Results 161 to 170 of about 6,051,770 (231)

Micromechanical Theory for pH-Dependent Polyelectrolyte Multilayer Capsule Swelling

Macromolecules, 2006
Hollow polyelectrolyte multilayer capsules made of ionizable segments (e.g., carboxylic acid, amine, pyridine) have an equilibrium size that is independent of salt concentration and pH in a wide pH range but swell to a larger size at lower and higher pH.
Biesheuvel, P., Mauser, T., Sukhorukov, G., Möhwald, H.   +3 more
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Micromechanics theory of fatigue crack initiation and propagation

Engineering Fracture Mechanics, 1980
Abstract This paper is concerned with the theoretical formulation of models describing the fatigue crack initiation and propagation processes in polycrystalline solids on the basis of their being nondeterministic. The crack initiation is established by using a technique based on the interference of Gaussian distribution functions, obtained from basic
H. Ghonem, J.W. Provan
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A micromechanic theory of chopped-fibre-reinforced materials

Fibre Science and Technology, 1980
The slender-body approximation is applied to a dilute suspension of elastic chopped fibres in an elastic matrix. An explicit constitutive equation is derived for any arbitrary distribution of fibres in the underformed configuration. Some typical deformation fields are worked out in detail for three cases of interest: the aligned-fibre, the completely ...
N. Phan-Thien, R.R. Huilgol
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Micromechanics of Molecular Motors: Experiments and Theory

2004
Motor proteins are examples of machines working at the molecular, i.e. nanometer scale. How exactly such machines function in a noisy environment has been a matter of a debate since the discovery of the myosin cross-bridge in muscle sarcomeres by A.F. Huxley [31].
Andrea Parmeggiani, Christoph F. Schmidt
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Analysis of metal-matrix composite structures—I. Micromechanics constitutive theory

Computers & Structures, 1991
Abstract The nonlinear behavior of continuous-fiber-reinforced metal-matrix composite structures is examined using a micromechanical constitutive theory. Effective lamina constitutive relations based on the Aboudi micromechanics theory are presented.
Arenburg, R. T., Reddy, J. N.
openaire   +1 more source

Micromechanical strength theory of hybrid composites

Advanced Composite Materials, 1991
Composite materials containing two or more types of fibers in a common matrix are called hybrid composites. Hybrid composites are attractive because tailoring of materials is easier than non-hybrid composites, and they are now widely used including aircraft, sports goods, and so on.
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Critical Thickness Theory Applied to Micromechanical Testing

Advanced Engineering Materials, 2012
AbstractCritical thickness theory for the plastic deformation of small stressed volumes is reviewed, with particular emphasis on its application to the size effect in common micromechanical testing methods, foil flexure, wire torsion, and compression and tension of micropillars and wires.
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Deterministic Material-Based Averaging Theory Model of Collagen Gel Micromechanics

Journal of Biomechanical Engineering, 2006
Mechanics of collagen gels, like that of many tissues, is governed by events occurring on a length scale much smaller than the functional scale of the material. To deal with the challenge of incorporating deterministic micromechanics into a continuous macroscopic model, we have developed an averaging-theory-based modeling framework for collagen gels ...
Preethi L, Chandran, Victor H, Barocas
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A Composite Micromechanical Model for Connective Tissues: Part I—Theory

Journal of Biomechanical Engineering, 1992
A micromechanical model has been developed to study and predict the mechanical behavior of fibrous soft tissues. The model uses the theorems of least work and minimum potential energy to predict upper and lower bounds on material behavior based on the structure and properties of tissue components.
H K, Ault, A H, Hoffman
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Multi-level homogenization for the prediction of the mechanical properties of ultra-high-performance concrete

Construction and Building Materials, 2019
Ultra-high-performance concrete (UHPC), a multi-level cementitious composite that has properties influenced by constituents existing at different length scales, requires the combination of different modeling strategies to capture and understand its ...
B. F. Haile, D. Jin, Beomjoo Yang, S. Park, H. Lee   +4 more
semanticscholar   +1 more source