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Paper Information

Journal:   JOURNAL OF SOLID AND FLUID MECHANICS   2017 , Volume 7 , Number 3 ; Page(s) 17 To 28.
 
Paper: 

EFFECTS OF INITIAL TWIST ON CRITICAL BUCKLING LOAD AND FREQUENCY RESPONSE OF SMA TUBES

 
 
Author(s):  KHORRAMABADI R., REZAEEPAZHAND J.*
 
* FERDOWSI UNIV., MASHHAD, IRAN
 
Abstract: 

Shape Memory Alloys (SMAs) are a group of alloys, which have distinct and superior properties compared to conventional alloys. They demonstrate two particular non- linear stress- strain behavior, Shape Memory Effect and Psedoelasticity (Superelasticity). In this paper, we have studied transverse vibration and buckling of pretwisted cantilever SMA tubes subjected to the phase change. All analyzes were done using the ABAQUS finite element software. Since the modeling of SMA is not available in ABAQUS software, the UMAT subroutine in the software is used to implement the three SMA models, Boyd & Lagoudas, Liang & Rogers and Tanaka, to FE analysis. Preparing a user material subroutine enables the designer to analyze any structure that made of shape memory alloys in the software. The effect of internal and external diameter of the constant weight tube on phase change delay, critical buckling load and natural frequency is discussed.

 
Keyword(s): TORSION, FREE VIBRATION, BUCKLING LOAD, SHAPE MEMORY ALLOYS, UMAT SUBROUTINE
 
References: 
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