Performance simulation and parameter analysis of viscous fluid damper based on orthogonal design

Table 1. Value of fixed factors
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Table 1. Value of fixed factors
固定因素固定取值
缸筒长度L/mm 147
活塞杆直径D₂/mm 56
缸壁与活塞间隙H/mm 0.5
开孔位置距中心轴高度h/mm 45

Table 2. Value range of influence factors
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Table 2. Value range of influence factors
影响因素取值
开孔半径r₀/mm 1, 1.5, 2, 2.5
开孔长度l/mm 60, 62, 64, 66
开孔个数n/个 1, 2, 3, 4
活塞直径D₁/mm 124, 128, 132, 136

Table 3. Schemes of orthogonal design

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Table 3. Schemes of orthogonal design

方案	影响因素				空列
方案	r₀/mm	l/mm	n/个	D₁/mm	空列
1	1	60	1	124	1
2	1	62	2	128	2
3	1	64	3	132	3
4	1	66	4	136	4
5	1.5	60	2	132	4
6	1.5	62	1	136	3
7	1.5	64	4	124	2
8	1.5	66	3	128	1
9	2	60	3	136	2
10	2	62	4	132	1
11	2	64	1	128	4
12	2	66	2	124	3
13	2.5	60	4	128	3
14	2.5	62	3	124	4
15	2.5	64	2	136	1
16	2.5	66	1	132	2

Table 4. Grid independence test
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Table 4. Grid independence test
网格数压差阻力/kN
1 396 233 87.13
1 944 179 88.57
2 091 891 89.13
4 499 032 88.16

Table 5. Simulation and theoretical calculation results of orthogonal design

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Table 5. Simulation and theoretical calculation results of orthogonal design

方案	仿真结果		理论结果
方案	阻尼系数C/(kN∙v^−α)	速度指数α	阻尼系数C/(kN·v^−α)	速度指数α
1	27.72	0.302	35.75	0.275
2	28.38	0.323	37.07	0.275
3	31.72	0.299	39.21	0.275
4	32.87	0.325	41.89	0.275
5	19.25	0.345	21.69	0.275
6	22.60	0.373	29.34	0.275
7	14.22	0.297	15.78	0.275
8	15.92	0.351	19.46	0.275
9	12.28	0.280	12.72	0.275
10	11.17	0.262	11.06	0.275
11	13.56	0.325	15.19	0.275
12	10.80	0.320	11.71	0.275
13	6.61	0.258	6.45	0.275
14	6.80	0.255	6.53	0.275
15	10.06	0.276	10.10	0.275
16	11.46	0.277	11.51	0.275

Table 6. Visual analysis with the damping coefficient as the evaluation index C

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Table 6. Visual analysis with the damping coefficient as the evaluation index C

影响因素	r₀/mm	l/mm	n/个	D₁/mm	空列
K1	120.69	65.86	75.34	59.54	64.87
K2	71.99	68.95	68.49	64.47	66.34
K3	47.81	69.56	66.72	73.60	71.73
K4	34.93	71.05	64.87	77.81	72.48
$ \overline{{K}_{{1}}} $	30.17	16.47	18.84	14.89	16.22
$ \overline{{K}_{{2}}} $	18.00	17.24	17.12	16.12	16.59
$ \overline{{K}_{{3}}} $	11.95	17.39	16.68	18.40	17.93
$ \overline{{K}_{{4}}} $	8.73	17.76	16.22	19.45	18.12
极差R	21.44	1.30	2.62	4.57	1.90
排秩	1	5	3	2	4
因素主次	r0> D1>n>l

Table 7. Visual analysis with the velocity index as the evaluation index α

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Table 7. Visual analysis with the velocity index as the evaluation index α

影响因素	r₀/mm	l/mm	n/个	D₁/mm	空列
K1	1.249	1.185	1.277	1.174	1.191
K2	1.366	1.213	1.264	1.257	1.177
K3	1.187	1.197	1.185	1.183	1.250
K4	1.066	1.273	1.142	1.254	1.250
$ \overline{{K}_{{1}}} $	0.312	0.296	0.319	0.294	0.298
$ \overline{{K}_{{2}}} $	0.342	0.303	0.316	0.314	0.294
$ \overline{{K}_{{3}}} $	0.297	0.299	0.296	0.296	0.313
$ \overline{{K}_{{4}}} $	0.267	0.318	0.286	0.314	0.313
极差R	0.075	0.022	0.034	0.021	0.018
排秩	1	3	2	4	5
因素主次	r0>n>l>D1

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Yong WU, Yousong GUO, Ming HONG. Performance simulation and parameter analysis of viscous fluid damper based on orthogonal design[J]. Chinese Journal of Ship Research, 2021, 16(3): 164

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