Page 152 - 《应用声学》2024年第6期

1328 2024 年 11 月

኎ϙ᭧ ঴ܦԍ(Pa) mm
10 mm A -5 5 10
5 Pa 0
0 -5 11.78 mm 5 30
11.8
(Freq(30)=129.5 kHz) 20 mm -1.08 Ք 20 mm 5 -5 ѭ᭧ ঴ܦԍ(Pa) 30 Pa 20
30
A

8.57
mm
᜽
5.35
10
0
5
ڏ
2.14
10
15
-7.51
z 0 -4.3 10 20 10
y x 10 -10.73 0 5
0 5 -13.94 (Freq(30)=129.5 kHz) mm
-5 mm -13.9 0
(a) ܦԍ኎ϙ᭧ 10 -5

᛫᭧ ঴ܦԍ(Pa) -10
-15
30 Pa mm z
20 mm 0 20 mm -5 0 5 10 10 x y 0 -20
20
(Freq(30)=129.5 kHz) 0 10 mm 10 Ք 0 Pa (c) ܦԍ̈ڏ
10
15

B
᜽
5
ڏ
0
-5
B
-15
z -10 -10
y x 5 10 -10 ԍႃಏᰴएܙҫ0.08 mm
-5 0 mm -20
(b) ᰴए᛫᣺र
图 4 某一压电柱增高 0.08 mm 的声场
Fig. 4 Sound field with a piezoelectric column raised by 0.08 mm
኎ϙ᭧ ঴ܦԍ(Pa)
10 A mm
5 mm 30 Pa mm 5 -5 0 5 10 30
0
13.8
(Freq(30)=129.5 kHz) 10 mm 10.68 Ք 20 mm -5 ѭ᭧ ঴ܦԍ(Pa) Pa 20
-5
13.75
A
7.62
20
4.55
᜽
1.49
ڏ
mm
10
0
5
-1.58
-7.71
0 -4.64 10 mm 5 30 15
-10.77
z z 10
y x 10 -13.83 y
5
0 mm -13.8 x 0 20 5
-5 (Freq(30)=129.5 kHz)
(a) ܦԍ኎ϙ᭧ mm 0

᛫᭧ ঴ܦԍ(Pa) ᛫᭧ ঴ܦԍ(Pa) -5
30 Pa mm 10
20 mm 0 20 mm -5 0 5 10 -10
20
(Freq(30)=129.5 kHz) 0 10 mm -5 B 10 Pa x z y (c) ܦԍ̈ڏ 0 -20
10
15
-15
10
Ք
5
᜽
ڏ
0
0
B -10 -10
-15
z ԍႃಏࠕएܙҫ0.08 mm
y
x 10 -10
5 -20
0 mm
-5
(b) ᰴए᛫᣺र
图 5 某一压电柱增宽 0.08 mm 的声场
Fig. 5 Sound field with a piezoelectric column widened by 0.08 mm