Kinematic Simulation of Three Rollers in Circular Motion Using 2D Planar FE Modeling
Abdulaziz S. Al-Aboodi
Abdulaziz S. Alaboodi, Department, of  Mechanical Engineering, Qassim University, Buraydah, Saudi Arabia.
Manuscript received on March 28, 2014. | Revised Manuscript received on April 16, 2014. | Manuscript published on April 30, 2014. | PP: 368-372  | Volume-3, Issue-4, April 2014. | Retrieval Number:  D3016043414/2013©BEIESP

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Abstract: A method is established for joining a tube to a tube sheet by expanding the tube to the tube sheet. The expansion done using different method such as rolling. The joint integrity is important to ensure the roundness of the structure of the heat exchanger, and to prevent leakage. Many parameters affect the joint integrity such as the initial clearance, wall reduction and material properties. The residual contact stress is the main parameter indicating the strength of the joint. In this paper, the two dimensional planar FE model is established for the tube to tube sheet roller expansion. The planar model is great way for our attempt to understand and analyze the problem. The planar model reveals a realistic motion of the rollers in addition to the exact geometry of the tube sheet. This eliminates the need for the assumption of uniform expansion and tube sheet sleeve diameter sets on the axisymmetric model. That, the ligament dimensional effect will be shown on this model.
Keywords: Kinamatic, Simulation, Finite Element, Rolling, Modeling.