Application of Grey Relational Analysis and Multiple Linear Regression to Establish the Cutting Force Model of Oil Peony Stalk

Table 1

Mechanical property parameters of oil peony stalk.

No.	Cutting force/N	Diameter/mm	Internode distance/mm	Fresh weight/g	Dry weight/g	Relative moisture content/%	Volume/cm^3	Fresh density/g·cm^−3	Dry density/g·cm^−3
1	53.020	4.150	74.100	0.640	0.370	42.188	1.002	0.639	0.309
2	82.125	4.880	91.140	1.290	0.650	49.612	1.705	0.757	0.381
3	79.659	4.945	96.870	1.285	0.610	52.529	1.864	0.695	0.332
4	68.815	4.765	89.945	1.090	0.540	50.459	1.684	0.679	0.336
5	72.138	4.605	105.160	1.065	0.585	45.070	1.737	0.611	0.336
6	61.920	4.170	77.650	0.810	0.400	50.617	1.060	0.764	0.377
7	59.928	4.140	86.150	0.920	0.430	53.261	1.160	0.793	0.371
8	77.852	4.820	92.880	0.860	0.510	40.698	1.695	0.507	0.301
9	83.816	4.470	131.250	1.280	0.640	50.000	2.060	0.621	0.311
10	88.841	4.020	102.800	0.840	0.400	52.381	1.305	0.644	0.307
11	52.331	3.530	78.440	0.530	0.280	47.170	0.768	0.690	0.365
12	91.98	5.030	111.200	1.810	0.850	53.039	2.210	0.819	0.385
13	71.83	4.390	117.440	1.270	0.660	48.031	1.778	0.714	0.371
14	56.83	4.310	76.250	0.850	0.480	43.529	1.112	0.764	0.611
15	97.316	4.890	141.690	1.460	0.730	50.000	2.661	0.549	0.274
Average	73.227	4.474	98.198	1.067	0.542	48.572	1.587	0.683	0.358