function?[?CatchAline?]?=?RunElastic2D_lambwave（?input_args?）
%?SoundSim?-?2D?Elastic?Simulation?-?For?Academic?Use?Only
%?-------------------------------------------------------------------------------------
%?Limited?Feature?Beta?Release?of?a?SoundSim?（www.SoundSim.com）
%?Please?Send?all?Questions?Suggestions?and?Comments?to?kevinrudd@SoundSim.com
%?-------------------------------------------------------------------------------------
%?Lamb?Wave?Example?（Guided?Elastic?Wave）-
%?An?5?cycle?0.68?MHz?excitation?on?a?3.2mm?thick?Aluminum?Plate.
%?As?the?guided?waves?propagate?down?the?plate?The?first?symmetric?（So）
%?and?anti-symmetric?Modes?（Ao）?separate?and?are?easily?distinguishable.
%
%
%?????????????????????????????????????????????????????????????????????????????????????????Aprox.?Material?Values?From
%????????????????????????????????????????????????????????????????????????????????Stress?Waves?in?Solids?（H.?Kolsky）?Dover?1963
%?Material?Properties???????????????????????????????????????????????????????????????????Aluminum??Steel??Copper??Glass
p.cl?=?6320;?????????????????????????%?Longitudinal?Wave?Speed?（m/s）?????????????????????6320??????5940???4560????5800
p.cs?=?3100;?????????????????????????%?Sheer?Wave?Speed?（m/s）????????????????????????????3100??????3220???2250????3350
p.den?=?2700;????????????????????????%?Material?density?（kg/m^3）?????????????????????????2700??????7800???8900????2500?
p.platethickness?=?0.0032;???????????%?plate?thickness?（meters）??（in?x2-direction）
p.platelength????=?0.30;?????????????%?plate?length?（meters）?????（in?x1-direction）

%?Driving?Transducer?Properties
%?--?These?parameters?adust?the?transducer?position?size?frequency?and?drive?function?length
%?--?of?the?driving?transducer.??The?transducer?is?on?the?top?of?the?plate.??
p.tpos?=?0.025;??????????????????????%?transducer?position??（meters）?-?from?left?side?of?the?plate
p.tthickness?=?0.001;????????????????%?transducer?diameter??（meters）?-?this?is?2D
p.tfreq?=?680000;????????????????????%?frequency?of?transducer?（Hertz）?
p.tpulselength?=?（5）*（1/（p.tfreq））;??%?transducer?pulse?length?（seconds）

%?Catch?Transducer?Properties
%?--?These?parameters?adjust?the?catch?transducer?location?and?size.??Again?this?transducer?is?
%?--?can?only?be?placed?on?the?top?of?the?plate
p.catchtpos?=?0.25;??????????????????%?catch?transducer?position??（meters）?-?from?left?side?of?the?plate
p.catchtthickness?=?0.001;???????????%?catch?transducer?diameter??（meters）?-?this?is?2D

%?Other?Params
p.abc?=?40;??????????????????????????%?thickness?of?absorbing?boundary?layer?（in?simulation?units?ds）?Only?on?left?and?right
p.plotevery?=?3;?????????????????????%?update?the?plot?every??timesteps
p.SimulationTime?=.00012;????????????%?siulation?runtime?（seconds）

p.plotmode?=?‘x2_velocity‘;??????????%?plot?mode?（‘abs_velocity‘?=?absolute?velocity）;
?????????????????????????????????????%???????????（‘x1_velocity‘??=?velocity?in?the?x1?position?（left?and?right））
?????????????????

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????3164??2006-07-31?16:20??RunElastic2D_lambwave.m
?????文件????????3230??2006-07-31?16:21??RunElastic2D_steelblock.m
?????文件??????136491??2006-07-31?16:19??SoundSim_2DElastic_Readme.pdf
?????文件???????13287??2006-07-31?16:19??SoundSim_ElasticEngine2D.p