Spatial Transverse Vibration Simulation Model of Axially Moving Sucker Rod String under the Excitation of Curved Borehole

Table 4

Statistical table of rod-tube contact force characteristic values of specific nodes in one cycle.

Node type	Position (m)	Model	Average contact force (N/m)	Time of max contact force (s)	The max contact force (N/m)	Standard deviation of difference with model 1 (N/m)
Coupling node	531	Model 1	459.97	0.879	826.0
		Model 2	455.65	0.750	813.2	51.80
		Model 3	195.99	1.022	339.0	131.50
	1080	Model 1	221.40	1.290	575.8
		Model 2	199.49	1.283	560.1	103.55
		Model 3	119.69	1.152	202.8	105.75
Rod node	500	Model 1	0.13	9.625	38.7
		Model 2	0.51	0.136	37.4	3.54
		Model 3	34.50	0.757	54.0	13.09
	1283	Model 1	15.48	8.236	138.0
		Model 2	12.38	7.250	205.4	18.96
		Model 3	7.25	0.170	27.9	21.84