Effects of Hole Perpendicularity Error on Mechanical Performance of Single-Lap Double-Bolt Composite Joints

Table 6

The stiffness and ultimate load of FEA results.

Group	Stiffness/N/mm	Decline/%	Ultimate load/N	Decline/%
P0	26515	—	35901	—
P1-1	26325	0.72	35552	0.97
P1-2	26061	1.71	35336	1.58
P1-3	25751	2.88	34901	2.79
P1-4	25187	5.01	33394	6.98
P2-1	25154	5.13	35077	2.30
P2-2	23389	11.79	35052	2.36
P2-3	21805	17.76	34419	4.13
P2-4	21482	18.98	33302	7.24
P3-1	25327	4.48	35506	1.10
P3-2	23453	11.55	35353	1.53
P3-3	22015	16.97	34088	4.28
P3-4	22005	17.01	33182	7.57
P4-1	25090	5.4	35558	0.96
P4-2	20203	23.8	35429	1.31
P4-3	16926	36.2	34675	3.41
P4-4	15501	41.5	33441	6.85
P5-1	26161	1.3	35388	1.43
P5-2	23667	10.7	35453	1.25
P5-3	23185	12.5	35013	2.47
P5-4	21140	20.3	32830	8.55