Reduced Order Models for System Simulation with Ansys
Surrogate models for different physical domains
Learn how to combine the accuracy of field simulation with the speed of system simulation for highly complex systems. This training is offered as a 2-day course.
Duration
2 days
Prerequisites
Basic knowledge of Ansys Mechanical, Basic knowledge of Ansys Twin Builder
Software used
Ansys CFD, Ansys Maxwell, Ansys Mechanical, Ansys optiSLang, Ansys Twin Builder, Model Reduction inside Ansys
- Fast system modeling of multi-physical effects
- ROM models for mechanics, electromagnetics, temperature & CFD
- Create metamodels from FEM, DoE and experimental data
- License "Model Reduction inside Ansys" for 3 months free of charge
Description
The trend for nearly all products is going in the direction of highly complex mechatronic systems whose components are developed by different departments and which must be united in an appropriate manner. One powerful tool for this is system simulation. In this training course you learn how to analyze the increasingly strong interactive effects of different components in a complex system and how to use the exchange of Reduced Order Models (ROM) and further surrogate models that, as a means of collaboration, has become increasingly important. Combine the accuracy of 3D simulations of various physical domains with the speed of system simulations. In this course you will acquire the necessary knowledge to use compact surrogate models for the representation of mechanical, electromagnetic, thermal and fluidic phenomena. Furthermore, we will deal with the creation of metamodels from experimental data.
Simulation engineers from the sectors of structural mechanics, magnetic, thermal or fluid fields learn to create and apply reduced models in their calculations. Engineers from the field of system simulation will understand, where the reduced models come from and what their physical content is. Developers and project managers working in the field of system integration learn how to use reduced order models for cooperation with development partners and customers.
Detailed agenda for this 2-day training
Day 1
01 Field and System Coupling in Ansys Twin Builder
- Methods of coupling between the physical domains
- Short Introduction Ansys Twin Builder
- Conservative and causal connections
- Workshop 1D Simple Mass Oscillator: causal and conservative modeling
02 Modal reduction for mechanical systems
- Workflow for modal reduction
- State space formulation and SPMWRITE
- Export/Import and use of state space matrices in Ansys Twin Builder - State Space Model Interface
- Scope of applications and consideration of non-linearities
- Workshop: ROM for membrane of a loudspeaker
03 Electromagnetic Reduction (ECE)
- Reducing nonlinear electromagnetic systems
- Steps for the extraction of the ECE model with Ansys Maxwell
- Scope of application and consideration of eddy currents
- Outlook to ECE for Motors
- Workshop: Reduction of an electromagnetic-mechanical actuator with eddy current area (Voice Coil)
- Workshop ECE: completion of the loudspeaker model
04 Model Order Reduction (MOR) for Thermal Systems
- Brief introduction of the Krylov-based model reduction and necessary steps
- Working with the ACT extension ‘Model Reduction inside Ansys’ (MORiA) for thermal problems
- Scope of Application (other physical domains)
- Workshop battery pack: simulation of a transient heating/cooling process with MOR inside Ansys
Day 2
05 Stationary, non-linear meta models (MOP, DX-ROM, Static ROM)
- Use of experimental and calculated data (DoE) for making ROM
- MOP-ROM and DX-ROM as a generic procedure for system description
- SVD Reduction with Static ROM for Field Outputs
- Workshop: Nonlinear and temperature-dependent shock absorber as ROM (Field and Scalar Outputs)
- Example: MOP from experimental Data using Excel OptiSLang Add-in
06 Linear time-invariant system approximation (LTI, LPV, SISO, MIMO)
- Linear, time-invariant system behavior
- Tools for LTI and SISO and MIMO system identification
- Identifying the LTI system (system response from transient flow simulation)
- Workshop LTI ROM: temperature behavior of an air-cooled battery pack
- Example: LTI ROM creation from Ansys Mechanical (MOSFET)
07 Dynamic ROM for nonlinear and transient systems
- Dynamic ROM based on artificial neural networks (AI)
- Procedure for training and generating the signals
- Workshop: Creation of a Dynamic ROM for pipe flow system
- Example: Creation of a Dynamic ROM for a heat exchanger
08 Co-simulations using FMU and Interface to 3rd Party Tools
- Opportunities and requirements for co-simulation
- Functional mockup unit or functional mockup interface (FMU / FMI) as communication interface
- Workshop: Robot arm as co-simulation between Ansys Twin Builder and the RBD Block
- Example: Valve movement with Twin Builder and Fluent
- Example: Co-simulation of an electromagnetic-mechanical actuator with Ansys Maxwell and Ansys Twin Builder
Your Trainers
Dr.-Ing. Martin Rendek
Joël Grognuz
Placement in the CADFEM Learning Pathway
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