In this paper, a three-dimensional numerical framework for modeling growth of swellable soft materials at large deformation is established based on the cell-based smooth finite element method, and multiplicative decomposition scheme gradient given. The second P-K stress Green's strain tensor are selected as work conjugate pairs, corresponding mathematical expressions stiffness matrix geometric ...

Ligament viscoelasticity is an important determinant of tissue response to loading, and viscous dissipation modulates the potential for ligament damage or catastrophic failure. The nature of ligament viscoelastic response represents a combined measure of solid phase viscoelasticity and fluid movement. Both of these contributors are likely direction-dependent due to ligament anisotropy. Small si...

This paper is concerned with the use of leaky Lamb waves for the nondestructive evaluation (NDE) of damage in anisotropic materials such as fiber-reinforced composites. Two fundamental acoustic properties of the material, namely, the wave speed and attenuation have been measured. Stiffness is deduced from the wave speed. The damage mode selected for this study is matrix cracking. As expected, t...

In this paper we present a novel engineering application of Origami, using it for both the flexibility and the rigidity the folding patterns provide. The proposed Folded Textured Sheets have several interesting mechanical properties. The folding patterns are modelled as a pin-jointed framework, which allows the use of established structural engineering methods to gain insight into the kinematic...

Friction in joints significantly contributes to the observed overall damping of mechanical structures. Especially if the material damping is low, the frictional effects in joints and clamping boundary conditions dominate the structural damping. The damping and the stiffness of the structure are nonlinear functions of the system states and consequently of the excitation signal and amplitude. If ...

Phase field theory is developed for solids undergoing potentially large deformation and fracture. The elastic potential depends on a finite measure of elastic strain. Surface energy associated with fracture can be anisotropic, enabling description of preferred cleavage planes in single crystals, or isotropic, applicable to amorphous solids such as glass. Incremental solution of the Euler–Lagran...

This study presents the free vibration analysis of a double tapered beam having linearly varying both thickness and width, by using finite element component mode synthesis methods. To determine natural frequency shape cracked beam, stiffness mass matrices have been obtained. The crack in is modeled as massless spring, divided into two subcomponents from section. spring has derived linear elasti...

OBJECTIVE Aortic stiffness is an important cardiovascular risk marker, which can be determined using different noninvasive techniques. Aortic propagation velocity (APV) has recently been established as a novel echocardiographic parameter of aortic stiffness. This study aimed to investigate the association between APV and the classical echocardiography-derived aortic stiffness parameters, aortic...