Process Mechanics of Low Plasticity Burnishing of Nitinol Alloy

Fu, C. H.; Guo, Y. B.; McKinney, John E.; Wei, Xiuting

doi:10.1007/s11665-012-0313-1

Cited by 19 publications

(9 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Other similar numerical investigation into this subject can be found in Guagliano and Vergani [8], Choi and Pan [3,9], Majzoobi et al [10], Fu et al [11], Sayahi et al [12], and Klocke et al [13]. These analyses are modeled with a spherical or cylindrical type of roller under indentation or rolling condition.…”

Section: Introductionmentioning

confidence: 74%

“…The bottom surface of the plate is constrained in the loading direction in all steps and this is the only constraint in the plate. The interaction behavior between the roller and the plate is modeled with Coulomb's law, taking 0.05 as the coefficient of friction for the highly lubricated rolling process [11,14]. The cooling function of lubricant and the free-to-roll configuration in the tool design allow for the assumption of isothermal deformation.…”

Section: (5) Recoverymentioning

confidence: 99%

See 1 more Smart Citation

Finite Element Analysis of Residual Stress in Ti-6Al-4V Alloy Plate Induced by Deep Rolling Process under Complex Roller Path

Liou¹,

El-Wardany²

2014

International Journal of Manufacturing Engineering

View full text Add to dashboard Cite

The kinematics of the deep rolling tool, contact stress, and induced residual stress in the near-surface material of a flat Ti-6Al-4V alloy plate are numerically investigated. The deep rolling tool is under multiaxis nonlinear motion in the process. Unlike available deep rolling simulations in the open literature, the roller motion investigated in this study includes penetrative and slightly translational motions. A three-dimensional finite element model with dynamic explicit technique is developed to simulate the instantaneous complex roller motions during the deep rolling process. The initial motion of the rollers followed by the penetration motion to apply the load and perform the deep rolling process, the load releasing, and material recovery steps is sequentially simulated. This model is able to capture the transient characteristics of the kinematics on the roller and contacts between the roller and the plate due to variations of roller motion. The predictions show that the magnitude of roller reaction force in the penetration direction starts to decrease with time when the roller motion changes to the deep rolling step and the residual stress distributions in the near-surface material after the material recovery step varies considerably along the roller path.

show abstract

Section: Introductionmentioning

confidence: 74%

Section: (5) Recoverymentioning

confidence: 99%

Finite Element Analysis of Residual Stress in Ti-6Al-4V Alloy Plate Induced by Deep Rolling Process under Complex Roller Path

Liou¹,

El-Wardany²

2014

International Journal of Manufacturing Engineering

View full text Add to dashboard Cite

show abstract

“…The material constants were based on a curve fitting process between a quasi-static stress strain curve from Split-Hopkinson Pressure Bar tests and the given theoretical model [17] under the assumption that tension and compression curves were symmetric with each other. In previous research, these material constants successfully captured the superelastic-plastic mechanical behavior of NiTi [18]. Fig.…”

Section: Modeling Of Nitinol Superelasticity and Shape Memorymentioning

confidence: 89%

Finite element simulation and experimental validation of pulsed laser cutting of nitinol

Sealy

Guo

et al. 2015

Journal of Manufacturing Processes

View full text Add to dashboard Cite

“…They studied the effects of important parameters like burnishing force, velocity, ball diameter, and the number of LPB paths on the surface of specimens. Fu and coworkers developed a 3‐D finite element simulation to incorporate the super elastic mechanical behavior of SE508 Nitinol alloy. They discussed parameters such as contact stresses, strain profiles, and induced residual stresses over the burnishing mechanism.…”

Section: Introductionmentioning

confidence: 99%

“…; FSP, Friction-stir-processing; LPB, Low plasticity burnishing; HAZ, Heat affected zone to improve the fatigue properties of the components of gas turbine engines, which reduced tensile stresses of the surface. 1 Shortly, after the LPB process has received a high attention among investigators [2][3][4][5][6] mainly due to compressive stresses generated deeper under sample surface resulting in better mechanical performance. This process generates sufficient layers of compressive residual stress at which the minimum cold work hardening is required.…”

Section: Introductionmentioning

confidence: 99%

The influence of low‐plasticity burnishing process on the fatigue life of friction‐stir‐processed Al 7075‐T6 samples

Hassanifard

Mousavi

Varvani‐Farahani

2018

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

The effects of low‐plasticity burnishing (LPB) on the fatigue life of friction‐stir‐processed (FSP) Al 7075‐T6 plates were examined experimentally and numerically. Aluminum samples were taken from plates to test fatigue response in the presence of heat‐affected zone (HAZ) at different loading magnitudes. Finite element method was employed to numerically evaluate fatigue life of FSPed samples by means of the Smith–Watson–Topper (SWT) model. Through numerical analysis, the FSP and its cooling procedure were modelled on the basis of the arbitrary Lagrangian–Eulerian technique, and then, the effect of the LPB to assess fatigue response of samples was examined. Aluminum samples undergoing friction‐stir process presented lower‐fatigue life as stresses were highly concentrated within FSP regions. Involvement of LPB regained fatigue durability through compressive residual stress induced on the aluminum samples. The higher applied force over the LPB promoted compressive residual stress on the sample surface and improved fatigue life of samples. The predicted life results were found twice more in magnitude than those of experimentally obtained.

show abstract

Process Mechanics of Low Plasticity Burnishing of Nitinol Alloy

Cited by 19 publications

References 23 publications

Finite Element Analysis of Residual Stress in Ti-6Al-4V Alloy Plate Induced by Deep Rolling Process under Complex Roller Path

Finite Element Analysis of Residual Stress in Ti-6Al-4V Alloy Plate Induced by Deep Rolling Process under Complex Roller Path

Finite element simulation and experimental validation of pulsed laser cutting of nitinol

The influence of low‐plasticity burnishing process on the fatigue life of friction‐stir‐processed Al 7075‐T6 samples

Contact Info

Product

Resources

About