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Chiabuotu Celine C,NKWOR CHIMEZIE AGBAFOR,EFOSA OBASEKI,SAMUEL .O. IKEGBULA,EKPECHI DANIEL ARINZE,EWURUM TENNISON IFECHUKWU

  Keywords

Keywords ---- Stress, Bolt and nut, Fastening, Finite element analysis, Turning moment, Constraints

  Abstract


ABSTRACT The study, design and finite element investigation of bolt and nut for fastening stress reduction were successfully investigated. researchers created a bolt of M6 with a hexagonal head of 12mm, and a hexagonal nut of M12 both having a right hand ANSI metric thread profile, with assigned material being Steel, High Strength, Low Alloy to reduce wear and tear using AutoDesk inventor. The created model was analyzed using FEA software. The bolt was first subjected to fastening moment of 240 N mm, with the nut being subjected to fixed constraints. Thereafter, the nut was subjected to fastening moment of 240 N mm with the bolt subjected to fixed constraints. Results showed that the ultimate tensile strength of assigned material reduced from 540 MPa to 448 MPa when fastening moment was applied at bolt head and Nut side respectively. This suggested that failure due to tensile stress would be predominant when fastening at the Nut side. Also, maximum fastening stresses were observed to be 7.109 MPa and 6.66822 MPa when fastening moment was applied at bolt head and Nut side respectively. This suggested that fastening at the Nut side would reduce fastening stress or thread wear. In addition, the maximum displacements were observed to be 0.00190463 mm and 0.00204884 mm when fastening moment was applied at bolt head and Nut side respectively. This indicated that fastening at the Nut side will give lesser revolution to achieve a tightened bolt and nut joint. Furthermore, the maximum contact pressures were observed to be 10.7241 MPa and 10.9924 MPa when fastening moment was applied at bolt head and Nut side respectively. This indicated that slippage is minimized at nut side fastening with high induce stress at the bolt shank, as the study revealed. The researchers made the following recommendations: Fastening at nut side should be adopted to reduce stress and maximize displacement/ advancement, bolt and nut design materials must have higher tensile strength rather than compressive strength or yield strength, since failure due to tensile stress is predominant, etc.

  IJCRT's Publication Details

  Unique Identification Number - IJCRT2402542

  Paper ID - 250848

  Author type - Foreign Author

  Page Number(s) - e628-e647

  Pubished in - Volume 12 | Issue 2 | February 2024

  DOI (Digital Object Identifier) -   

  No Of Downloads - 27

  Author Country - Nigeria, +234, Owerri , Owerri , +234, Science and Technology

  Publisher Name - IJPUBLICATION | www.ijcrt.org | ISSN : 2320-2882

  E-ISSN Number - 2320-2882

  Published Paper PDF : - http://www.ijcrt.org/papers/IJCRT2402542

  Published Paper URL: : - http://ijcrt.org/viewfull.php?&p_id=IJCRT2402542

  Published Paper PDF Downlaod: - download.php?file=IJCRT2402542

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Chiabuotu Celine C,NKWOR CHIMEZIE AGBAFOR,EFOSA OBASEKI,SAMUEL .O. IKEGBULA,EKPECHI DANIEL ARINZE,EWURUM TENNISON IFECHUKWU,   "Design and Finite Element Investigation of Bolt and Nut for Fastening Stress Reduction", International Journal of Creative Research Thoughts (IJCRT), ISSN:2320-2882, Volume.12, Issue 2, pp.e628-e647, February 2024, Available at :http://www.ijcrt.org/papers/IJCRT2402542.pdf

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