Learning Forum

[taha.muzaffar94]

I have created a simple test project to analyze a bolted connection under three scenarios. The details and results are enclosed in the PowerPoint file as google drive link.

My main concern is that when we consider a bonded connection instead of a bolted one, the results vary significantly. In real scenarios, we observe higher stress levels. Doesn't this imply that our analysis might be underestimating the stress levels when we avoid modeling bolts to save computational time?

https://drive.google.com/drive/folders/1FbaEO1ewLkSdY7YbZfLjZRtiC89ctoPN?usp=drive_link

[Deepak]

Simplifying assumptions in modeling, such as replacing bolted connections with bonded contacts, are made to reduce computational costs while aiming to maintain engineering accuracy for the application. It is true that in some cases, these simplifications can lead to an underestimation of stress levels.

The model used for the bolt: 

• Solid models offer the best precision and give the most information
• Beam models can be used if some inaccuracy is acceptable.

Thanks,

Deepak

[taha.muzaffar94]

Could you please review my results? I have enclosed a Google Drive link that contains a PowerPoint file. I conducted a simple analysis to compare three scenarios.

[Erik Kostson]

 

Hi

Ansys Employees cannot provide result review, or download files.

Perhaps some other forum members can chime in and provide some feedback on your results.

As mentioned above there are different levels of fidelity on this (3D, beams, etc.), so they will give different results.

See our course on contacts and bolted connections for more details.

All the best

Erik