An integration time step of 01 hr is assumed over the

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Unformatted text preview: h Edition, McGraw-Hill Book Co., Inc., New York, NY, 1962, pg. 616, problem 15.13. Analysis Type(s): Static Analysis (ANTYPE = 0) Element Type(s): Structural Mass Elements (MASS21) Input Listing: vm131.dat Test Case Determine the acceleration at the tip P of a crane boom that has a constant angular velocity cab rotation (Ω) while being raised with a constant angular velocity (ω). Figure 131.1 Rotating Crane Boom Problem Sketch Geometric Properties d = 34.64 ft h = 20 ft Loading Ω = 0.3 rad/sec ω = 0.5 rad/sec Analysis Assumptions and Modeling Notes Consider X', Y', Z' as the fixed reference coordinate system. The global Cartesian coordinate system (XYZ) is taken as attached to the cab which rotates at an angular velocity of Ω about the Y'-axis of the reference coordinate system. The boom angular velocity ω is applied about the global Z-axis. The Coriolis effect due to the rotation of the cab is modeled by putting a mass of 1 lb-sec2/ft (without rotary inertia) at point P, and cons...
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