General Design Principles for DuPont Engineering Polymers - Module
General Design Principles for DuPont Engineering Polymers - Module
General Design Principles for DuPont Engineering Polymers - Module
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Figure 4.11 Stress curves<br />
The computer programmed curves in the graph below,<br />
plotted <strong>for</strong> rib thickness equal to 60 percent of wall<br />
thickness, are presented as an aid in calculating the<br />
maximum stress tolerance of a ribbed structure.<br />
Wall thickness ratio<br />
Ws<br />
W<br />
10<br />
9<br />
8<br />
7<br />
6<br />
5<br />
4<br />
3<br />
2<br />
1<br />
0<br />
0<br />
1 2 3 4 5 6 7 8 9 10<br />
H<br />
Height of rib ratio<br />
W<br />
1°<br />
d 0.03R H<br />
B<br />
B<br />
31<br />
0.6 W<br />
R<br />
W<br />
WD<br />
0.62<br />
1.0<br />
1.25<br />
1.87<br />
2.5<br />
Base width<br />
3.75<br />
5.0<br />
6.25<br />
7.5<br />
10.0<br />
12.5<br />
15.0<br />
20.0 25.0<br />
37<br />
50.0<br />
75.0<br />
150.0<br />
BEQ<br />
W
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