Modeling T-Stub as Beam (having difficulty)

Click For Summary
SUMMARY

This discussion focuses on modeling a T-stub joint as a beam to determine the bending stress of the bolt. The user is facing challenges due to the statically indeterminate nature of the problem, leading to an excess of unknowns compared to equations. They have attempted methods such as superposition and deflection equations but have not achieved a satisfactory solution. The user has updated their analysis by equating deflection at the bolt to the bolt reaction divided by the bolt stiffness, resulting in specific reaction forces from their calculations.

PREREQUISITES
  • Understanding of beam theory and statically indeterminate structures
  • Familiarity with bolt load analysis and prying load concepts
  • Proficiency in using ANSYS for structural modeling
  • Knowledge of deflection equations and superposition methods
NEXT STEPS
  • Study the principles of statically indeterminate structures in detail
  • Learn advanced techniques for solving beam deflection problems
  • Explore the use of ANSYS for modeling complex joint behaviors
  • Research methods for accurately calculating bolt stiffness and its impact on joint analysis
USEFUL FOR

Structural engineers, mechanical engineers, and anyone involved in the analysis of bolted connections and joint modeling in engineering applications.

tricha122
Messages
18
Reaction score
0
Hi all, I am trying to find the slope of a T-stub joint at the bolt in order to find the bending stress of the bolt.

I have drawn 1/2 of the T-stub as a beam. The beam analysis requires (for physicality) that the slope at each side of the beam to be zero. There is an applied load, a bolt load, and a prying load.

This problem is certainly statically indeterminate... I have tried a few methods of circumventing this (superposition, deflection equations) yet still always end up with 1 more unknown than equation.

Can anyone take a look and see if (a) I am making the right assumptions, and (b) how to tackle this problem?

Much appreciated!
 

Attachments

  • beam_analysis.png
    beam_analysis.png
    24 KB · Views: 552
Engineering news on Phys.org
I have since updated my analysis by assuming the deflection at the bolt is equivalent to the bolt reaction divided by the bolt stiffness, kb.

I have attached all of my equations.

I am getting Rb = 43 and Rc = 13 , (with applied load of T = 30) in my beam analysis.

Modeling the beam in ANSYS i get RB = -10, RC = 20 ... So there appears to be an error somewhere.

Anyone feel like looking through my scribble to help me out?

Any help would be greatly appreciated!
 

Attachments

Similar threads

Replies
33
Views
5K
  • · Replies 5 ·
Replies
5
Views
6K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 4 ·
Replies
4
Views
2K
Replies
6
Views
2K
  • · Replies 6 ·
Replies
6
Views
4K
  • · Replies 5 ·
Replies
5
Views
4K
  • · Replies 7 ·
Replies
7
Views
3K
  • · Replies 2 ·
Replies
2
Views
2K
Replies
22
Views
25K