The toolkit is therefore the best choice to analyze printers, copiers and other sheet feeding machines. The final portion of the paper path of a laser printer has been studied using the Media Transport Toolkit to evaluate the influence of the corrugating roller which is used to corrugate the sheet to keep it straight before falling into the tray. The toolkit leads to significant advantages during both the pre-process and the post-process: the creation of the entities is automated to simplify and speed up the pre-processing (e.g. the joints connecting the rollers to the frame and the contacts between the rollers and the media are automatically created). In the post-processing environment special results are available such as the sheet position, velocity and acceleration. RecurDyn Media Transport Toolkit proved to be an efficient solution to study problems involving flexible media.

 

Tracked Vehicle

Tracked Vehicle

RecurDyn offers two toolkits completely dedicated to tracked vehicles. One is dedicated to low mobility vehicles (i.e. low speed vehicles) whereas the second one to high mobility vehicles (i.e. high speed). In the present example a tracked bulldozer has been simulated to evaluate the dynamic behavior of the vehicle on different terrains and obstacles. The model can be used to calculate the loads on the vehicle structure and to analyze in detail the forces acting between the links. The toolkit contains several entities which can be automatically included in the model and personalized based on user data. Furthermore RecurDyn solver offers unparalleled performances when solving this kind of problems, delivering reliable results in short time.

 

Excavator

Excavator

A multibody model of an excavator has been developed to calculate the loads acting on the structure and perform the static structural verifications of the components. Furthermore, the influence of the flexibility has been taken into account by using both the Reduced Flex and the Full Flex approaches. The developed model can be used to perform the sizing of the excavator components (e.g. hydraulic cylinders, slew ring, hydraulic pumps), to evaluate the motion of the machine, to simulate particular loading conditions and to obtain the forces/moments acting between the different bodies. The calculated loads can then be used to correctly perform the static structural verifications taking into account both the inertial effects and the external loads effects. Furthermore, the Reduced Flex and the Full Flex models provide indication of the stresses on the structure, which can be used to perform a preliminary sizing.

 

Stranding Machine

Stranding Machine

EnginSoft has developed in collaboration with MARIO FRIGERIO a multibody model of a stranding machine. Stranding and closing planetary machines are huge equipment conceived to twist, at noticeable speed, multiple heavy spools of strand, in order to manufacture large section steel ropes. The model has been developed to identify the worst operating conditions, to choose the right electric motors, to verify the braking system and to obtain the sizing loads for all the parts of the machine. The final user of the machine will be allowed to manufacture different types of rope, by combining different strands in different manners. This means that the machine can be loaded by spools having different size, different position in the main rotor, different level of unbalance, and different twisting speed. The problem has been approached through a Design of Experiments which analyzed 64 different load cases to identify the worst operating conditions. The collaboration has provided reliable results in a shorter time, while preserving the unparalleled MARIO FRIGERIO’s level of quality.

 

Events & Webinars

 

  • Webinar

    RecurDyn Chain Toolkit: an effective tool to simulate mechanical systems including chains

  •   Wednesday 14 June 2017

  •   11:00 am CET to 11:20 am CET

  • Language: English Register now

  •   Description

    This webinar introduces the Chain Toolkit implemented in the multibody software RecurDyn. Thanks to the toolkit the user can automatically create chain transmission models; this significantly reduces the time required by the pre-processing phase even for complex models. A wide library of entities (sprockets, guides and chain links) allows the automatic creation of the 3D CAD once the user has selected the entities of interest for his/her model. Furthermore, dedicated interfaces contain all the parameters necessary to describe the property of the chain; this speeds up the modification of the properties of the system while ensuring the maximum flexibility in terms of customization of the model.

    RecurDyn solver provides unparalleled performances when solving multibody problems with a high number of contacts, therefore it is the perfect tool to simulate the dynamic behavior of chain mechanisms.

    During the webinar the capabilities of the Chain Toolkit are presented by briefly describing its features and through several examples.

  • Topic areas

    • RecurDyn Chain
    • Toolkit Multibody simulation
    • Chains dynamic simulation
  •   Speakers:

    Davide Marini

    Attendees can ask questions to the speakers at the conclusion of the 20 minutes on-line session

 

Missed any of our webinars?

See below some of our past webinars and explore the entire collection on our EnginSoft's YouTube Channel.

Enjoy the recordings!

 

 

  • Recorded Webinar

    RecurDyn as a unique ally in forklift design and testing

  •   Description

    The webinar showcases the virtual reproduction of a forklift validation test using unique tools of RecurDyn V8R5: contact technology, flexible bodies and tire model.

  •   Speakers:

    Riccardo Zoccarato

 

  • Recorded Webinar

    Achieve Multi-Flexible-Body-Simulation using RecurDyn

  •   Description

    Discover how the enhanced release allows engineers at different user-levels to easily build the system model and switch between Rigid/Full Flex/Reduced Flex!

  •   Speakers:

    Davide Marini, Riccardo Zoccarato

Download Area

RecurDyn Brochure

Professional Multi-Body Dynamics Simulation Software

Download the RecurDyn Brochure

MBD for ANSYS Brochure

The Solution for Multi-Body Dynamic Simulation within ANSYS

Download the MBD for ANSYS Brochure

EnginSoft: A Key partner in Design Process Innovation

 

What can EnginSoft do for you?

EnginSoft is a multinational company involved in the Simulation-Based Engineering and Sciences, that provides advanced solutions for engineering, consulting, training and research in virtual prototyping to accompany businesses into the future.

EnginSoft can be the partner that helps you to improve the productivity exploiting the simulation with ANSYS in your decision process. With EnginSoft you can discover the powerful capabilities of the software technologies included in the ANSYS Cluster APP, satisfying design objectives in terms of efficiency, quality and cost saving.

EnginSoft distributes and supports Maplesoft products in Europe and Turkey.

 

Instrumental solutions for engineering, consulting, training and research in virtual prototyping to accompany businesses into the future

EnginSoft was founded in Italy in 1984 at the forefront of the emerging field of Simulation Based Engineering & Science (SBES). Today the Company retains an international lead in the sector with bases in Italy, France, Germany, UK, Norway, Sweden, Turkey and the USA.

Our biggest asset is our matrix of highly specialist engineers who possess extensive and multidisciplinary expertise in leading edge engineering simulation technologies. A holistic approach to consultancy provides global support for clients in close integration with key partnership companies located in Greece, Turkey, Israel, Portugal, USA, Brasil, Spain and Japan.

Throughout its long and successful history EnginSoft has remained at the forefront of technological innovation with a track record as a 'sector catalyst' for changing the way that SBES and Computer Aided Engineering (CAE) technologies are applied across several industrial sectors. These include: Automotive, Aerospace, Biomechanics, Defence, Energy, Consumer Goods, Civil Engineering and Oil & Gas.

Provision of High Performance Computing (HPC) resources, making EnginSoft the most reliable and knowledgeable partner for product development.

The knowledge and commitment of EnginSoft's engineers' helps clients' identify the most suitable solutions for complex requirements. Leading edge technologies, honed multi-disciplinary methods and access to advanced High Performance Computing (HPC) are all applied to achieve shortened development times and improved resource utilization.

EnginSoft also makes sure that the underpinning expertise is effectively transferred to all customers, who thereby acquire a tangible, strategic advantage.

     

Contact

EnginSoft Italy

Competence Centre Padova

Via Giambellino 7, - 35129 PADOVA

+39 049 7705 311
info@enginsoft.it

www.enginsoft.com

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