Boundary-layer meshes are important for numerical simulations in computational fluid dynamics, including computational biofluid dynamics of air flow in lungs and blood flow in hearts. Generating boundary-layer meshes is challenging for complex biological geometries. In this paper, we propose a novel technique for generating prismatic boundary-layer meshes for such complex geometries. Our method...

This paper proposes a new family of four degrees-of-freedom (dof) parallel mechanisms with two platforms and its application to a footpad device that can simulate the spatial motions of the human foot. The new mechanism consists of front and rear platforms, and three limbs. Two limbs with 6-dof serial joints (P-S-P-P) are attached to each platform and are perpendicular to the base plate, while ...

The role of free surfaces on the formation of prismatic dislocation loops"

AIM To quantify the effects of using prismatic glasses including optometric correction, on head and neck kinematics, perceived exertion and comfort, during work in the oral cavity. METHODS The study population consisted of forty-five participants. After a basic ergonomic education, baseline measurements of head and neck kinematics were made using inclinometers. Perceived exertion and comfort ...

* Corresponding Authors ABSTRACT This paper studies the geometric design of spatial open loop prismatic-revolute-revolute (PRR) robot manipulators. Four spatial positions and orientations are defined and the dimensions of the geometric parameters of the PRR manipulator are computed so that the manipulator will be able to place its end-effector at these four pre-specified locations. Denavit and ...

In this paper the parametric study is carried out to investigate the effect of number of cells in optimal cost of the non-prismatic reinforced concrete (RC) box girder bridges. The variables are geometry of cross section, tapered length, concrete strength and reinforcement of the box girders and slabs that are obtained using ECBO metaheuristic algorithm. The design is based on AASHTO standard s...

Figure 1: A single prismatic cube hardware module. Michael Philetus Weller

This paper presents a computational framework for optimal design of non-prismatic reinforced concrete box girder bridges. The variables include the geometry of the cross section, tapered length, concrete strength and reinforcement of box girders and slabs. These are obtained by the enhanced colliding bodies optimization algorithm to optimizing the cost and again CO2 emission. Loading and design...

High levels of strength- and stiffness-to-mass ratio can be achieved in slender structures by lengthwise tailoring their cross-sectional areas. During use, a non-prismatic beam element subject to surface forces or loads acting on only part cross-section. Practical examples involve tapered aircraft wings, wind turbine helicopter rotor blades under fluid pressure shear forces; arched beams bridge...