Competitive Failure of Loosening and Fatigue of Bolts under Composite Excitation

Table 4

Analysis results for bolt competitive failure modes.

Transverse displacement amplitude (mm)	Axial load amplitude (kN)	ξ (mm/kN)	Failure mode
—	—	>0.1	Loosening
0.6	6	0.1	Loosening
0.6	6	0.1	Loosening
0.6	6	0.1	Loosening
0.7	8	0.0875	Loosening
0.7	8	0.0875	Loosening
0.7	8	0.0875	Loosening
1	12	0.0833	Loosening
1	12	0.0833	Loosening
0.5	6	0.0833	Loosening
0.8	10	0.08	Loosening
0.8	10	0.08	Loosening
0.8	10	0.08	Loosening
0.7	9	0.0778	Loosening
0.7	9	0.0778	Loosening
0.7	9	0.0778	Loosening
0.6	8	0.075	Fatigue
0.6	8	0.075	Critical
0.6	8	0.075	Loosening
0.8	12	0.0667	Fatigue
0.8	12	0.0667	Fatigue
0.8	12	0.0667	Fatigue
0.9	14.4	0.0625	Fatigue
0.9	14.4	0.0625	Fatigue
0.9	14.4	0.0625	Fatigue
0.8	12.8	0.0625	Fatigue
0.8	12.8	0.0625	Fatigue
0.8	12.8	0.0625	Fatigue
0.7	11.2	0.0625	Fatigue
0.7	11.2	0.0625	Fatigue
0.7	11.2	0.0625	Fatigue
—	—	<0.0625	Fatigue