Within the nonlinear micropolar elasticity we discuss effective dynamic (kinetic) properties of elastic networks with rigid joints. The model a hyperelastic continuum is based on two constitutive relations, i.e. static and kinetic ones. They introduce strain energy density density, respectively. Here consider three-dimensional network made three families fibers connected through massive So are ...

9 Two critical items in the energetic budget of a seismic province are the strain rate, which 10 is measured geodetically on the Earth’s surface, and the yearly number of earthquakes 11 exceeding a given magnitude. Our study is based on one of the most complete and recent 12 seismic catalogues of Italian earthquakes and on the strain rate map implied by a multi13 year velocity solution for perm...

The desire to perform information processing, computation, communication, signal generation and related tasks, while dissipating as little energy possible, has inspired many ideas paradigms. One of the most powerful among them is notion using magnetostrictive nanomagnets primitive units hardware platforms manipulating their magnetizations with electrically generated static or time varying mecha...

Metallic glass and metallic glass matrix composites are excellent candidates for application in cellular structures because of their outstanding plastic yield strengths and their ability to deform plastically prior to fracture. The mechanical performance of metallic-glass and metallic-glass-matrix-composite honeycomb structures are discussed, and their strength and energy absorption capabilitie...

The indentation behaviour of aluminium foams at low velocity (10m/s ∼ 30m/s) was investigated both in experiments and numerical simulation in this paper. A flat-ended indenter was used and the force-displacement history was recorded. The Split Hopkinson Pressure bar was used to obtain the indentation velocity and forces in the dynamic experiments. Because of the low strength of the aluminium fo...

Ballistic performance, at effective strain rates of (10–10 s ), for polymeric dicyclopentadiene (pDCPD) was compared with two epoxy resin/diamine systems with comparable glass transition temperatures. The high rate response was characterized in terms of a projectile penetration kinetic energy, KE50, which describes the projectile kinetic energy at a velocity with a 50% probability of sample pen...

Delamination fracture of a two-dimensional functionally graded multilayered four-point bending beam that exhibits non-linear behaviour of the material is analyzed. The fracture is studied analytically in terms of the strain energy release rate. The beam under consideration has an arbitrary number of layers. Each layer has individual thickness and material properties. A delamination crack is loc...

• Quasi-static strain rate effect was experimentally investigated for modern rebars. Tensile strength increased up to 8% in the range of quasi-static rates. A simple model allows predict stress increase based on given Strain limits comparability mechanical properties quality control. can influence results structural tests with corroded While it has been known decades that even loading, incremen...

Application of impact energy absorption systems in different industries is of special significance. Thin-walled tubes, due to their lightness, high energy absorption capacity, long crushing length and the high ratio of energy absorption to weight, have found ever-increasing application as one of the most effective energy absorption systems. In this research, through  carrying out experimental t...