Example Description

This example uses a three-hinged arch to test static nonlinear analysis with large axial displacements in this model. A concentrated vertical downward load, P, is applied to the center joint of the three-hinge arch. The load P is increased until the vertical downward deflection at the center joint reaches one foot. The resulting vertical support reaction at joint 1 is compared with independent hand calculated results.

Tested Features

Static nonlinear analysis of frame structure with large axial displacements using this model P-Delta plus large displacements option
Frame end releases

Library

Object Link: https://bim.aecbolt.com/objida630sui45du0rp5nfks3cn.libobj

Output Parameter	OpenBrIM	SAP2000	Independent	Percent Difference (SAP2000 vs Independent)	Percent Difference (OpenBrIM vs Independent)
Fz (jt 1) kip	3497	3497	3497	0%	0%

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