OpenSees does not compute reactions automatically because this can be a time consuming process--OpenSees assembles reactions over all nodes in a model, not just over the nodes that are constrained. When performing response history analysis, assembling reactions is likely not something you want or need to do at every time step. You probably just want … Continue reading Trying to Get a Reaction
Tag: Reactions
Reaction and Unbalance
A confluence of recent inquiries led me to take a look at what the nodeReaction and nodeUnbalance commands return in an OpenSees dynamic analysis. While I have a pretty good handle on nodeReaction, going in to this post, I was unsure about nodeUnbalance. We can learn a lot from a couple springs, so I created … Continue reading Reaction and Unbalance
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