Results 1 to 10 of about 1,220,037 (212)

Constitutive modeling of cortical bone considering anisotropic inelasticity and damage evolution

open access: yesMechanical Engineering Journal, 2017
Researchers have conducted finite element (FE) analyses with human models to predict injuries due to traffic accidents or falling. In most of their analyses, cortical bone was simply modeled as a general isotropic elastoplastic material. In this study, a
Noritoshi ATSUMI   +3 more
doaj   +1 more source

Damage-imperfection indicators for the assessment of multi-leaf masonry walls under different conditions [PDF]

open access: yes, 2018
The complexity of multi-leaf masonry walls suggests further researches on the dy- namic behaviour mainly characterized by incoherent response between the different layers.
Aldreghetti, Ivano   +6 more
core  

INITIAL PRODUCTION OF DEFECTS IN ALKALI-HALIDES - F AND H CENTER PRODUCTION BY NON-RADIATIVE DECAY OF SELF-TRAPPED EXCITON [PDF]

open access: yes, 1977
Radiation damage in KCl can be produced by the decay of a self-trapped exciton into an F centre and an H centre. The authors present calculations of the energies of the states involved for various stages in the evolution of the damage.
HARKER, AH, ITOH, N, STONEHAM, AM
core  

3D orthogonal woven carbon/carbon composites: micromechanical modeling and damage analysis

open access: yesMaterials Research Express
This study develops a progressive damage model for three-dimensional orthogonal woven car-bon/carbon composites using a micromechanical approach. A Representative Volume Element (RVE) model with periodic boundary conditions is constructed using the ...
Qin Gong, Junhong Chen, Xicheng Huang
doaj   +1 more source

Experimental Study on the Mechanical Properties of Rock–Concrete Composite Specimens under Cyclic Loading

open access: yesBuildings
The foundations of bridges and other tall buildings are often subjected to cyclic loads. Therefore, it is essential to investigate the mechanical properties of rock–concrete composite foundations under cyclic loads. In this paper, uniaxial cyclic loading
Hongjun Li   +3 more
doaj   +1 more source

Calculation of the substitutional fraction of ion-implanted He in an Fe target

open access: yes, 2010
Ion-implantation is a useful technique to study irradiation damage in nuclear materials. To study He effects in nuclear fusion conditions, He is co-implanted with damage ions to reproduce the correct He/dpa ratios in the desired or available depth range.
Fu   +23 more
core   +2 more sources

Complexity of the behaviour of asphalt materials in cyclic testing [PDF]

open access: yes, 2017
This paper compares the results obtained in two types of cyclic tension-compression tests, a time sweep test, constant strain amplitude, and a strain sweep test, increasing strain amplitude every 5000 cycles, called EBADE (standing for the Spanish words ...
Botella Nieto, Ramón   +4 more
core   +2 more sources

Microstructural characterization and simulation of damage for geared sheet components [PDF]

open access: yes, 2017
The evolution of damage in geared components manufactured from steel sheets was investigated, to analyse the influence of damage caused by the sheet-bulk-metal forming.
Clausmeyer, T.   +7 more
core   +2 more sources

Evolution law for anisotropic damage

open access: yes, 1999
Summary: We give a formulation for anisotropic damage in the framework of the principle of strain equivalence. The damage variable is still related to the surface density of microcracks and microvoids, and, as its evolution is governed by the plastic strain, it is represented by a second-order tensor and is orthotropic.
Lemaitre, Jean   +2 more
openaire   +2 more sources

Space Shuttle Lightning Protection [PDF]

open access: yes, 1979
The technology for lightning protection of even the most advanced spacecraft is available and can be applied through cost-effective hardware designs and design-verification techniques.
Blount, R. L.   +2 more
core   +1 more source

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