In this work, the mechanical response of an one-dimensional active solid—defined as a network stochastic particles interacting by nonlinear hard springs— subject to external deformation force, is numerically studied and rationalized with minimal model. It found that solid made linear springs stress presents average which independent system’s activity. However, when springs, solid’s decreases re...

MITRAL VALVE MECHANICS by Neil B. Ingels, Jr. and Matts Karlsson Figure 29.1 Stress-strain curves (adapted from Figure 6 of May-Newman and Yin1) for excised anterior and posterior porcine leaflets. Tables show mean PREand POST-transitional elastic moduli in the circumferential (CIRC) and radial (RAD) directions for ANTERIOR(Left Table) and POSTERIOR(Right Table) leaflets. Anterior CIRC (solid b...

The phenomenon of Non-Classical Rotational Inertia, in which a body does not rotate with its rotating container, has been recently observed in solid Helium-4. This property is shared by superfluid liquid helium. The recent findings might be evidence of superflow in solids. Superfluidity or flow sans dissipation is commonly associated with liquids. Counter-intuitive as it may seem, quantum mecha...

INTRODUCTION Space closure is one of the most challenging processes in Orthodontics and requires a solid comprehension of biomechanics in order to avoid undesirable side effects. Understanding the biomechanical basis of space closure better enables clinicians to determine anchorage and treatment options. In spite of the variety of appliance designs, space closure can be performed by means of fr...

A statistical field theory is formulated, which allows one to calculate the pressure distribution Pr(p) in a contact formed by an elastic body and a rigid counter face of arbitrary topography. It is a cumulant expansion, which contains Persson's contact mechanics theory as the leading-order term. Our approach provides a framework with which corrections can now be derived systematically. As an e...

The importance of estimating discretization error has been sadly neglected in the computational solid mechanics community. Quite the opposite is true in the computational fluid dynamics community where discretization error estimation is required to publish numerical results in many CFD journals, including the ASME Fluids Engineering Journal. It is suggested that if more solid mechanics types wo...

A wavelet is a basis function used to construct a wavelet transform. The first known wavelet – Haar wavelet was proposed in 1909 by Alfred Haar. Wavelet theory has been applied to various problems including signal processing in communications, image compression-extraction, solution of the linear and nonlinear integral equations etc. Haar wavelet based discretization technique is adopted for sol...

One of the largest controversial issues of the materials science community is the interpretation of scaling laws on material strength. In spite of the prevailing view, which considers mechanics as the real cause of such effects, here, we propose a different argument, purely based on geometry. Thus, as happened for relativity, geometry could again hold an unexpected and fundamental role.

MRI of the lung has been shown to be highly sensitive to infiltrative and solid pathology. It offers particular advantages beyond the scope of CT such as dynamic studies of respiratory mechanics and first pass perfusion imaging. However, challenges such as motion artifacts and low signal have delayed the introduction into clinical routine. This chapter discusses the strategies to overcome these...