The solution of the ANSYS Rigid Body Dynamics solver is not used for the mixed rigid/flexible computation. In this case, a complete new is performed using the implicit structural solver instead of ANSYS Rigid Body Dynamics. full rigid/flexible analysis: one or several bodies are considered as flexible and stresses and deformations are requested. In this case, the body to be analyzed is isolated from the other parts and investigated separately. Two methods can be applied: - load transfer from the rigid analysis at a given time step to a single body for a static analysis. Then, the user can decide to analyze stresses and deformations in some parts of the model. In this case, the module is used to compute the system under the "fully rigid" assumption and helps properly setup all connections between part. It can also be used as a basis for a so-called "Rigid-Flexible" analysis. It can be used for the design of assemblies. Typical outputs include forces, velocities or displacement at joints. What's it used for? The ANSYS Rigid Dynamics solver is intended to be used for the study of the relative motion of parts within an assembly. The ANSYS Rigid Body Dynamics also include bushing elements to take damping and elasticity in the model. Joints also include stops and locks so as to be able to restrain the motion between given boundaries (stops) or lock the model into a given position once reached (locks). as well as a 'general joint' the user can use to define a specific set of degrees of freedom. Many types of joints are available with ANSYS Rigid Dynamics: cylindrical, translational, revolute. It defines which degrees of freedom couple two bodies at a given location. The output quantities of this solver are forces, velocities, accelerations at joints of the model.Ī joint is a link between two parts. As a result of this, no estimate of deformations or stresses can be provided by ANSYS Rigid Dynamics. "Rigid Bodies" means that all bodies are assumed to be infinitely stiff.
The solver is an explicit solver - hence its ability to solve transient simulations of rigid models much faster than the implicit structural solver. Technical definitions Looking at the chart defining the various fields of applications of structural mechanics, Rigid Body Dynamics falls under the "Explicit Transient Dynamics" area. The ANSYS Rigid Body Dynamics module also has added interactive joint manipulation and ANSYS Workbench Simulation interface options. This solver is significantly faster than the structural solver for purely rigid transient dynamic simulations. It is an add-on to the ANSYS Structural and Mechanical products. ANSYS Rigid Body Dynamics Introduction ANSYS Rigid Body Dynamics is a solver that is tuned for solving purely rigid assemblies allowing the user to simulate mechanisms.
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