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| Post-buckling analysis of tubes based on beam-to-beam contact theory |
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WANG Zunce1, CAO Mengyu1, XU Dekui2, WEN Houzhen1, XU Yan1, CHEN Ming1, LÜ Fengxia3
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(1.Mechanical Scientific and Engineering College of Northeast Petroleum University, Daqing 163318,China;2. College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology,Beijing 100124,China;3.Mechanical Engineering College of Changzhou University,Changzhou 213016,China)
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| Abstract: |
| To explore the buckling form of the straight long tube under complicated conditions, the buckling analysis based on the beam-to-beam contact theory is carried out. The beam is discretized according to the beam-to-beam contact theory in consideration of shear and bending deformation. The finite element method(FEM) model considering the variable section and frictional contact is built, where the tube-to-tube contact element is used. By using this method, the FEM model concerned with the layered production 's actual working conditions is presented. The result turns out that the tube 's buckling form under the complex condition, is multiple and not equidistant. Moreover, the buckling form with friction is not the standard sine type or the spiral configuration, and the reliability of these results has been proved by the magnetic positioning data. |
| Key words: tube tube-to-tube contact element beam-to-beam contact theory frictional contact multiple buckling magnetic positioning subsurface tool |
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