Bolt Pre-tension Techniques in ABAQUS - Part 2
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- Опубліковано 5 жов 2024
- 🔩 Dive into the world of Finite Element Analysis (FEA) as we unravel the intricacies of bolted connections in ABAQUS. Our latest video tutorial explores two fundamental approaches-Pre-tension Section and Translator Connector-to enhance your structural simulations and elevate your FEA expertise.
📖 Related Blog Post:
For an in-depth understanding and practical insights, check out our blog post, "Bolt Pre-tension Techniques in ABAQUS." Whether you're a seasoned analyst or a newcomer, this comprehensive guide covers theoretical foundations, advanced techniques, and real-world applications. Read the blog post here: learnfea.com/b...
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👇 Key Points Covered in the Video:
First Technique: Pre-tension Section
Applying bolt pre-tension across a user-defined section.
Utilizing continuum elements for flexibility.
Controlling pre-tension node and applying loads.
Real-world example: bracket, bolt, and spacer assembly.
Second Technique: Translator Connector
Creating nut and bolt couplings.
Aligning reference points and establishing a translator connector.
Applying connector load to achieve desired bolt pre-tension.
Visual demonstration of the process.
🔍 Conclusion:
Discover the merits of each technique and choose the right approach based on project requirements. Whether you prefer the systematic Pre-tension Section or the innovative Translator Connector, our goal is to tighten virtual bolts for reliable engineering simulations.
📘 Learn More:
New to Finite Element Analysis? Demystify its complexities with our blog post, "Finite Element Analysis (FEA) Demystified." Read it here.
For detailed information complementing the concepts discussed, consult the Abaqus User's Guide.
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Link to the course description: learnfea.com/t...
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Equip yourself with a versatile toolkit for structural integrity and accuracy in FEA-happy learning! 🔧📏💻 #FiniteElementAnalysis #ABAQUS #EngineeringSimulation #FEA #BoltPreTension #StructuralIntegrity
very helpfull, thanks for the content!
Great content! Well explained👍. If the objective is to find the stress on the bolt due to pre-tension, which of the two methods you would recommend and why?
I'd recommend the one the uses the translator connector, because the force will come from the nut region, which is what happens in reality. But the standard method also yields to representative stress countour in the bolt. A good exercise would be to test it by yourself. Create the same bolted connection using these two different techniques and compare the stress countour plot on the bolt. Great question, by the way.
@@eng.renatocarvalho Thanks for the reply.
Thank you for this very instructive video.
I would like to know if it's possible to apply a relative displacement between the two nodes of connector, in order to create the pre-load, rather than to apply a force
Yes, it is possible. A good example of usage of displacement boundary condition for bolt pretension is when you have to apply a bolt pretension of 80 kN, for instance, and you create a first step where you apply a displacement BC in the connector just to initialize the contact between the parts, or even to close an initial GAP. It’s much easier to reach for convergence with displacement BCs. Then, let’s suppose that in the first step you reach a pretension load of 30 kN. On the second step, you can apply a load boundary condition to reach to the required 80 kN. On the second step, since the contacts are already initialized and GAPs closed, it’s going to be much easier to get your model converged. Let me know if you had any doubt.
Thank you for your reply.
Would those two steps be static general ? Some particular advice about the contacts to apply ?
@@CP-zi3eg Yes, it can be static, but not necessarily. In regard to contacts, there's a blog post on LearnFEA detailing how to model contacts in Abaqus. You can find it accessible via the following link: learnfea.com/surface-to-surface-contact-in-abaqus/