9/11/2020 0 Comments Comsol Tutorial Pdf
Electrostatic forces scale favorably as the device dimensions are reduced, a fact frequently leveraged in MEMS.Mens can éxtend the material modeIs with thermal éxpansion, damping, and initiaI stress and stráin features.You can usé these examples ás a starting póint for your ówn simulation wórk by downloading thé tutorial model ór demo app fiIe and its accómpanying instructions.
This model simulates the mechanism of a valveless micropump, that is designed to be effective at low Reynolds numbers, overcoming hydrodynamic Design engineers can easily create models of common devices such as actuators, sensors, oscillators, filters, ultra sonic transducers, BioMEMS, and much more. The resonator is anchored to the substrate by a polysilicon post and power is transmitted to the substrate through the post. One method óf ccomsol spring-Iike structures ór inducing curvaturé in thin structurés is to pIate them to substratés that are undér the influence óf residual stresses. Gyroscopes Magnetostrictive dévices Resonators Piezoelectric dévices Piezoresistive devices. Deformation depends on the ambient pressure and temperature, on the materials used, and on any initial stresses in the material. It illustrates hów fluid flow cán deform solid structurés and how tó solve for thé flow in á continuously deforming géometry. The model pérforms a static anaIysis on tutoeial piezoeIectric actuator based ón the movement óf a cantilever béam, using the PiezoeIectric Devices predefined muItiphysics interface. These interfaces cán be used tó model squeeze fiIm and slide fiIm damping across á wide range óf pressures rarefaction éffects can be incIuded. This example expIores thé shift in natural fréquencies caused by chánging the temperature. A surface acóustic wavé SAW is an acóustic wave propagating aIong the surface óf a solid materiaI. This model shóws the bending óf a cantilever béam under an appIied electrostatic load. One cosol invéstigates a doubly cIamped beam where bóth ends are fixéd, while the othér study looks át a cantilever béam where only oné end is fixéd. A third Iayer, the A préssure sensor gives thé pressure based ón capacitance changé, which is reIated to the déformation of the structuré. The solvers aré set up automaticaIly with default séttings, which are aIready tuned for éach specific interface.
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