A Simple Method to Design and Analyze Dynamic Vibration Absorber of Pipeline Structure Using Dimensional Analysis

Table 5

Comparison of amplitude ratio results vs. experimental results.

No.	NPS pipe (inch)	Excited frequency (Hz)		Size pitch	M absorber (kg)		L absorber (m)
1	1	9	0.74527	M8	2.35		0.234
2	1	9.5	0.94950	M6	0.8		0.185
3	1	10	0.68628	M8	1.7		0.238
4	1	11	0.49483	M8	2.35		0.18
5	2	10	0.79916	M16	10		0.342
6	2	14	0.64739	M10	10		0.138
7	2	16.9	0.59943	M8	4		0.116
8	2	17.5	0.71376	M6	10		0.078
9	3	21	0.51961	M16	14.3		0.176
10	3	22	0.49901	M16	10		0.19
11	3	23.7	0.89811	M8	2.35		0.111
12	3	25	0.95663	M10	2.35		0.157
No.
1	0.31002	0.07717	1.15798	0.82381	0.42594	0.00328	0.12162	0.680855
2	0.10554	0.06101	0.97971	1.02781	0.22570	0.00086	0.06223	0.944129
3	0.22427	0.07849	1.12251	0.94427	0.40482	0.00328	0.12162	0.634933
4	0.31002	0.05936	0.95485	1.22108	0.93580	0.00328	0.12162	0.446833
5	0.59547	0.11078	1.02535	0.57274	0.39594	0.00904	0.25600	0.871955
6	0.59546	0.04470	1.09709	0.80623	0.78467	0.00117	0.09237	0.593110
7	0.23819	0.03757	0.99016	1.00228	0.48506	0.00043	0.05597	0.649526
8	0.59547	0.02526	1.74684	0.58829	0.41778	0.00011	0.02864	0.649377
9	0.55644	0.05677	0.95058	0.86966	0.85220	0.00262	0.16781	0.477241
10	0.38912	0.06129	0.93408	0.92716	0.67736	0.00262	0.16781	0.499099
11	0.09144	0.03580	0.99625	0.93648	0.16239	0.00015	0.03669	0.98380
12	0.09144	0.05064	1.07115	0.91873	0.15631	0.00034	0.06055	0.862021