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Table 6. Optimization results.

From: Experimental Investigation and Optimization Design of Multi-Support Pipeline System

Variety

D1 (mm)

D3 (mm)

D4 (mm)

D5 (mm)

4th order frequency (Hz)

5th order frequency (Hz)

Maximum stress (MPa)

Maximum acceleration (g)

Initial

350.0

950.0

1250.0

1550.0

393.9

534.6

24.5

47.1

Optimal

429.3

1004.2

1357.0

1543.0

355.1

615.0

8.6

7.91