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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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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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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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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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Contact Analysis of a Snap Hook Fastener
Snap hook fasteners, where a hook is inserted into a groove, are common in the automotive industry, for example in the control panel of a car.
To obtain the magnitude of the forces necessary to insert and remove the hook, this model solves a nonlinear structural mechanics problem involving large...
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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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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 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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Structural Integrity of a Hip Replacement
The most common reason that people have hip-replacement surgery is due to the wearing down of the hip joint that results from osteoarthritis. Other conditions, such as rheumatoid arthritis (a chronic inflammatory disease that causes joint pain, stiffness, and swelling), avascular necrosis (loss of b...
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