Understand and Simulate Damping of Mechanical Vibrations
Damping as an annoying unknown or for the targeted reduction of vibrations?
Learn how to selectively reduce undesirable vibrations in simulations and take parasitic damping into account. This training is offered as a 2-day course or alternatively as a self-paced eLearning course.
Duration
2 days
Prerequisites
Basic knowledge of Ansys Mechanical
Software used
Ansys Mechanical
- Material and component damping in accordance with the VDI 3830 classification
- Practical exercises for these damping phenomena in Ansys Mechanical
- Methodical procedure for reducing vibration through simulation
- Consider parasitic damping effects such as joints
Description
Damping is frequently used in technology to reduce vibrations. On the other hand, it is essential for the accuracy of a structural dynamics simulation to know and be able to adequately model parasitic damping mechanisms such as joint damping and radiation damping through adjacent fluids.
You would like to not only measure the vibration problems in your products, but also analyze them in a targeted manner and develop countermeasures? You already solve engineering problems related to structural dynamics and would like to systematically explore the topic of damping in theory and practice? This course is for participants who have previous knowledge in dealing with dynamics simulation but have questions about handling different damping models skillfully.
In this training, you will learn about the most important damping effects based on the agenda of the VDI 3830 for material and component damping. You will learn how these damping phenomena can be mapped in Ansys Mechanical in selected practical exercises. Learn the methodical procedure to successfully carry out typical vibration reduction tasks using simulation.
Get a first impression and test the first eLearning module of this training course without any obligation. No costs, no notice period.
Detailed agenda for this 2-day training
Day 1
01 Effective and ineffective damping methods
- Damping: classification and overview based on VDI 3830
- Technical areas of application
- Parameters for viscous damping
- Effective and ineffective damping methods
- Workshop millenium bridge: damping can and must be designed
02 Virtual damping test rig
- Workshop: Damping possibilities and impact in a transient analysis
- Viscous vs. hysteresis damping (structure damping)
- Basic principles of the damping models and solution settings in Ansys Mechanical
- Prominent: damping ratio and loss factor
- Converting the most important damping characteristics
- Workshop: virtual damper test bench – harmonic excitation
03 Vibration reduction through tuned mass dampers (TMD)
- Technical application areas
- Complex modal analysis for simulating damped, free vibrations
- Basic idea of dampers – how does the trick work for practical tasks too?
- Demo: damper design – aim of reducing vibrations by 90%
- Workshop: practical damper design for a pedestrian bridge
04 Vibration isolation
- Technical application areas
- Basic principle of vibration isolation
- Transfer function and characteristic curve of a decoupled vibration
- Parameters for the effectiveness of vibration isolation
- Workshop: receiver insulation for a sensitive device
- Workshop: source isolation for a compressor
Day 2
05 Damping in solid materials: measurement
- Viscoelastic material behavior
- Frequency and temperature dependence
- Experimental determination of damping parameters
- Demo: material damping of stainless steel - evaluating a decay test
- Workshop: evaluating the half width at the top bar in resonance mode
- Typical loss factors of different materials
06 Damping in solid materials: simulation
- Application example: targeted damping design via simulation
- In-depth topics: damping models and using them in Ansys Mechanical
- Engineering approach: Modal strain energy approach & Rayleigh damping
- It can also be more precise: coupled, reduced modal damping matrix
- Proportional, non-proportional damping
- Simulate frequency-dependent damping from DMA test: “harmonic viscoelasticity”
- Tips for setting solutions for different damping models
- Workshop: targeted damping design – composite sheets
07 Damping in assemblies
- Damping influences on an assembly
- Measurement of damping in assemblies
- Typical loss factors of assemblies
- Damping in joints between components
- Displacement damping in joints
- Demo: proposal for mapping joint damping
- Workshop: vibration of an assembly with different damping materials
08 Other technically relevant damping phenomena
- Role of friction: vibration damping or excitation
- Destabilizing effect of rotating damping in shafts
- Damping and excitation in the oil film of hydrodynamic journal bearings
- Acoustic radiation damping by fluids
- Active damping in system simulation
Your Trainers
Mike Feuchter
Dr.-Ing. Marold Moosrainer
Dr.-Ing. Giampaolo Franzoso
Sebastian Hoffmann
Dr. Ing. Benoit Fontenier
Placement in the CADFEM Learning Pathway
Participant data
Additional information
Commentary
Get a first impression and test the first eLearning module of this training course without any obligation. No costs, no notice period.
Whether eLearning, classroom courses, live online training or customized workshops - together we identify the best option for you.
What CADFEM customers are saying
Thomas Fabig
Freelance Computational Engineer, Ingenieurbüro Thomas FabigDamping, Isolating, Absorbing - with the eLearning course ‘Understand and simulate damping of mechanical vibrations’, I feel well equipped for modeling and selecting suitable simulation methods for vibration reduction. As an extension to the training ‘Structural dynamics and vibration technology’, I can highly recommend this training.
Do you have questions on the training or the eLearning?
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For more information on the validity and how booking with the code ACADEMIC50 works, please visit our page on training for academic users.
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If the minimum number of attendees is not reached, we reserve the right to cancel the training seven days before it is due to start at the latest. We are happy to inform you on changing your booking to an alternative date. Please note that we accept no liability for hotel or travel bookings that attendees have already made.
Usually the training courses start at 9:00 am and end at 5:00 pm of the respective local time. The actual course times will be stated in the booking confirmation. Please note that, depending on the training host, there may be a possible time shift between your and the provider's local time. Therefore all local times are provided with the valid time shift to Greenwich Mean Time (GMT).
To get a clear impression of our online learning format, we offer you a trial allowing you access to the starting module of an eLearning course of your choice. No costs, no cancellation period or anything similar. Moreover, with this free test access you can check all the technical requirements for a smooth learning process. You can easily request the free module from any eLearning course.
Each online course day comprises four eLearning modules. You should ideally allow 90 to 120 minutes of uninterrupted learning time for each module. This will allow you to acquire the knowledge provided by a module and to consolidate it through quiz questions and Ansys exercises. By dividing each module into micro learning units, you can also make good use of smaller time windows, such as on your commute.
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