The second invariant of the left Cauchy–Green deformation tensor B (or right C) has been argued to play a fundamental role in nonlinear elasticity. Generalized neo-Hookean materials, which depend only on first invariant, lead universal relations that conflict with experimental data, fail display important mechanical behaviors (such as Poynting effect simple shear), and may not provide satisfact...

By employing an idealized model of a polymer network and filler, we have investigated the stress-strain behavior by tuning the filler loading and polymer-filler interaction in a broad range. The simulated results indicate that there actually exists an optimal filler volume fraction (between 23% and 32%) for elastomer reinforcement with attractive polymer-filler interaction. To realize this rein...

Coupled fluid–structure interaction (FSI) analysis of the human right coronary artery (RCA) has been carried out to investigate the effects of wall compliance on coronary hemodynamics. A 3-D model of a stenosed RCA was reconstructed based on multislice computerized tomography images. A velocity waveform in the proximal RCA and a pressure waveform in the distal RCA of a patient with a severe ste...

In this paper, an analytical study is made for the dynamic behavior of human brain tissue under transient loading. In this analytical model the Mooney-Rivlin constitutive law is coupled with visco-elastic constitutive equations to take into account both the nonlinear and time-dependent mechanical behavior of brain tissue. Five ordinary differential equations representing the relationships of fi...

In the present work we derive an analytical expression for pressure–deflection curve of circular membranes subjected to inflation. This problem has been studied mostly from a numerical point view and there is still lack accurate closed-form solutions in nonlinear elasticity. The formulation developed with semi-inverse method by setting priori kinematics deformation membrane. A compressible Moon...

The most important item when indicating the mechanical properties of offshore elastomeric bearings is shear modulus, and method measuring this shown in EN 1337-3, a regulation related to bearings. In work, we conducted an experimental numerical study on bearing find its modulus. Shear modulus tests were according procedure specified 1337-3 Annex F, while simulations performed using finite eleme...

Abstract With the increasing demand to reduce emissions and save energy, hydraulic reservoirs require new architecture optimize their weight, space, volume. Conventional open are large, heavy, easily polluted, threaten operation of systems. A closed reservoir provides advantages small volume light compared reservoirs. In this study, a non-metallic pressure with variable is designed manufactured...

In some soft biological structures such as brain and fat tissues, strong experimental evidence suggests that the shear modulus increases significantly under increasing compressive strain, but not under tensile strain, whereas the apparent Young's elastic modulus increases or remains almost constant when compressive strain increases. These tissues also exhibit a predominantly isotropic, incompre...

The uniaxial compressive responses of silicone rubber (B452 and Sil8800) and pig skin have been measured over a wide range of strain rates (0.004–4000 s ). The uniaxial tensile response of the silicone rubbers was also measured at low strain rates. The high strain rate compression tests were performed using a split-Hopkinson pressure bar made from AZM magnesium alloy. High gain semi-conductor s...