Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Sivom Manchiraju"'
Publikováno v:
International Journal of Fatigue. 168:107457
Publikováno v:
CIRP Annals. 69:85-88
Phase transformation and shape memory response of NiTi alloys are sensitive to the variation of temperature and stress. Thus, the phase transformation of NiTi alloys becomes more complex during machining process. This study presents findings from a m
Publikováno v:
International Journal of Plasticity. 80:1-18
The coupling between phase transformations and plasticity in shape memory alloys (SMAs) is studied by developing a finite element framework in which the constitutive relation captures both phase transformations at the martensite correspondence varian
Publikováno v:
Procedia CIRP. 31:557-562
NiTi shape memory alloys have gained increased interest in various industries, including biomedical and aerospace applications due to their unique properties such as shape memory effect and superelasticity. Martensitic phase transformation in NiTi si
Autor:
Othmane Benafan, Raj Vaidyanathan, Sivom Manchiraju, D. J. Gaydosh, Peter M. Anderson, Ronald D. Noebe
Publikováno v:
Acta Materialia. 59:5238-5249
A recent microstructure-based FEM model that couples crystal-based plasticity, the B2 MB190 phase transformation and anisotropic elasticity at the grain scale is calibrated to recent data for polycrystalline NiTi (49.9 at.% Ni). Inputs include anisot
Autor:
Sivom Manchiraju, Peter M. Anderson
Publikováno v:
International Journal of Plasticity. 26:1508-1526
A microstructural finite element (MFE) model is developed to capture the interaction between martensitic transformations and plasticity in NiTi shape memory alloys (SMAs). The interaction is modeled through the grain-to-grain redistribution of stress
Autor:
Peter M. Anderson, Michael D. Uchic, Sivom Manchiraju, D.M. Norfleet, Peter Maxwell Sarosi, Martin F.-X. Wagner, Michael J. Mills
Publikováno v:
Acta Materialia. 57:3549-3561
[1 1 0]-oriented microcrystals of solutionized 50.7 at.% Ni–Ti were prepared by focused ion beam machining and then tested in compression to investigate the stress-induced B2-to-B19′ transformation in the pseudoelastic regime. The compression res
Publikováno v:
Journal of Computer-Aided Materials Design. 14:47-61
A dual-time scale finite element model is developed in this paper for simulating cyclic deformation in a Titanium alloy Ti-6242. The material is characterized by crystal plasticity constitutive relations. Modeling cyclic deformation using conventiona
Publikováno v:
The Journal of Strain Analysis for Engineering Design. 42:183-200
A dual-time-scale finite element model is developed in this paper for simulating cyclic deformation in polycrystalline alloys. The material is characterized by crystal plasticity constitutive relations. The finite element formulation of the initial b
Publikováno v:
MRS Proceedings. 1295
A microstructure-based FEM model that couples crystal plasticity, crystallographic descriptions of the B2-B19′ martensitic phase transformation, and anisotropic elasticity is used to simulate thermal cycling and isothermal deformation in polycrysta