Vol. 6 (11) pp. 1069-1079 DOI: 10.21474/IJAR01/8095

EXPERIMENTAL VERIFICATION OF STRESS CONCENTRATION FACTOR IN AN UNFLAWED LUG USING UNIFORM & GRADED MESH OF 2D LINEAR & NON-LINEAR ANALYSIS USING MSC.NASTRAN / MSC.PATRAN.

  • Assistant Professor, Department of Aerospace Engineering, IIAEM, Jain University, Bangalore-562112.
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Abstract

The objective of the current investigation is to study the variation of Stress Concentration Factor in an unflawed Lug Joint that finds application in linkage structures or to complete the structural assembly in an Aircraft, so that the loads can be transferred from one structural member to another. Because when the loads are transferred from one structural member to another due to the pressure distribution on the Aircraft because of the service load, the stress concentration becomes so high that at the edges of the hole, there is a possibility that can initiate a minute crack. Suppose in case, if the crack gets unnoticed during Maintenance checks, then due to the service loads, there is a chance of the occurrence of Structural failure due to crack propagation that could cause a catastrophe. Hence it becomes important to investigate the Lug joints for Stress Concentration Factor.

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References

  1. Strozzi, ABaldini, and M. Nascimbeni. Maximum equivalent stress in a pin-loaded lug subject to inclined loading. Journal of Strain Analysis, 41:297?309, 2006.
  2. Strozzi, et al. Maximum stresses in a taper-shanked round-ended lug loaded by an oblique concentrated force. Strain, 43:109?118, 2007.
  3. ASME BTH-1, "Design of Below-the-Hook Lifting Devices," The American Society of Mechanical Engineers, 2014.
  4. V.Ramakishan, A.MahaboobBasha, Design and Analysis of Lug Joint in an Airframe Structure Using Finite Element Method, International Research Journal of Engineering and Technology (IRJET), 04:08, Aug -2017
  5. Ciavarella, M. and Decuzzi, P. 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. [6] Hou, J. P. and Hills, D. A. Contact between a pin and a plate with a hole under interference-fit and clearance-fit conditions. Proc. IMechE, Part C: J. Mechani- calEngineeringScience,2001,215(6),629?639.
  6. David Duerr. Pinned Connection Strength and Behavior.?Journal of Structural Engineering, 2006,?132:2,182-194.
  7. Dundurs, J. and Stippes, M. Role of elastic con- stants in certain contact problems. Trans. ASME, J. Appl. Mechanics, 1970, 37, 965?970.
  8. Fokker technical handbook for strength data: Elastic stress concentration factors, 2016. TH 3.281.
  9. Fokker technical handbook for strength data: Fatigue strength of lugs, 1980. TH 3.411.
  10. LevensduurBepaling van eenBeslagoogonderNietLongitudinaleDynamischeBelasting (in Dutch), 1984. SC M-005.
  11. S-185: Stress Concentration Factors of Transversely Loaded Lugs by Finite Element Analysis, 1993. S-185 is a Fokker internal restricted report.
  12. E.Maddux, ?Stress Analysis Manual?, Air Force Flight Dynamics Laboratory, Technology Inc Dayton, Ohio, US Department of Commerce, Technology Administration, Aug 1969, National Technical Information Service, Springfield, VA-22161.
  13. Stress concentration factors for symmetrical isotropic lugs, 1990. HSB 34112-02 Issue B.
  14. IHS ESDU. Stress concentration factors, Axially loaded lugs with clearance-fit pins. London, 1981. ESDU Report 81006.
  15. C. EKVALL.? "Static strength analysis of pin-loaded lugs",?Journal of Aircraft, Vol.?23, No.?5?(1986), pp. 438-443.
