Contact Problem for an Elastic Layer on an Elastic Half Plane Loaded by Means of Three Rigid Flat Punches

Table 1

Variation of minimum value of distance between two punches (𝑏−𝑎)/ℎ to avoid separation under first punch with 𝑎/ℎ and (𝑐−𝑏)/ℎ for various values of 𝑄/𝑃 (𝜇₂/𝜇₁=6.48).

(𝑐−𝑏)/ℎ	𝑎/ℎ	(𝑏−𝑎)/ℎ
		2𝑃	4𝑃	6𝑃	8𝑃	10𝑃	12𝑃
0.25	0.5	0.2773	0.5465	0.7263	0.8564	0.9569	1.0383
	0.75	0.4645	0.7676	0.9485	1.075	1.1716	1.250
	1.0	0.603	0.9107	1.089	1.2138	1.3105	1.3893
0.5	0.5	0.185	0.4403	0.617	0.7466	0.8474	0.9291
	0.75	0.3617	0.6597	0.8405	0.9675	1.065	1.144
	1.0	0.4983	0.8035	0.983	1.1086	1.206	1.2856
0.75	0.5	0.108	0.3432	0.516	0.645	0.746	0.8285
	0.75	0.2715	0.5613	0.742	0.8699	0.9685	1.0485
	1.0	0.4045	0.7073	0.8875	1.015	1.1134	1.4445
1.0	0.5	0.0357	0.2504	0.4195	0.548	0.6497	0.7332
	0.75	0.191	0.4694	0.6502	0.7797	0.8798	0.9613
	1.0	0.320	0.6188	0.8005	0.930	1.030	1.1123