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Purpose
Support function for piezoelectric demos
Syntax
sdtweb('_taglist','d_piezo') % display contents
Accepted commands are
These commands group sample scripts. Use d_piezo to display tag list and see available contents.
Meshing utilities for the placement of piezoelectric patches on a supporting structure (flat plate for now).
The options are specified in a structure with fields
The laminate specification string is composed of the following
The geometry/position specification string Geo can be
% Start by defining properties of the underlying laminate mdl=struct('Node',[],'Elt',[], ... % empty model 'pl', ... % composite layer property [1 fe_mat('m_elastic','SI',1) 42.5e9 .042 1490 3.35e9 .01], ... 'il', ... % laminate definition (6 layers at 0,90,0,90,0,90) p_shell(['dbval 1 laminate 1 2.167e-4 0 1 2.167e-4 90 ' ... '1 2.167e-4 0 1 2.167e-4 90 1 2.167e-4 0 1 2.167e-4 90']), ... 'unit','SI'); RG=struct; RG.list={'Name','Lam','shape' 'Main_plate', mdl,'global lx=.4 ly=.3 lc=.02' 'Act1','BaseId1 +SmartM.MFC-P1.2814 -SmartM.MFC-P1.2814.in','xc=.35 yc=.25 ang=30' 'Sen2','BaseId1 +SmartM.MFC-P1.2814','xc=.03 yc=.05 ang=30' 'Sen3','BaseId1 +Noliac.NCE51.OD25TH1','xc=.05 yc=.25' }; cf=feplot;d_piezo('MeshPlate',RG);cf.mdl.name='Plate with piezo'; p_piezo('electrodeinfo',cf.mdl.GetData) matgui('jil',cf);matgui('jpl',cf); % Display properties
The following illustrates transient simulation to a load on a specific piezo
model=cf.mdl.GetData; model=p_piezo('electrode2case',model); opt=fe_time('TimeOpt Newmark .25 .5 0 .3e-6 200'); opt.AssembleCall='assemble -fetime Load'; %opt.FinalCleanupFcn='out.DOF=model.DOF; %out.def=[Case.T*out.def+Case.TIn*[0 ft(1:end-1)'']];'; model=stack_set(model,'info','Rayleigh',[0 2*.0025/200e3]); def=fe_time(opt,cf.mdl);def.name=model.name; cf.def=def; fecom('colordataevalRadZ-edgealpha0');fecom('scc1e-10');
Patch Simple volume patch.
Plate Generic script for arbitrary placement of patches on a flat plate. A list of shapes can be given as a cell array. This is considered as a demo since it currently only supports a rectangular base plate.
GammaS build a weighting for surface control.
-19.4mm21mm24.2mm [RO][RO]10mm