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Structural Mechanics
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Piezo-Acoustic Transducer
People that use piezoelectric transducers are interested in phased-array microphone, ultrasound equipment, ink-jet drop actuators, drug discovery, Sonar transducers, bio-imaging and acousto-bio-theraputics. Basically anyone who is trying to create sound in air or liquids turns to a version of this p...
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Fluid-Structure Interaction with Two Fluid Phases
The following example demonstrates techniques for modeling a fluid-structure interaction containing two fluid phases in COMSOL Multiphysics. It illustrates how a heavier fluid can induce movement in an obstacle using the arbitrary Lagrangian-Eulerian (ALE) technique along with the Two-Phase Flow, Ph...
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Acoustic Transmission Loss through Periodic Elastic Structures
In this model, two fluids are separated by a solid elastic structure. An acoustic pressure wave impacts the structure resulting in a reflected wave and a wave transmitted with a loss through the structure. This model investigates the transmission loss through the structure. The effects of incident a...
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Diesel Engine Piston
In this model, a diesel engine piston is studied at steady-state conditions, that is, at a continuous engine speed and load.
The combustion process at steady-state produces cyclic pressure loads and a high constant temperatures. These load conditions could yield a piston failure due to fatigue crac...
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Structural and Fatigue Analysis of a Car Wheel Rim
This example shows two structural analyses of a car wheel rim.
Firstly, the parametric solver is used to simulate a varying load along the boundary of the rim. The model solves for both the anti-symmetric and symmetric load cases. The two solutions are then combined in MATLAB in order to retrieve...
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Fluid-Structure Interaction in Aluminum Extrusion
In massive forming processes like rolling or extrusion, metal alloys are deformed in a hot solid state with material flowing under ideally plastic conditions. Such processes can be simulated effectively using computational fluid dynamics, where the material is considered as a fluid with a very high...
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Sheet Metal Forming by a Spherical Punch
A common sheet metal forming process is where a punch is used to deform a plate clamped between two jaws.
This axi-symmetric contact model simulates the deformation of an elasto-plastic circular plate being bent by a spherical punch.
The force necessary to deform the plate and the shape of th...
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Structural Analysis of an Elbow Bracket
This model performs a structural analysis of an elbow bracket of steel fixed at one end. The component is part of a support mechanism and is subjected to both mechanical loads and thermal loads.
This tutorial model takes you through the steps to carry out a detailed analysis of the part using the...
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Stresses in the Soil Surrounding a Traffic Tunnel
Problems of material failure in soil mechanics and other frictional materials such as concrete are often modeled using the well-known Mohr-Coulomb law. This is an elastic perfectly-plastic material model.
A smooth approximation of the Mohr-Coulomb yield surface for a three-dimensional case is th...
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Structural and Fatigue Analyses of a Shaft with a Fillet
This benchmark model shows how to perform a high-cycle fatigue analysis for nonproportional loading using critical planes.
Two time-dependent loads are applied to the small end of a shaft: a transverse force, causing bending, and a twisting moment.
In this model, a shaft with a fillet is expos...
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