Various design charts of ample validity and prompt access are presented, which permit the contact stresses within the lug of a pinned connection to be forecast in the presence of an initial clearance between the pin periphery and the lug bore. To cover the range of the practically encountered geometries and loadings, round-ended lugs of various widths and with a variously tapered shank are considered, and several inclinations of the applied load are addressed. The charts are compiled with the aid of finite elements. The employment of the recently proposed load factor Φ allows the combined effects on the peak contact stresses of the load intensity and of the initial clearance to be predicted.
StrozziA.BaldiniA.NascimbeniM.Maximum equivalent stress in a pin-loaded lug subject to inclined loading. J. Strain Analysis, 2006, 41, 297–309.
2.
StrozziA.BaldiniA.GiacopiniM.RivasiS.RosiR.Maximum stresses in a taper-shanked round-ended lug loaded by an oblique concentrated force. Strain, 2007, 43, 109–118.
3.
AntoniN.GaisneF.Analytical modelling for static stress analysis of pin-loaded lugs with bush fitting. Appl. Math. Modelling, 2010, 35, 1–21.
4.
SundaramN.FarrisT. N.Mechanics of advancing pin-loaded contacts with friction. J. Mechanics and Physics of Solids, 2010, 58, 1819–1833.
5.
SundaramN.FarrisT. N.The generalized advancing conformal contact problem with friction, pin loads and remote loading – case of rigid pin. Int. J. Solids Structs, 2010, 47, 801–815.
6.
LinG.ZengY.XiaoB.Analysis and solution of pin connector stresses. Advd Mater. Res., 2011, 230–232, 435–439.
7.
JiangY.SheC.YuP.GuoW.Three-dimensional stress concentrations at circular pin holes in clearance-fit lugs. Fatigue and Fracture of Engng Mater. and Structs, 2011, preprint available.
8.
CiavarellaM.DecuzziP.The state of stress induced by the plane frictionless cylindrical contact. I. The case of elastic similarity. Int. J. Solids Structs, 2001, 38, 4507–4523.
9.
HouJ. P.HillsD. A.Contact between a pin and a plate with a hole under interference-fit and clearance-fit conditions. Proc. IMechE, Part C: J. Mechanical Engineering Science, 2001, 215(6), 629–639.
10.
WangG. S.Stress analysis for a lug under various experimental conditions. J. Strain Analysis, 1994, 29(1), 7–16.
11.
PioliA.StrozziA.BaldiniA.GiacopiniM.RosiR.Influence of the initial clearance on the peak stress in connecting-rod small ends. Proc. IMechE, Part D: J. Automobile Engineering, 2009, 223, 769–782.
12.
Stress concentration factors in axially loaded lugs with clearance-fit pins. ESDU Report 81006, London, 1981.
13.
MonnoG.PappalettereC.Numerical and experimental analysis of the hole–pin coupling. In Vth International Congress on Experimental mechanics, Montreal, Canada, 10–15 June 1984, pp. 723–728.
14.
DundursJ.StippesM.Role of elastic constants in certain contact problems. Trans. ASME, J. Appl. Mechanics, 1970, 37, 965–970.
15.
CiavarellaM.BaldiniA.BarberJ. R.StrozziA.Reduced dependence on loading parameters in almost conforming contacts. Int. J. Mech. Sci., 2006, 48, 917–925.
16.
CiavarellaM.StrozziA.BaldiniA.GiacopiniM.RivasiS.RosiR.On the applicability of the loading parameter Φ in pinned connections with relevant initial clearance. Appl. Mech. Mater., 2006, 5–6, 155–164, Trans Tech Publications, Switzerland, Full text available online at http://www.scientific.net.
17.
JohnsonK. L.Contact mechanics, 1985 (Cambridge University Press).
18.
SucharevI. P.Strength of machine hinged units (in Russian), 1977 (Mashinostroenie, Moscow).
19.
PerssonA.On the stress distribution of cylindrical elastic bodies in contact. Doctorate Thesis, Chalmers University, Gothenburg, Sweden, 1964.
20.
StrozziA.BaldiniA.GiacopiniM.RivasiS.RosiR.Fatigue stress cycles within a pin–lug connection subjected to variable loads (in Italian). In National Meeting on Design against fatigue in the presence of stress multiaxiality, Ferrara, Italy, 6–7 June 2005.
