Negative Stiffness Demonstrated by NiAl Nanofilms

• Autorzy: Babicheva R. I. , Bukreeva K. A. , Dmitriev S. V. , Mulyukov R. R. , Zhou K.
• Języki publikacji: EN

Abstrakty

EN

This paper studies the uniaxial strain control tension of NiAl nanofilms via molecular dynamics simulations. The nanofilm deforms elastically until fracture at tensile strain is as large as 37%. The stress-strain curve has a range where tensile deformation develops at decreasing tensile stress, thus indicating negative stiffness. Such deformation is thermodynamically unstable and the nanofilm splits into domains with two different values of elastic strain. Deformation within the unstable range is controlled by motion of the domain walls, resulting in the domains with larger strain grow at the expense of the domains with smaller strain.

Słowa kluczowe

EN

negative stiffness; NiAl nanofilm; molecular dynamics; intermetallic compound

• Wydawca: Institute of Bioorganic Chemistry Scientific Publishers OWN, Polish Academy of Sciences
• Czasopismo: Computational Methods in Science and Technology
• Rocznik: 2013
• Tom: Vol. 19, No. 3
• Strony: 127--135
• Opis fizyczny: Bibliogr. 50 poz., rys.

Twórcy

autor

Babicheva R. I.

• School of Mechanical and Aerospace Engineering, Nanyang Technological University 50 Nanyang Avenue, Singapore 639798, Singapore

autor

Bukreeva K. A.

• 2Institute for Metals Superplasticity Problems, Russian Academy of Sciences 39 Khalturina St., Ufa 450001, Russia

autor

Dmitriev S. V.

• 2Institute for Metals Superplasticity Problems, Russian Academy of Sciences 39 Khalturina St., Ufa 450001, Russia

autor

Mulyukov R. R.

• 2Institute for Metals Superplasticity Problems, Russian Academy of Sciences 39 Khalturina St., Ufa 450001, Russia

autor

Zhou K.

• School of Mechanical and Aerospace Engineering, Nanyang Technological University 50 Nanyang Avenue, Singapore 639798, Singapore

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