A dilated ascending aorta or aortic root is susceptible to fatal aortic dissection or rupture. This risk may be attributed to increased circumferential stresses due to an increase in aortic lumen diameter. However, the effect of complex geometry on wall stresses in the dilated ascending aorta is not well understood. In this study, we combined pre-operative MRI data and measured mechanical prope...

In this paper, the dynamic behavior of square plates with various thicknesses and stiffening configurations subjected to underwater explosion (UNDEX) are evaluated through a relatively novel approach which is called Incremental Explosive Analysis (IEA). The IEA estimates the different limit-states and deterministic assessment of plats’ behavior, considering uncertainty of loading conditions and...

Carvil, PA, Attias, J, Evetts, SN, Waldie, JM, and Green, DA. The effect of the gravity loading countermeasure skinsuit upon movement and strength. J Strength Cond Res 31(1): 154-161, 2017-Effective countermeasures against musculoskeletal deconditioning induced by microgravity and disuse are required. A simple alternative to provision of artificial gravity by centrifugation is compressive axial...

Abstract To improve the crashworthiness and energy absorption of thin-walled tube structures, a bionic was designed based on structural characteristics antler osteon principle bionics had same inner outer diameters gradient thickness as osteon. A nonlinear finite element method is used to simulate with equal variation (EGTTS) under axial oblique loads. The EGTTS-7 (Egtts 7 layers) evaluated usi...

investigating the parameters influencing the behavior of buried pipelines under dynamic loading is of great importance. in this study the soil structure interaction of the pipelines with the surrounding soil was addressed using shaking table tests. wave propagation along the soil layers was also included in the study. the semi infinite nature of the field was simulated using a laminar shear box...

In the deformation of layered materials such as geological strata, or stacks of paper, mechanical properties compete with the geometry of layering. Smooth, rounded corners lead to voids between the layers, while close packing of the layers results in geometrically induced curvature singularities. When voids are penalized by external pressure, the system is forced to trade off these competing ef...