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| 3D FINITE ELEMENT SIMULATION OF PULL–OUT FORCE OF TiNiFe SHAPE MEMORY PIPE COUPLING WITH INNER CONVEX |
| ZHANG Huibo, JIN Wei, YANG Rui |
| Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016 |
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Cite this article:
ZHANG Huibo JIN Wei YANG Rui. 3D FINITE ELEMENT SIMULATION OF PULL–OUT FORCE OF TiNiFe SHAPE MEMORY PIPE COUPLING WITH INNER CONVEX. Acta Metall Sin, 2012, 48(12): 1520-1524.
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Abstract Dimension design is a key aspect for shape memory pipe coupling, and determines the connecting strength of the connecting unit. Numerical simulation provides a theoretical basis for dimension design. In this paper, a three–dimensional constitutive model was developed to simulate the deformation and recovery process of TiNiFe shape memory pipe coupling. Finite element method is applied to simulate the stress distribution and pull–out force of the connecting units. Properties of TiNiFe alloy used in the simulation are measured from experiments. The influences of the inner convex and its height on the pull–out force are investigated. The simulated results reveal that the inner convex increases the pull–out force of the connecting units, which increases linearly with the height of the inner convex within the scope of simulations. The experimental results are in good agreement with the simulated pull–out forces with a deviation of less than 4%.
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Received: 23 August 2012
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