COMSOL Day: Structures & Vibrations
Computational methods for simulating structural mechanics have a rich history. Everything from material models and constitutive relations to specialized elements and solvers have been studied and developed for decades. As one of the first general-purpose physics platforms, COMSOL Multiphysics® incorporates structural mechanics into the broader context of multiphysics through the Structural Mechanics and Acoustics modules and associated add-on products.
This COMSOL Day will focus on structures and vibrations. Both current users and those new to COMSOL Multiphysics® will gain insight into these applications by attending technical presentations and software demonstrations by COMSOL developers and application engineers. Attendees will also have the opportunity to ask questions and get feedback from COMSOL staff throughout the day. Join us!
Please join us before the first presentation starts to settle in and make sure that your audio and visual capabilities are working.
COMSOL Multiphysics® version 6.0 includes several important updates pertaining to structures and vibrations. These features are primarily contained in our Structural Mechanics, MEMS, and Acoustics modules. This session will provide an overview of these features within the broader COMSOL Multiphysics® platform. Here are some highlights:
- Magnetomechanics multiphysics interface
- Nonlocal plasticity
- Reduced integration
- Crack closure
- And more!
The vibration characteristics of machinery with rotating parts differs significantly from the characteristics of a nonrotating system. The dynamic properties of rotating components depend on their spin speed as an effect of frame acceleration. Rotordynamics simulations provide an efficient way of accounting for these effects and for designing efficient and reliable equipment. In this presentation, we will talk about how to set up different analysis types for rotordynamics simulations in COMSOL Multiphysics®. Bearing simulations will be covered, as well as analysis of systems containing rotors, bearings, and housing.
In this session, we will demonstrate how to model layered composite structures. Common examples of composite materials include fiber-reinforced plastic, laminated plates, and sandwich panels — all of which are widely used in the manufacturing of aircraft and spacecraft components, wind turbine blades, and other structures. We will cover two approaches to accurately model composite shells: layerwise theory and equivalent single layer theory. In addition to standard structural analyses, the presentation will go over micromechanical, first-ply failure, delamination, damage, and linear buckling analyses. We will also show how to include other physical phenomena in a composite laminate model, such as heat transfer, electromagnetics, acoustics, and fluid flow as well as various nonlinear materials models, such as hyperelasticity, plasticity, and piezoelectricity.
Elastic wave propagation is a common part of a wide range of problems, from seismic waves caused by earthquakes to ultrasonic nondestructive testing of solids. In this session, we will talk about the time-domain modeling of waves propagating through coupled elastic-acoustic media using the time-explicit nodal discontinuous Galerkin method (dG-FEM). We will discuss the distinctive features of the method with respect to discretization, mesh, and solvers. You will get an overview of the physics interfaces based on dG-FEM and learn where and how they can be efficiently used.
COMSOL provides several advanced features for modeling structural dynamics. In this session, you will get an overview of some of these features. The first topic will be the new framework for component mode synthesis (CMS). With CMS, linear components can be reduced to low-order models. Such reduced components are computationally very efficient and can be used together with linear or nonlinear FE models in both static and dynamic analyses. You will also see how to perform a random vibration analysis, together with the new functionality for fatigue evaluation of such results. Both the CMS and the random vibration functionalities are based on the general reduced order model framework, which also will be described.
Learn the fundamental workflow of COMSOL Multiphysics®. This introductory demonstration will show you all of the key modeling steps, including geometry creation, setting up physics, meshing, solving, and postprocessing.
In this session, we will discuss strategies for preparing CAD designs for simulation with COMSOL Multiphysics®. Defeaturing and simplifying the geometry and carefully designing the mesh allows you to focus on the important features for the physics while keeping the solution time and memory requirements within reasonable limits. We will present and demonstrate functionality for finding and deleting small geometric entities, finding and resolving gaps and overlaps between objects, fine-tuning the mesh element size, and generating structured meshes.
Learn about the Acoustics Module and how you can use it to solve vibroacoustics problems involving sound radiation from vibrating structures to the surrounding fluids. Moreover, you can also simulate the complementary effect of the acoustic load on structure movements. In this session, we will present different numerical schemes available for modeling acoustic–structure interactions at small and large scales. Use cases include nondestructive testing, speakers, microphones, and sonar.
This session will provide an overview of various features available for fluid–structure interaction (FSI) in COMSOL Multiphysics®. We will demonstrate model examples with one-way coupling as well as two-way coupling for steady-state and time-dependent FSI simulations. In addition, we will cover other related capabilities such as handling of moving meshes, combining FSI simulations with heat transfer, two-phase flow, and more.
A transducer is an electronic device that converts energy from one form to another. In this session, we will learn the basics of modeling piezoelectric materials in COMSOL Multiphysics® and how they can be used to model piezoelectric transducers. These devices are useful for applications requiring the generation of sound in air and liquids. Examples of such applications include phased array microphones, ultrasound equipment, inkjet droplet actuators, drug discovery, sonar transducers, bioimaging, and acousto-biotherapeutics. We will also discuss how to include magneto-mechanical coupling for modeling magnetostrictive transducers in COMSOL Multiphysics®, which is widely adapted for applications in sonar, acoustic devices, active vibration control, position control, and fuel injection systems.
Vice President of Sales
Marketing and Events Director
Technology Director, Structural Mechanics
Senior Developer, Acoustics
Technology Director, External Interfaces
Technical Product Manager, Rotordynamics
Technical Product Manager
Lead Applications Engineer
Senior Applications Engineer
Senior Applications Engineer
Senior Applications Engineer
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