The study on the influence of early age damage concrete its long-term strength development is great importance. In this work, 102 cubes with and without supplementary cementitious materials (SCMs) were prepared. pre-loading loading degrees 20%, 50%, 80% corresponding compressive at 3-, 7-, 14-, 28 d was applied to samples. Then, samples further cured 270 d, tested by uniaxial compression test. ...

A peristaltically actuated device, PADeMIS, composed of silicone rubber (SR) is under development for use in minimally invasive surgery. During locomotion, the device will be subject to a few thousand load changes involving varying, sometimes high, strains. The design is being optimised by finite element analysis, for which a constitutive law for the mechanical behaviour of silicone rubber is r...

Gas guns and velocity interferometric techniques have been used to determine the loading behavior of AD995 alumina rods 19 mm in diameter by 75 mm and 150 mm long, respectively. Graded-density materials were used to impact both bare and sleeved alumina rods while the velocity interferometer was used to monitor the axial-velocity of the free end of the rods. Results of these experiments demonstr...

The electronic structure of bulk ZnX (X1⁄4O, S, Se, and Te) under uniaxial strain along the [0001] direction or equibiaxial strain along the (0001) plane is investigated using hybrid density functional theory calculations and many-body perturbation theory. It is shown that compressive uniaxial (or tensile equibiaxial) strains lead to a structural phase transition in all the ZnX systems. This is...

Single crystal Ni-based superalloy, with excellent mechanical properties in high temperature, always works under complex stress states, including multiaxial tension and compression, which results various strengthening mechanisms. In this paper, the atomistic simulation is applied to investigate microstructure evolution loading conditions, uniaxial, equibiaxial, non-equibiaxial tensile–compressi...

This paper presents a new power cycle for direct conversion of thermomechanical energy into electrical energy performed on pyroelectric materials. It consists sequentially of (i) an isothermal electric poling process performed under zero stress followed by (ii) a combined uniaxial compressive stress and heating process, (iii) an isothermal electric de-poling process under uniaxial stress, and f...

Patient-specific measures derived from quantitative computed tomography (QCT) scans are currently being developed as a clinical tool for vertebral strength prediction. QCT-based measurement techniques vary greatly in structural complexity and generally fall into one of three categories: (1) bone mineral density (BMD), (2) "mechanics of solids" (MOS) models, such as minimum axial rigidity (the p...

In this paper, both 2D and quasi-3D hyperbolic integral shear deformation theories are employed for buckling analysis of functionally graded (FG) plates. The simplicity the developed theory is due to reduced number unknowns used in field displacement. proposed model takes into account effect normal transverse deformations ensures nullity stresses at top bottom surfaces studied structure without...

We present a first principles density functional theory based study of the impact of uniaxial strain on the structural and electronic properties of bulk ZnX X=O, S, Se, Te in the wurtzite and zinc blende phases. The strain axis was chosen to be along the 0001 and 111 directions, respectively, for the wurtzite and zinc blende systems. For large uniaxial compressive strains, all systems undergo a...