Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Aleksander Zubelewicz"'
Autor:
Aleksander Zubelewicz
Publikováno v:
Forces in Mechanics, Vol 9, Iss , Pp 100121- (2022)
In metals, the plastic flow is initiated when externally-supplied energy exceeds limits imposed by energy barriers, where the word “exceeds” is of interest. The extra energy, called here activation energy, is responsible for the nucleation of dis
Externí odkaz:
https://doaj.org/article/f9e3a68a57dc46e382eb939d34581528
Autor:
Aleksander Zubelewicz
Publikováno v:
Crystals, Vol 13, Iss 5, p 719 (2023)
The tensor representation method (TRM) offers tensorial tools suitable for streamlining the development of constitutive models. The TRM reduces the empiricism of phenomenological descriptions and provides physics-based justifications for the tensoria
Externí odkaz:
https://doaj.org/article/313efffe970e4a9596d6a37da14717bf
Autor:
Aleksander Zubelewicz, John D. Clayton
Publikováno v:
Metals, Vol 13, Iss 3, p 523 (2023)
Since the 1980s, constitutive modeling has steadily migrated from phenomenological descriptions toward approaches that are based on micromechanics considerations. Despite significant efforts, crystal plasticity remains an open field of research. Amon
Externí odkaz:
https://doaj.org/article/b60c8dd8485a4574b64119eff933718e
Autor:
Jaroslaw Szusta, Aleksander Zubelewicz
Publikováno v:
Materials, Vol 15, Iss 10, p 3575 (2022)
This paper presents research on the influence of material anisotropy caused by the technological process of its manufacturing on the plastic properties of the material. In the experimental study, samples cut from an AISI 304L rolled sheet in the roll
Externí odkaz:
https://doaj.org/article/e54e20ede222436f8635b10b4cbbaf1a
Autor:
Aleksander Zubelewicz
Publikováno v:
Crystals, Vol 10, Iss 3, p 212 (2020)
When metal is subjected to extreme strain rates, the conversation of energy to plastic power, the subsequent heat production and the growth of damages may lag behind the rate of loading. The imbalance alters deformation pathways and activates micro-d
Externí odkaz:
https://doaj.org/article/871eb032b1fc41469de58911153f3eea
Autor:
Aleksander Zubelewicz, Darla G. Thompson, Martin Ostoja-Starzewski, Axinte Ionita, Devin Shunk, Matthew W. Lewis, Joe C. Lawson, Sohan Kale, Seid Koric
Publikováno v:
AIP Advances, Vol 3, Iss 1, Pp 012119-012119 (2013)
A mechanisms-based fracture model applicable to a broad class of cemented aggregates and, among them, plastic-bonded explosive (PBX) composites, is presented. The model is calibrated for PBX 9502 using the available experimental data under uniaxial c
Externí odkaz:
https://doaj.org/article/cdeef26c85be4c94b39f099a6b992be8
Autor:
Aleksander Zubelewicz
Publikováno v:
Scientific Reports, Vol 9, Iss 1, Pp 1-7 (2019)
Scientific Reports
Scientific Reports
In thermomechanics, the Taylor–Quinney coefficient specifies fraction of plastic work converted to heat. We challenge the nearly century-long interpretation. We postulate that some fraction of energy delivered to the plastically deformed material i
Publikováno v:
International Journal for Numerical Methods in Engineering. 114:828-860
Autor:
Aleksander Zubelewicz
Publikováno v:
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences. 477:20210234
In textured metals, the elastic directionality reflects the crystallographic organization, while the plastic flow follows the preferential pathways of deformation beyond the elastic limit. In here, the elastic and plastic anisotropies are characteriz
Autor:
Aleksander Zubelewicz
Publikováno v:
Rock Mechanics and Rock Engineering. 50:1667-1672