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Pendulum systems may be modeled in SAP2000 using nonlinear time-history analysis with large deflections. Typically, the restoring force comes from a linear spring modeled either as a torsional spring at the support or as a horizontal spring attached to the free end. Pendulum systems may be useful for simulation and solution of isolation and tuned-mass damper problems.
As shown in Figures 1 and 2, a
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Newton's cradle
pendulum system is modeled using axially stiff frame objects and gap (compression-only) links, located at the points of contact. Attached is an animation of the system oscillating.
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Figure 1 - Newton's cradle pendulum system
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Figure 2 - Newton's cradle pendulum system
See Also
- Contact surface article
Attachments
- [Pendulum video |Pendulum^Pendulum_video.zip] (zipped AVI file)
