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{live-template:Test Problem} You can solve pendulum problems in SAP2000 by performing nonlinear time-history analysis with large deflections. If you are trying to solve typical structural problems with a pendulum used for isolation or as a tuned-mass damper, this is usually represented by using a linear spring to represent the restoring force. For a pendulum, this could be either be a torsional spring at the support, or a horizontal spring, attached to the bottom. h1. Screenshots The screenshots below and the attached video show modeling of set of pendulums hitting each other (so called [Newton's cradle|http://en.wikipedia.org/wiki/Newton%27s_cradle]). The contact was modeled using [gap links|kb:Gap link property] connecting each adjacent pair of balls. However, because the rods were axially stiff, the gaps contacted nicely. !Pendulum_1.png! !Pendulum_2.png! h1. See Also * [kb:Contact surface problem] h1. Attachments * [Pendulum video|Pendulum^Pendulum_video.zip] (Zipped AVI file, 0.3 MB) {hidden-content} *To do:* Upload model for test problem with pendulum (by Rob). {hidden-content} |
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