Efficiency and Stiffness of the Single Lap Bolt Joints in Glass Epoxy Composites

Authors

  • Jaspreet Singh Mechanical Engineering Department, Thapar Institute of Engineering and Technology, Patiala - 147 004
  • Kulwinder Singh Mechanical Engineering Department, Thapar Institute of Engineering and Technology, Patiala - 147 004
  • J. S. Saini Mechanical Engineering Department, Thapar Institute of Engineering and Technology, Patiala - 147 004

DOI:

https://doi.org/10.14429/dsj.69.13348

Keywords:

Glass fiber, Bolt joint, Joint efficiency, Characteristic curve, Tsai-Wu failure theory

Abstract

The present work deals with the investigations on the joint efficiency and the joint stiffness of the single lap bolt joint made of two dimensional woven glass fibre reinforced composite materials. The effect of joint geometry, bolt pretension and washer has been determined on the bolt joint performance. To estimate the effect of geometric parameters; the edge-to-hole diameter (e/d) and width-to-hole diameter (w/d) ratios are varied from 3 to 4 and 3 to 5, respectively. To study the worst loading conditions; the bolt pre-tension is set to zero, whereas 5 Nm torque is applied to investigate the joint in fully clamped conditions. Two different sizes of washer i.e., the outer diameter of 12 mm and 16 mm have been studied to estimate the effect of the washer on failure load, joint stiffness, and joint efficiency. Progressive damage analysis has been performed on the single lap bolt joint. Characteristic curve method along with Tsai-Wu failure criteria has been used for the prediction of the failure loads and failure modes. The joint stiffness and the failure load of the joint are increased with the increase of w/d ratios. However, the joint efficiency was negatively influenced by w/d ratio.

Author Biographies

Jaspreet Singh, Mechanical Engineering Department, Thapar Institute of Engineering and Technology, Patiala - 147 004

Mr Jaspreet Singh received his ME (Computer Aided Design and Manufacturing Engineering) from Thapar Institute of Engineering and Technology, Patiala, Punjab. His research work involves analysis of mechanical joints prepared from polymer materials.

Kulwinder Singh, Mechanical Engineering Department, Thapar Institute of Engineering and Technology, Patiala - 147 004

Mr Kulwinder Singh is pursuing his doctoral from Thapar Institute of Engineering and Technology, Patiala, Punjab. His research work involves analysis of mechanical joints prepared from polymer nanocomposite materials.

J. S. Saini, Mechanical Engineering Department, Thapar Institute of Engineering and Technology, Patiala - 147 004

Dr J.S. Saini is working as Associate Professor in Mechanical Engineering Department at Thapar Institute of Engineering and Technology, Patiala, Punjab. His specialisation is design and analysis. He has nearly 30 research papers in various journals and conferences. Presently he is working in the area of nano composites and their analysis.

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Published

2019-04-30

How to Cite

Singh, J., Singh, K., & Saini, J. S. (2019). Efficiency and Stiffness of the Single Lap Bolt Joints in Glass Epoxy Composites. Defence Science Journal, 69(3), 280–289. https://doi.org/10.14429/dsj.69.13348

Issue

Vol. 69 No. 3

Section

General Papers

License

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