Will Write for Food, a popular book in the food blogging world, is a play on the canonical “Will Work for Food” signs that panhandlers display at busy intersections.
Although the food blogging world is over saturated, the OpenSees blogging world is not.
Will I OpenSees for food? The answer to that question is open to interpretation.
Will I write for OpenSees? Yes. Always.
So, are there any OpenSees topics you’d like me to write about? Let me know in the comments section below or send me an e-mail.
Please limit your responses to things like “What happens if you use only one integration point in a beam-column element?” or “Will you write something about the PFEM in OpenSees?”, and not “Why won’t my analysis converge?”
Portwood Digital 
Please explain how exactly the equations are formed and solved in OpenSees for Soil Dynamics problems. Thank You,
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At the global level, the equations are formed and solved just like structural dynamics — mass, stiffness, damping, time integration. Some of the soil elements couple pressure and velocity for the element state determination.
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I hope to read more about convergence problem meaning in opensees
is it due to global collapse or local collapse or algorithm failure, and how to decide that?
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That decision usually requires looking at the results on a case by case basis. I have seen some cases where the simulation does not converge under low load levels due to numerical issues.
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I’d like to hear more about your thoughts on the future of OpenSees. What need improvement? What new features would be most impactful? I am interested in both the short term and long term future.
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Also, why is my IDA of a three-dimensional RC bridge not converging?
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Probably an issue with your concrete material tags.
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Thanks! That is a good question to ponder.
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It’s great to hear you will always write for OpenSees. Will you write more posts about sensitivity?
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Yes, that was secretly a question I was hoping to hear!
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What about fragility analysis, tools, steps or function to do that in opensees?
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Thanks for your posts. What about structural analysis regarding temperature gradients? These are important loads in concrete bridge design, mainly design related to service limit states.
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That’s a good idea. Not fire, right? Just thermal loading that doesn’t make things melt?
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yes, not fire. Just temperature changes, uniform and linear gradientes.
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