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Advanced Solutions Rigid and Flexible Bodies Mechanical systems can contain complex assemblies of interconnected parts undergoing large overall motion, such as in ground vehicle suspension assemblies, robotic manipulators in manufacturing processes, and aircraft landing gear systems. For a faster, more efficient solution to this problem class, ANSYS provides a rigid multibody dynamics module. With minimal investment in model setup and computational resources early in development, you gain deep understanding of motion and stability of mechanical systems. Then, if more fidelity is required with detailed designs, you can easily convert the model to a partially or fully flexible representation, one capable of capturing large deformations and material nonlinearities. Rotating Structure Dynamics Rotordynamics applications serve to identify behavior and diagnosis of rotating structures. The capability is commonly used to analyze behavior of structures ranging from jet engines and steam turbines to auto engines and computer disk storage. Rotordynamics can effectively compute critical speeds and the effect of unbalanced loads on a structure. ANSYS solutions provide modal and transient analysis capabilities. They allow creation of Campbell plots to identify critical speeds of single or multiple spool systems, for beams, shells and solid elements. Bearings models are available; an interface enables importing bearing characteristics from outside sources. For static, modal or harmonic analysis of rotating parts with geometric patterns, cyclic symmetry modeling reduces computation time. "We use ANSYS as a virtual laboratory, since ANSYS code is really close to the actual physics. It assures you when something is a good idea — and demonstrates clearly when a design fails." Benjamin Hagege Assistant Professor University of Technology of Compiègne Vibration analysis of a bladed disc using cyclic symmetry 5 https://www.randsim.com/structures