A Novel Sensitivity Analysis Method in Structural Performance of Hydraulic Press

Table 7

Modal analysis results of the column.

Six factors and five levels	𝑋1	𝑋2	𝑋3	𝑋4	𝑋5	𝑋6	𝑌
	The top to the first rib plates	The first to the second rib plates	The remaining distance between rib plates	The roof column width	The column; plates thickness	The rib plates thickness	Natural frequency
1	800	800	925	1050	135	45	17.953
2	900	800	1150	1100	150	55	18.016
3	1000	800	1075	900	143	40	18.063
4	1100	800	850	1000	120	50	17.906
5	1200	800	1000	950	127	60	17.859
6	800	900	1000	1000	143	55	17.965
7	900	900	925	950	120	40	17.903
8	1000	900	1150	1050	127	50	17.960
9	1100	900	1075	1100	135	60	17.921
10	1200	900	850	900	150	45	18.072
11	800	1000	850	1100	127	40	17.773
12	900	1000	1000	900	135	50	17.779
13	1000	1000	925	1000	150	60	17.842
14	1100	1000	1150	950	143	45	17.859
15	1200	1000	1075	1050	120	55	17.799
16	800	1100	1075	950	150	50	17.768
17	900	1100	850	1050	143	60	17.778
18	1000	1100	1000	1100	120	45	17.772
19	1100	1100	925	900	127	55	17.785
20	1200	1100	1150	1000	135	40	16.739
21	800	1200	1150	900	120	60	17.656
22	900	1200	1075	1000	127	45	17.833
23	1000	1200	850	950	135	55	17.766
24	1100	1200	1000	1050	143	40	17.941
25	1200	1200	925	1100	150	50	17.937