Tagged: constraints, General, mechanical, remote-points, structural-mechanics
January 25, 2023 at 7:34 amFAQParticipant
Remote points are very useful when there is a need to allow rotational freedom at a face, while applying a displacement (zero or non-zero) to the center of the face. You can’t do that with a Fixed Support or a Displacement BC. In a scenario where there is a structure with a pinned connection to ground and it has a rotational freedom. Modeling the pin to allow rotation can be avoided by using a Remote Point and leaving that rotational DOF free while setting the displacements to zero. Remote points are very useful in cantilevered structures when you want to cut away a length of the geometry that carries the load from the end where the force is applied to the critical area at the base, and you don’t want to mesh that length, but you need to apply a force to the end. It’s possible to replace a force at the end with a force and a moment at the cut face, but it is simpler to create a remote point where the end used to be and just apply the force to the remote point and let the remote point create the correct moment on the cut face for you. Also, since remote points define a specific point in space, multiple boundary conditions can be scoped to each remote point. This single remote association avoids over-constraint conditions that can occur when multiple remote loads are scoped to the same geometry. Lastly, they are also very useful when using constraint equations.
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