Porous materials are lightweight, flexible and resistant to hairline cracks, so today with the development of technology porous structure produced for use in various industries. This structure widely use in beams, plates and shells. The purpose of this paper is to investigate the effect of porosity in axial symmetry in bending and buckling load sheet for analysis. For this purpose, a circular p...

The hoes are widely used in the farms and home gardens in the United States. Many existing hoes are not ergonomically designed because they require a lot of back bending and wrist bending during use. Back bending often causes lower back injuries, and wrist bending often causes carpal tunnel syndrome. It can be very expensive to cure these injuries. The objective of this project is to reduce bac...

In this paper the process of laser forming has been investigated using an analytical and an experimental method for three levels scans velocity. A coupled analysis has been performed in ANSYS®. Also in order to prove the predictive methods, experiments on thin sheet metals have been done when a laser of a fair power was used. Before done, experiments were designed with full factorial chosen as ...

The cilia and flagella of eukaryotic cells function by active bending that produces cell movements and fluid flows in their environment. They contain a common cytoskeleton, known as the axoneme, that is the locus of all the enzymes and mechanical components that are required for production of useful bending. The bending of many flagella, and some cilia, is planar, or at least nearly planar. In ...

The joints between segmental rings can withstand a certain amount of bending moment as well as axial and shear forces. Generally, in the structural analysis of tunnel segmental lining, the joints can be modeled as elastic hinges or rotational springs, and their rigidity should be demonstrated in terms of the rigidity of the joints or their rotational stiffness. Therefore, the bending moment act...