Mechanical Design, Manufacturing and Engineering Forum
[ Home ] [ Search ] [ Engineering and Design Database ] [ Product and Services Directory ]
[ Engineering Forum ] [ DFM DFA Training and Trainers ] [ GD&T Training GD&T Trainers ] [ Advertise ]
[ Archive#1 ] [ Archive #2 ] [ Archive #3] [ Calculators ]
Forum Moderators: randykimball, Administrator

Bending strength of bolt and Torque
Post Reply   Forum
Posted by: timmyo ®

02/25/2005, 08:15:42
Author Profile Mail author Edit

If a bolt is torqued properly and there is resulting clamping force that acts axially through the bolt, what effect does the axial force have on the bending strength of the bolt. The bolt in this case clamps down a hook. The hook is then subject to an angled load from a strap. Thus, there is a vertical and horizontal load to the hook which results in shear on the bolt from the vertical, normal stress on the bolt from the horizontal and bending moment stress on the bolt from both the horizontal and vertical force components. Does the axial clamping force on the bolt, which comes from the torque, cancel out some of the bending moment induced by the load on the hook?

Thanks in advance







Post Reply | Recommend | Alert View All   | Next |

Replies to this message


Re: Bending strength of bolt and Torque
Re: Bending strength of bolt and Torque -- timmyo Post Reply Top of thread Forum
Posted by: Cragyon ®
Bart
03/02/2005, 06:36:08
Author Profile Mail author Edit
The axial load applied to the bolt due to torque preload will change (reduce) the deflection due to a bending load. The working strength of the bolt remains unchanged. Your design margin of safety for the bolt should incorporate your anticipated combined loading due to axial and bending loading.






Post Reply | Recommend | Alert Where am I? Original Top of thread
Re: Bending strength of bolt and Torque
Re: Bending strength of bolt and Torque -- timmyo Post Reply Top of thread Forum
Posted by: SanJuan ®

03/01/2005, 00:19:31
Author Profile Mail author Edit
use either Maximum Shear Stress Theory or Octahedral shear stress theory to solved for the maximum shear stress.Refer to any text on strenght of Materials.






Post Reply | Recommend | Alert Where am I? Original Top of thread | |

Powered by Engineers Edge

© Copyright 2000 - 2024, by Engineers Edge, LLC All rights reserved.  Disclaimer