Back when I was a new assistant professor in Eastchester, when I perused the latest issues of journals, I read an article that I couldn’t believe was published. So I wrote a discussion. The article, “Nonlinear truss analysis by one matrix inversion”, was just what its title implied: the Modified Newton algorithm applied to the nonlinear … Continue reading Can’t Truss It
Tag: Truss
Like Spinning Nodes
After posting on reasons that the solution to Ax=b fails, I realized I omitted an important case: truss nodes in a frame model. Although this post might be a stretch for an LBU (least bloggable unit), the blogging equivalent of an LPU, there are important factors to consider for structural models comprised of truss and … Continue reading Like Spinning Nodes
A Very Stable Challenge
With linear structural analysis, a number is a number. However, reality starts to creep in when physics dictates that you need to account for nonlinear effects. The three member structure shown below is a perfect example--Example1.1.tcl, one of the most OG OpenSees examples. Have you ever paid attention to the member sizes though? If so, … Continue reading A Very Stable Challenge
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