Study on Crack Tip Field of Shape Memory Alloy Plate

2013 ◽  
Vol 19 (8) ◽  
pp. 2300-2304
Author(s):  
Bo Zhou ◽  
Yanyan Hou ◽  
Bin Hu
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Crack Tip ◽  
Crack Tip Field ◽  
Alloy Plate

Study on Crack Tip Field of Shape Memory Alloy Board under Torsion Load

2013 ◽  
Vol 663 ◽  
pp. 397-402
Author(s):  
Bo Zhou ◽  
Tai Yue Yin ◽  
Shi Feng Xue
Keyword(s):  
Phase Transition ◽  
Field Equation ◽  
Shape Memory Alloy ◽  
Stress Field ◽  
Shape Memory ◽  
Crack Tip ◽  
Martensitic Phase ◽  
Mechanical Behaviors ◽  
Crack Tip Field ◽  
Martensitic Phase Transition

This paper focuses on the thermo-mechanical behaviors of the shape memory alloy board with a crack and under the torsion load. A stress field equation from mechanics of elasticity is used to describe the stress distribution around the crack tip in the shape memory alloy board. A martensitic phase transition equation is supposed to predict the martensitic phase transition behaviors of the field near the crack tip in the shape memory alloy board. The martensitic phase transition zones near the crack tip in the shape memory alloy board under the torsion load are numerically described based on the stress field equation and martensitic phase transition equation at various temperatures. Results show that the stress field equation and martensitic phase transition equation can predict the thermo-mechanical behaviors of the shape memory alloy board with a crack and under the torsion load effectively.

Study on Crack Tip Field of Mode I of Shape Memory Alloy in Plane Strain State

2012 ◽  
Vol 457-458 ◽  
pp. 744-747
Author(s):  
Bo Zhou ◽  
Yan Yan Hou ◽  
Jun Lv
Keyword(s):  
Phase Transformation ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Crack Tip ◽  
Complex Stress ◽  
Complex Stress State ◽  
Mode I ◽  
Crack Tip Field ◽  
Linear Elastic ◽  
Elastic Mechanics

This paper focuses on the thermo-mechanical behaviors of a shape memory alloy (SMA) plate with a crack of mode I. A phase transformation equation is supposed to express the phase transformation behaviors of SMA under complex stress state. The stress field near the crack tip is described based on linear elastic mechanics. The martensitic phase transformation zones near the crack tip at various temperatures are numerically determined.

Finite Element Simulation on Mechanical Behaviors near Crack-Tip in Shape Memory Alloy

2013 ◽  
Vol 405-408 ◽  
pp. 2576-2579
Author(s):  
Bo Zhou ◽  
Jun Lv ◽  
Dong Xue Wang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Finite Element Simulation ◽  
Crack Tip ◽  
Simulation Method ◽  
Mechanical Behaviors ◽  
Alloy Plate ◽  
Element Simulation

The mechanical behaviors of super-elastic shape memory alloy are formulated based on Auricchios constitutive model. The finite element simulation method for the mechanical behaviors of super-elastic shape memory alloy using the software of ANSYS is introduced. The mechanical behaviors near crack-tip in a shape memory alloy plate with one inclining crack are numerically simulated by finite element method. Results show that the software of ANSYS can simulate the mechanical behaviors of shape memory alloy with crack effectively.

Study on Crack Tip Field of Shape Memory Alloy Board under Bending Load

2012 ◽  
Vol 457-458 ◽  
pp. 409-412
Author(s):  
Bo Zhou ◽  
Tai Yue Yin ◽  
Xu Kun Li
Keyword(s):  
Phase Transformation ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Crack Tip ◽  
Transformation Model ◽  
Crack Tip Field ◽  
Transformation Zone ◽  
Linear Elastic ◽  
Bending Load ◽  
Elastic Mechanics

This paper focuses on the thermo-mechanical behaviors of shape memory alloy (SMA) board with a crack subjected to bending load. The stress field near the crack tip of SMA board is described according to the solution of linear elastic mechanics. The phase transformation behaviors of SMA board are formulated based on Zhou’s one-dimensional phase transformation model. The phase transformation zone equation is derived to describe the phase transformation zone near the crack tip.

Experiments and modeling of variable camber guide vane embedded with shape memory alloy plate

2021 ◽  
Author(s):  
Tiegang Chen ◽  
Jun Jiang ◽  
Qiang Zhang ◽  
Hanlin Wang ◽  
X Y Zhang
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Guide Vane ◽  
Alloy Plate

Investigation on Stress Field near Crack-Tip of Mode I in Shape Memory Alloy

2011 ◽  
Vol 142 ◽  
pp. 138-141 ◽  
Author(s):  
Bo Zhou ◽  
Xiao Gang Guo ◽  
Gang Ling Hou ◽  
Xu Kun Li
Keyword(s):  
Phase Transformation ◽  
Fracture Mechanics ◽  
Shape Memory Alloy ◽  
Stress Field ◽  
Shape Memory ◽  
Crack Tip ◽  
Complex Stress ◽  
Complex Stress State ◽  
Mode I ◽  
Transformation Equation

In this paper a phase transformation equation is supposed to describe the phase transformation behaviors of the shape memory alloy (SMA) under complex stress state. The stress field near crack-tip of mode I in SMA at various temperatures is investigated based on the supposed phase transformation equation and linear elastic fracture mechanics. Results show both the martensite region and the mixed region of martensite and austenite near the crack-tip become larger with the decrease of temperature. The fracture mechanics behaviors of SMA are much influenced by the temperature.

Characteristics of Ti50-Pd(50-x)-W(x) High Temperature Shape Memory Alloy

2007 ◽  
Vol 539-543 ◽  
pp. 3190-3194 ◽  
Author(s):  
Hiroyuki Nakayama ◽  
Minoru Taya
Keyword(s):  
High Temperature ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Cooling Curve ◽  
Bending Test ◽  
Rolled Plate ◽  
Electrical Resistivity Measurement ◽  
Transformation Behavior ◽  
Alloy Plate ◽  
Hot Rolled

Characteristics of high temperature shape memory alloy in Ti50-Pd(50-x)-W(x) at%, x = 3 and 5 system has been examined. The prepared ingot was homogenized at 1273 K for 86.4 ks followed by water quenched. The homogenized samples were hot-rolled at 1273 K to a plate shape with thickness of 3.5 mm and 1.0 mm. Transformation temperatures were determined by 4-probe electrical resistivity measurement. The transformation behavior in the both samples exhibited similar trend. The first heating curve showed no significant step. In contrast, the first cooling curve exhibited clear step due to martensitic transformation. After second cycle, the transformation behavior was stabilized, thus the clear steps in the cooling and heating curves were seen. Stressstrain curve of hot-rolled plate with 3.5 mm was examined by compression in Ti50-Pd47-W3 at% alloys. The sample exhibited 1 % shape memory effect. By bending test, nearly perfect SME effect was observed in hot rolled Ti50-Pd45-W5 at% alloy plate with thickness of 1 mm.

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