OpenSees Mandela Effect

The Mandela Effect refers to a belief that is widely held, but completely false. Examples, some of which are admittedly a stretch, range from common misspellings to frequently misquoted movie lines. The Mandela Effect applies to OpenSees as well. Along the lines of misspellings, there is a widely held belief that OpenSees is capitalized OpenSEES. … Continue reading OpenSees Mandela Effect

OpenSees Every Day

Using OpenSees as a direct object is common, e.g., "We used OpenSees to perform incremental dynamic analysis of reinforced concrete shear walls." That sentence was declarative and OpenSees was a noun. But OpenSees can also be a verb, in declarative and other types of sentences. Declarative I like to OpenSees every day. Interrogative Do you … Continue reading OpenSees Every Day

Wrapper’s Delight

What is the output produced by this analysis? Sure, you can copy and paste the script to get the answer. But that's no fun. Think about the model and analysis. Can you explain what's going on before getting the answer? import openseespy.opensees as ops ops.wipe() ops.model('basic','-ndm',1,'-ndf',1) N = 365 ops.uniaxialMaterial('Elastic',0,1.0) for i in range(N): ops.uniaxialMaterial('Multiplier',i+1,i,1.01) … Continue reading Wrapper’s Delight

It Hides in Plain Sight

It's no secret that engineers write technical documents in a style that no one would actually speak. Like, if I'm explaining plastic hinge integration to you in person, it would sound nothing like what's written in the journal article. It's difficult to measure the amount of nonsense in technical writing, but qualitatively, you know it … Continue reading It Hides in Plain Sight