Biomedical Engineering Reference
In-Depth Information
FIGURE 3-58
Relationship
between force and
length for a 210 mm
long, 20 mm
diameter PAM at
constant pressure.
Data for a number of different PAMS manufactured by the Shadow Robot Company
are summarized in Table 3-7 in terms of the percentage change in their lengths for various
force and pressure combinations.
TABLE 3-7
Relationship Among Load, Pressure, and Percentage Decrease in
Length for Various PAMs
6 mm PAM
Load (kg)
Pressure (bar)
0.5
1
2
3.2
4.6
0
n/a
3%
2%
2%
1%
2
12%
10%
7%
5%
3%
4
20%
28%
17%
11%
20 mm PAM
Load (kg)
Pressure (bar)
0.5
5
10
15
20
25
0
n/a
8%
6%
2%
1%
0%
2
35%
29%
23%
17%
12%
10%
4
33%
29%
25%
23%
20%
30 mm PAM
Load (kg)
Pressure (bar)
0.5
10
20
35
50
70
0
n/a
2%
1%
0%
0%
0%
2
35%
33%
30%
27%
24%
21%
4
35%
33%
31%
29%
27%
Source:
Courtesy Shadow Robot Company, http://www.shadowrobot.com/, with permission.
