Node locations are arbitrary the response of the

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Unformatted text preview: 178.3 Velocity Profile Across Channel ANSYS Verification Manual . ANSYS Release 9.0 . 002114 . © SAS IP, Inc. 1–403 VM179: Dynamic Double Rotation of a Jointed Beam Overview Reference: Any basic mechanics text Analysis Type(s): Full Transient Dynamic Analysis (ANTYPE = 4) Element Type(s): Revolute Joint Elements (COMBIN7) 3-D Elastic Beam Elements (BEAM4) Input Listing: vm179.dat Test Case A torque M1 is applied at the pinned end of an aluminum beam to cause a 90° rotation. A second torque M2 is then applied at a revolute joint in the beam to create an out-of-plane rotation. The joint has a rotational stiffness k, inertial mass J, frictional torque Tf, and locks when a 5° rotation occurs. Determine the position of the beam at the end of each rotation. Figure 179.1 Jointed Beam Problem Sketch Material Properties k = 106 N-m/rad J = 0.5 N-m-sec2/rad Tf = 0.05 N-m 9 E = 70 x 10 N-m ρ = 1 x 10-6 kg/m3 υ = 0.35 Geometric Properties STOPU = 5° = 0.08727 rad STOPU is the COMBIN7 real constant nam...
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