Flipping through J.C. Smith’s Structural Analysis textbook, I’m confident OpenSees can handle every problem. Same goes for any other textbook on structural analysis. However, I totally paused on Problem 9.34 as it hinted at contact nonlinearity. The cantilever and the simple span have flexural stiffness EI=5120 kip-ft2, something in the ballpark of W6x12 steel members, but fudged to … Continue reading Positive OpenSees Contact
Tag: Contact
Faux Contact Sport
In a similar take on sprung masses and friction, it turns out that ENT+InitStrain in a zero length element is also an easy way to fake one-dimensional contact and impact. Consider Problem 14-23 from Hibbeler 14th edition. An 8 kg block, 2 m from a spring of stiffness 200 N/m, is given an initial velocity … Continue reading Faux Contact Sport
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