作者g96117XX (Jane)
看板Physics
標題[題目] 智慧型材料
時間Thu Apr 17 23:38:52 2008
[領域] 碩一材料
[來源] 大葉的機械碩專班-智慧型材料習題(朋友分享)
[題目]
Example 1:
Assume the piezoceramic sensor BM400 Type I dimensions W=12.7mm, L=38.1mm,
T=0.5mm). The catalog parameters are g31=-10.5E-3 (Vm/N), E=8E10 (N/m^2) and
c=11.95E-9 [F/m]
Calculate : (a) the capacitance C, (b) the piezoelectric coefficient d31 and
(c) the voltage V when the sensor is subject to a 10^-6 [m] axial
deflection.
Example 2 : Accelerometer Transducer
Given data : m=10^-3 kg, b=0, k=7.74*10^10 N/m, cWLg33E=1.16*10^-2 C/m,
Rc=10^10Ω and Cc=10^3 pF, calculate
(1) the steady-state voltage v response to an acceleration step input of
magnitude a=2 [m/s^2];
(2) the time constant.
[瓶頸] 講義上只供這個公式: V=g31*σ1*T = g31*E*T*(△L/L)
不知從何解題。
幫朋友po的，以上麻煩版友們幫忙解題，萬分感謝!
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 218.163.100.167