Zobrazeno 1 - 10
of 156
pro vyhledávání: '"Ionescu, Ioan"'
Publikováno v:
Comptes Rendus. Géoscience, Vol , Iss , Pp 1-21 (2023)
The aim of this paper is to test a simple damage model of a cohesive granular medium to study the relationship between the damage and velocity of elastic waves. Our numerical experiments of edometric compression show that the microscopic deformation
Externí odkaz:
https://doaj.org/article/4975ed75375c4559a0494e40427e2854
We study the transition from cohesive to noncohesive granular states of synthetic rocks under oedometric loading, combining simultaneous measurements of ultrasound velocity and acoustic emissions. Our samples are agglomerates made of glass beads bond
Externí odkaz:
http://arxiv.org/abs/2310.16615
Compression experiments are widely used to study the mechanical properties of materials at micro- and nanoscale. However, the conventional engineering stress measurement method used in these experiments neglects to account for the alterations in the
Externí odkaz:
http://arxiv.org/abs/2310.06476
Autor:
Danescu, Alexandre, Regreny, Philippe, Cremillieu, Pierre, Leclercq, Jean-Louis, Ionescu, Ioan R.
The paper deals with the fabrication of nano-shells from pre-stressed nano-plates release. Due to geometrical and technological restrictions we have to cover a given surface with three-dimensional thin ribbons. We discuss the key role of the geodesic
Externí odkaz:
http://arxiv.org/abs/2111.11253
Autor:
Danescu, Alexandre, Ionescu, Ioan R.
In this paper we address the following design problem: what is the shape of a plate and the associated pre-stress that relaxes toward a given three-dimensional shell? As isometric transformations conserve the gaussian curvature, three-dimensional non
Externí odkaz:
http://arxiv.org/abs/2111.10373
Autor:
Salman, Oguz Umut, Ionescu, Ioan R.
The mechanical response of almost pure single-crystal micro-pillars under compression exhibits a highly localized behavior that can endanger the structural stability of a sample. Recent experiments revealed that the mechanical response of a crystal i
Externí odkaz:
http://arxiv.org/abs/2005.04510
All phases of matter, solid, liquid or gas, present some excess energy, compared to their bulk, at their interfaces with other materials. This excess of energy, known as the surface energy, is a fundamental property of matter and is involved in virtu
Externí odkaz:
http://arxiv.org/abs/1806.07701
Autor:
Danescu, Alexandre, Ionescu, Ioan R.
Publikováno v:
In European Journal of Mechanics / A Solids September-October 2022 95
Autor:
Salman, Og̃uz Umut, Ionescu, Ioan R.
Publikováno v:
In Mechanics Research Communications June 2021 114