Variability of Dynamic Properties of Rubber Compounds for Elastomeric Bearings

Table 3

λ-factors for HDRs from experimental data, material test limits (bracketed), and annex J of [3].

		Experimental data and (EN 15129 §8.2.2.1)				EN 15129 annex J
		G		ξ		G	ξ
		LB	UB	LB	UB
Temperature	50°C	0.82 (0.80)	—	0.87 (0.80)	—	—	—
	40°C	0.88 (0.80)	—	0.91 (0.80)	—	—	—
	0°C	—	1.30	—	1.18	1.15	1.10
	−10°C	—	1.52 (1.80)	—	1.23 (1.8)	1.25	1.09
	−20°C	—	−(1.80)	—	1.26 (1.8)	—	—
	−30°C	—	−(1.80)	—	1.53 (1.80)	1.56	1.20
Ageing		1.00 (1.00)	1.18 (1.20)	1.00 (1.00)	0.86 (0.80)	1.20	1.00
Frequency		0.94 (0.80)	1.16 (1.20)	0.93 (0.80)	0.91 (0.80)	—	—
Repeated cycles		0.90 (0.80)	1.18 (1.35)	0.95 (0.80)	1.09 (1.00)	—	—
Production variability		0.95 (0.80)	1.07 (1.20)	1.00 (0.80)	1.00 (0.80)	—	—

Values calibrated from data and in compliance with EN 15129 prescriptions.