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Probing the buckling of pressurized spherical shells

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The role of thermally induced soil deformation on the serviceability of energy piles

Lyesse Laloui, Alessandro Francesco Rotta Loria

This paper investigates the impact of the thermally induced deformation of soil on the serviceability mechanical performance (i.e., deformation-related) of energy pile groups. The work is based on the results of a full-scale in-situ test that was performed ...

2016

Electro-mechanical sensing in freestanding monolayered gold nanoparticle membranes

Jürgen Brugger

The electro-mechanical sensing properties of freestanding monolayered membranes of dodecanethiol coated 7 nm gold nanoparticles (NPs) are investigated using AFM force spectroscopy and conductive AFM simultaneously. The electrical resistance of the NP membr ...

Royal Soc Chemistry2016

Effect of Deformation History on Punching Resistance of Reinforced Concrete Slabs

Robert Koppitz

Deformation-dependent punching shear resistance often constitutes the decisive design criterion for reinforced concrete slabs supported by columns. The increasing number of aging structures exhibiting insufficient punching resistance and detailing deficien ...

EPFL2015

Embrittlement induced by the synergistic effects of radiation damage and helium in structural steels

Kun Wang

Ferritic/martensitic steels are candidate materials for fusion reactor structural components, liquid metal containers of spallation neutron sources, and accelerator driven systems, with good radiation resistance and thermo-mechanical properties. However, e ...

EPFL2015

How simple can nonlinear finite element modelling be for structural concrete?

Aurelio Muttoni, Miguel Fernández Ruiz, Galina Argirova

This paper discusses on the required level of simplicity for suitable modelling of structural concrete. Traditional equilibrium-based approaches (as strut-and-tie models) are too coarse in some cases, as they account for the cracking state of concrete in a ...

Inst Ciencias Construccion Eduardo Torroja2014

Finite Volume Particle Method for 3-D Elasto-Plastic Solid Simulation

François Avellan, Ebrahim Jahanbakhsh, Christian Vessaz

Finite Volume Particle Method was successfully used to predict fluid flow behavior for 2-D simulations. In this paper, we present a FVPM which is applicable for 3-D solid mechanics simulations. This method features rectangular top-hat kernels for computing ...

2014

Surface reconstruction from microscopic images in optical lithography

Jean-Philippe Thiran, Virginia Estellers Casas, Maria Gabrani

We propose a shape-from-shading method to reconstruct surfaces of silicon wafers from images of printed circuits taken with scanning electron microscope. Our method combines the physical model of the optical acquisition system with prior knowledge about th ...

Institute of Electrical and Electronics Engineers2014

Microstructures in serpentine samples recovered from deformation experiments performed at high pressure (1-8 GPa), high temperature (150-500 degrees C), and laboratory strain rates (4 10(-4)-10(-6)s(-1)) were studied using transmission electron microscopy ...

Amer Geophysical Union2014

Coiling of elastic rods on rigid substrates

Pedro Miguel Nunes Pereira de Almeida Reis

We investigate the deployment of a thin elastic rod onto a rigid substrate and study the resulting coiling patterns. In our approach, we combine precision model experiments, scaling analyses, and computer simulations toward developing predictive understand ...

2014

Deformation mechanisms in nanocrystalline electrodeposited Ni (26 nm) and Ni-Fe (12 nm) are studied by strain rate sensitivity experiments and in situ mechanical testing during X-ray diffraction. We find a relatively low strength for Ni-Fe, which may be as ...

Pergamon-Elsevier Science Ltd2013