Results 81 to 90 of about 44,024 (283)

MATHEMATICAL MODEL OF RR-TYPE MICROMECHANICAL GYRO CAPACITIVE COMB-TYPE SENSORS WITH ACCOUNT FOR VIBRATIONS [PDF]

Научно-технический вестник информационных технологий, механики и оптики, 2016
Subject of Research.The reasons for subharmonic resonances in RR-type micromechanical gyro output under linear vibrations are investigated. In ideal case, this type of gyro should be insensitive to this kind of impact due to primary and secondary angular
M. I. Evstifeev, D. P. Eliseev
doaj   +1 more source

One‐Dimensional Materials Supported in Two‐Dimensional Van der Waals Metal–Organic Frameworks with Optical Anisotropy Switching via Twist‐Engineering

Advanced Materials, EarlyView.
We introduce a molecular strategy to assemble one‐dimensional (1D) materials into two‐dimensional (2D) van der Waals metal–organic frameworks (MOFs). Crystals of [FeX(pzX)(bpy)] (X = Cl, F) form anisotropic 2D layers that can be mechanically exfoliated into thin sheets.
Eleni C. Mazarakioti, Carla Boix‐Constant, Iván Gómez‐Muñoz, Diego López‐Alcalá, Sergio Revuelta, Marco Ballabio, Vasileios Balos, José J. Baldoví, Enrique Cánovas, Josep Canet‐Ferrer, Guillermo Mínguez Espallargas, Samuel Mañas‐Valero, Eugenio Coronado   +12 more
wiley   +1 more source

Modelling Localisation and Spatial Scaling of Constitutive Behaviour: a Kinematically Enriched Continuum Approach

, 2014
It is well known that classical constitutive models fail to capture the post-peak material behaviour, due to localisation of deformation. In such cases the concept of Representative Volume Element (RVE) on which classical continuum models rest ceases to ...
Bažant, Borja, Chen, Nguyen, Nguyen, Oliver, Pijaudier-Cabot, Samaniego, Sulsky   +8 more
core   +1 more source

Experiment and theory in the Casimir effect [PDF]

, 2006
Casimir effect is the attractive force which acts between two plane parallel, closely spaced, uncharged, metallic plates in vacuum. This phenomenon was predicted theoretically in 1948 and reliably investigated experimentally only in recent years. In fact,
Casimir H. B.G., Chen F., Fischbach E., G. L. Klimchitskaya, Landau L. D., Lifshitz E. M., Mahanty J., Milonni P. W., Mostepanenko V. M., Roy A., V. M. Mostepanenko   +10 more
core   +2 more sources

4D‐Printed Spin Crossover Metamaterials with Giant Programmable Positive or Negative Thermal Expansion

Advanced Materials, EarlyView.
Spin crossover composite filaments are implemented for the rational design of 4D‐printed mechanical metamaterials. The obtained bi‐material structures guided by a theoretical analysis based on analytical calculations and Finite Element Analysis simulations exhibit giant programmable positive or negative deformation with coefficients of thermal ...
Adelais Trapali, Yuteng Zhang, Seyed Ehsan Alavi, Nagham Mawassy, Raja Zulkarnain, Gábor Molnár, Lionel Salmon, Azzedine Bousseksou   +7 more
wiley   +1 more source

Calibration of DEM direct shear box test model with hulled millet and viscoelastic contact model using a genetic algorithm

Smart Agricultural Technology
: One of the principal challenges currently facing those who use simulations based on the discrete element method is to calibrate the micromechanical parameters of a contact model with the necessary degree of accuracy.
Dániel Horváth, Bence Szabó, Kornél Tamás   +2 more
doaj   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

Experimental and computational investigation of tensile and flexural properties of polylactic acid filled with boron nitride nanoplatelets

Fracture and Structural Integrity
Our research described in this paper focused on fabricating and characterising polylactic acid (PLA) composites reinforced with randomly dispersed boron nitride nanoplatelets (BNNP).
Harishbabu Sundarasetty, Santosh Kumar Sahu   +1 more
doaj   +1 more source

Micromechanical modelling of ferroelectrics

Current Opinion in Solid State and Materials Science, 2005
The wide range of applications of ferroelectrics is matched by an equally wide range of modelling approaches. This article reviews recent micromechanical models of ferroelectric switching. The development of models is traced, from discrete switching models that neglect grain-to-grain interaction, through to incremental switching models that account for
openaire   +1 more source

Theoretical and numerical investigation on internal instability phenomena in composite materials [PDF]

, 2004
Instability phenomena occurring in the microstructure of composite materials are investigated. To this aim, a complete description of the mechanical behavior of bi-material interfaces in composite materials requires the definition of both a cohesive ...
Carpinteri, Alberto, Paggi, Marco
core