Introduction
A brief description of the example.
*CONSTRAINED_JOINT_REVOLUTE Hinged Shell with Stop Angle (Revolute Joint) LS-DYNA Manual Section: *CONSTRAINED_JOINT_REVOLUTE Additional Sections: *CONSTRAINED_JOINT_STIFFNESS *CONTROL_TIMESTEP Example: Hinged Shell with Stop Angle (Revolute Joint) Filename: constrained.joint_revolute.k Description: Two rigid shell elements are joined together using a revolute joint. A stop angle is defined so that the rotating plate can only rotate 30 degrees relative to the other plate. Model: A pair of concentrated loads are applied to the end nodes of a hinge-jointed shell system using * LOAD_NODE_POINT. One of the rigid plates is fixed by using the capability within the *MAT_R IGID keyword. The rotating plate has a stop angle of 30 degrees relative to the fixed plate defined using the *CONSTRAINED_JOINT_STIFFNESS_GENERALIZED keyword. Because all components in the model are rigid, the time step needs to be controlled by limiting the maximum time step to 4.15E-06 s.(In deformable structures, the minimum time step is usually the one of concern.) Results: The rotating plate at several states are shown imposed on each other. The maximum rotated angle is closer to 38 degrees rather than the specified 30 degrees. This is because the joint stiffness actual defines the angle at which the resistance force is to begin. The forces associated with stopping the rotating plate can be determined by examining the jntforc ascii file.