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Open AccessArticle

Finite Element Analysis for the Self-Loosening Behavior of the Bolted Joint with a Superelastic Shape Memory Alloy

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Key Laboratory of Electronic Equipment Structural Design, Xidian University, Xi’an 710071, China
2
State Key Laboratory for Manufacturing System, Xi’an Jiaotong University, Xi’an 710049, China
3
State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116023, China
*
Author to whom correspondence should be addressed.
Materials 2018, 11(9), 1592; https://doi.org/10.3390/ma11091592
Received: 7 August 2018 / Revised: 27 August 2018 / Accepted: 28 August 2018 / Published: 2 September 2018
A macroscopic constitutive model is proposed in this research to reproduce the uniaxial transition ratcheting behaviors of the superelastic shape memory alloy (SMA) undergoing cyclic loading, based on the cosine-type phase transition equation with the initial martensite evolution coefficient that provides the predictive residual martensite accumulation evolution and the nonlinear feature of hysteresis loop. The calculated results are compared with the experimental results to show the validity of the present computational procedure in transition ratcheting. Finite element implementation for the self-loosening behavior of the superelastic SMA bolt is then carried out based on the proposed constitutive model to analyze the curves of stress-strain responses on the bolt bar, clamping force reduction law, dissipation energy change law of the bolted joint for different external loading cases, and preload force of the bolt. View Full-Text
Keywords: shape memory alloys; finite element modeling; ratcheting; self-loosening of bolt shape memory alloys; finite element modeling; ratcheting; self-loosening of bolt
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MDPI and ACS Style

Jiang, X.; Huang, J.; Wang, Y.; Li, B.; Du, J.; Hao, P. Finite Element Analysis for the Self-Loosening Behavior of the Bolted Joint with a Superelastic Shape Memory Alloy. Materials 2018, 11, 1592.

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