TY - JOUR ID - 1461 TI - USING ALE-FEM TO SIMULATE THE INSTABILITY OF BEAM-TYPE NANO-ACTUATOR IN THE PRESENCE OF ELECTROSTATIC FIELD AND DISPERSION FORCES JO - Iranian Journal of Science and Technology Transactions of Mechanical Engineering JA - IJSTM LA - en SN - 2228-6187 Y1 - 2013 PY - 2013 VL - 37 IS - 1 SP - 1 EP - 9 KW - Cantilever nano-actuator KW - arbitrary Lagrangian-Eulerian finite element method (ALE-FEM) KW - pull-in instability KW - Casimir force KW - van der Waals force KW - electrostatic force DO - 10.22099/ijstm.2013.1461 N2 - Abstract– The ability of mesh design in arbitrary Lagrangian-Eulerian finite element method(ALE-FEM) makes it a generally efficient device for simulating engineering problems. In thispaper, ALE-FEM is used to model the static deflection and instability of beam-type cantilevernano-actuators using plain element. Effects of electrostatic fields are taken into account throughfirst-order fringing field corrected model. In addition, the influence of quantum vacuumfluctuations is considered via attractive Casimir and van der Waals force depending on the rangeof application. The instability parameters, i.e. pull-in voltage and deflection of the nano-actuatorare computed. The obtained results are compared with those reported in literature using numericalmethod as well as Lagrangian FEM. The findings indicate that ALE method can be used as apowerful technique for modeling beam type nano-actuator. UR - https://ijstm.shirazu.ac.ir/article_1461.html L1 - https://ijstm.shirazu.ac.ir/article_1461_4b333a6d267c7d773744f1c737cab548.pdf ER -