In situ atomic-scale bending tests of twin-structured Ni nanowires were realised using a homemade deformation device. The results showed that the plastic mechanism in depended on stage. At early stages deformation, plasticity was controlled by dislocations interacting with twin boundaries or parallel to them. With increasing strain, both dislocation and face-centred cubic–body-centred tetragona...

Pacaya volcano is a persistently active basaltic cone complex located in the Central American Volcanic Arc in Guatemala. In May of 2010, violent Volcanic Explosivity Index-3 (VEI-3) eruptions caused significant topographic changes to the edifice, including a linear collapse feature 600 m long originating from the summit, the dispersion of ~20 cm of tephra and ash on the cone, the emplacement of...

Motivated by a model that qualitatively captured the response of vertically aligned carbon nanotube (VACNT) pillars in uniaxial compression, we consider the uniaxial tensile response of a class of compressible elastic-viscoplastic solids. In Hutchens et al. [“Analysis of Uniaxial Compression of Vertically Aligned Carbon Nanotubes,” J. Mech. Phys. Solids, 59, pp. 2227–2237 (2011), Erratum 60, 17...

Abstract As demonstrated at Anak Krakatau on December 22 nd , 2018, tsunamis generated by volcanic flank collapse are incompletely understood and can be devastating. Here, we present the first high-resolution characterisation of both subaerial submarine components collapse. Combined Synthetic Aperture Radar data aerial photographs reveal an extensive failure that bounds pre-event deformation pr...

To further study the global seismic behaviour and post-earthquake reparability of RC building frames with proposed self-centring columns low-bond high-strength reinforcements (LBHSRs), incremental dynamic analysis (IDA) five-floor ten-floor frame archetypes under excitation by twenty ground motions (GMs) was performed. First, pushover results indicated that use LBHSR could substantially improve...

Pusa village is located in the karst mountain area of Nayong County, Guizhou Province, China. Laoyingyan rock gently dipping, upper part consists hard formations, and lower made up soft composed 3 coal seams. On August 28, 2017, a massive landslide occurred this area, resulting 82,3000 m3 debris, which resulted significant casualties brought malaise society. In paper, geological conditions long...

In order to study the mechanical properties of heterogeneous core plate wind turbine blade, a modeling method based on displacement field variables is proposed. Firstly, blade was modeled according theory material characteristics. Secondly, three-point bending finite element model solved by display dynamic equation obtain deformation pattern and force-deformation relationship plate. Finally, st...

Abstract It is commonly believed that the permanent deformation introduced by meizoseismal impacts of embankment dams, which impossible to be reinstated and will further endanger safety normal use thereof. In this study, a three-dimensional finite element model dam have been established with equivalent nodal force approach calculate dams under seismic protection. was indicated results accelerat...

Motivated by recent successful synthesis of transition metal dinitride TiN2, the electronic structure and mechanical properties of the discovered TiN2 and other two family members (ZrN2 and HfN2) have been thus fully investigated by using first-principles calculations to explore the possibilities and provide guidance for future experimental efforts. The incompressible nature of these tetragonal...

This paper is concerned with the problem of viscous ow in an elastic tube. Elastic tubes collapse (buckle non-axisymmetrically) when the transmural pressure (internal minus external pressure) falls below a critical value. The tube's large deformation during the buckling leads to a strong interaction between the uid and solid mechanics. In this study, the steady 3D Stokes equations are used to a...