Thread design for tubular members

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SUMMARY

This discussion focuses on the design of a buttress thread for a tubular member with an outer diameter of 250mm and an inner diameter of 100mm, subjected to a cyclic axial load of 157 kN. The user seeks guidance on resources for designing the thread, particularly for fastening the member to an outer structure. Recommendations include using CAD software and ANSYS for analysis, as well as performing hand calculations to determine the stresses on the thread teeth.

PREREQUISITES
  • Understanding of buttress thread design principles
  • Familiarity with CAD software for mechanical design
  • Knowledge of finite element analysis using ANSYS
  • Basic principles of stress analysis in mechanical components
NEXT STEPS
  • Research buttress thread specifications and design guidelines
  • Learn how to perform stress analysis using ANSYS
  • Explore CAD software options for mechanical design
  • Study hand calculation methods for thread stress analysis
USEFUL FOR

Mechanical engineers, structural designers, and anyone involved in the design and analysis of threaded connections in tubular structures.

Kuda
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Hi people
new to this forum but i need some help on my thread design. I've been browsing the net for some time to try and find some help on the design of this but have not found much.

My problem is i have a tubular member of 250mm outer and 100mm inner diameters that is subjected to an axial load of around 157 kN, this load is cyclic and occurs in only one direction so i figured a buttress thread is probs the best selection. This member needs to be fastened to an outer structure but i am having trouble finding the resources needed to design such a thread. The maximum threaded length is about 250mm and i am looking at stainless steels but materials is not really my major concern at this time.

Any help will be appreciated
 
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Have you tried analyzing any designs using CAD software, hand-calculations, ANSYS, etc?

If you can't find any resources I would just try to analyze the bolts' cross-section by hand and find the stresses on the teeth of the thread. Have you checked any libraries for books on thread types?
 

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