  16. Schijve, D. Broek, and F.A. Jacobs. Fatigue test on aluminium alloy lugs with special reference to fretting. NationaalLucht- en Ruimtevaartlaboratorium, 1963. NLR-TN M.2103. [22] A. Buch. Fatigue and fretting of pin-lug joints with and without interference fit. Wear, 43:9?16, 1977. 80 References
  17. Schijve. Fatigue in Lugs. Contributions to the Theory of Aircraft Structures. Professor A. van der Neut Anniversary Volume. Nijgh-WoltersNoordhoff University Press, 1972, pp. 423-440.
  18. Schijve. Fatigue of Structures and Materials. Second Edition. Springer, 2009. [4] HSB. Static failure loads of metallic double shear lugs, 2010. HSB 26101-01 Issue F.
  19. C. Ekvall. Static strength analysis of pin-loaded lugs. Journal of Aircraft, 23:438?443, 1986.
  20. J. Homan, and A.A. Jongebreur. Calculation method for predicting the fatigue life of riveted joints. Durability and structural integrity of airframes, 1:175?190, 1993.
  21. Jiang, Y., She, C., Yu, P., and Guo, W. Three- dimensional stress concentrations at circular pin holes in clearance-fit lugs. Fatigue and Fracture of Engng Mater. andStructs, 2011, preprint available.
  22. Kathiresan, T.M. Hsu, and T.R. Brussat. Advanced Life Analysis Methods Volume II -Crack Growth Analysis Methods for Attachment Lugs. Lockheed-Georgia Company, Wright-Patterson Air Force Base Ohio 45433, 1984. AFWAL-TR-84-3080.
  23. K, Hsu. T. M. and Rudd. J. I. ?Stress and Fracture Analysis of Tapered Attachment Lugs.? Fracture Mechanics Fifteenth Symposium, ASTM STP 833, Philadelphia, pp. 72-92, 1984.
  24. Lin, G., Zeng, Y., and Xiao, B. Analysis and solution of pin connector stresses. Advd Mater. Res., 2011, 230?232, 435?439.
  25. M. Frocht, and H.N. Hill. Stress concentration factors around a central circular hole in a plate loaded through pin in the hole. J. Appl. Mech., 7:A5?A9, March 1940.
  26. Melcon, M.A and F.M. Hoblit, "Development in the Analysis of Lugs and Shear Pins," Product Engineering, June 1953.
  27. A. Bauchau, and J.I. Craig. Structural Analysis with Applications to Aerospace Structures. Springer, Dordrecht, 2009.
  28. B. Heywood, Ph. D., and M. I. Mech. E. The strength of lugs in fatigue. Technical Report 182, Royal Aircraft Establishment, London, 1956.
  29. B. Heywood. Designing Against Fatigue. Chapman and Hall Ltd, London, 1962.
  30. J. Grant, J. Smart, and P. Stanley. A parametric study of the elastic stress distribution in pin-loaded lugs. Journal of Strain Analysis, 29:299?307, 1994.
  31. E. Larsson. The Development of a Calculation Method for the Fatigue Strength of Lugs and a Study of the Test Results for Lugs of Aluminium. Fatigue Design Procedures, I.C.A.F. Symposium, 1969, pp. 309-339.
  32. Stress concentration factors in axially loaded lugs with clearancefit pins. ESDU Report 81006, London, 1981.
  33. Sundaram, N. and Farris, T. N. The generalized advancing conformal contact problem with fric- tion, pin loads and remote loading ? case of rigid pin. Int.J. Solids Structs, 2010, 47, 801?815.
  34. D. Pilkey. Peterson?s Stress Concentration Factors. Second Edition. John Wiley & Sons, INC, New York, 1997.
  35. Wang, G. S. Stress analysis for a lug under various experimental conditions. J. Strain Analysis, 1994, 29(1), 7?16.

How to Cite This Article

K.S.Vishwanath. (2018); EXPERIMENTAL VERIFICATION OF STRESS CONCENTRATION FACTOR IN AN UNFLAWED LUG USING UNIFORM & GRADED MESH OF 2D LINEAR & NON-LINEAR ANALYSIS USING MSC.NASTRAN / MSC.PATRAN., Int. J. of Adv. Res., 6 (11), 1069-1079, ISSN 2320-5407. DOI: https://doi.org/10.21474/IJAR01/8095

Corresponding Author

K.S.Vishwanath
Assistant Professor, Department of Aerospace Engineering, IIAEM, Jain University, Bangalore-562112
Creative Commons Attribution 4.0 This work is licensed under a Creative Commons Attribution 4.0 International License.