in order to help in the engineering design of rice harvesting machines, there is a need to have exact information concerning the physical and mechanical properties of rice stems. the cutting force for rice stems, therefore, was measured by designing and fabricating a static and dynamic shear test apparatus. the effects of moisture levels and the cross-sectional area of stem as well as the varie...

nanoscale science and technology has today mainly focused on the fabrication of nano devices. in this paper, we study the use of lithography process to build the desired nanostructures directly. nanolithography on polymethylmethacrylate (pmma) surface is carried out by using atomic force microscope (afm) equipped with silicon tip, in contact mode. the analysis of the results shows that the dept...

Ships and offshore structures are subjected to impact loads, such as slamming sloshing. High pressures can cause permanent hull deformation by a single event. In addition, significant fatigue damage be accumulated via repeated pressures. this study, the plastic behavior of flat plates under is numerically investigated using coupled Eulerian–Lagrangian method. The dynamic pressure weight drop he...

In this study, a computational fluid dynamics model was employed to simulate the impact of breaking wave on foundation an offshore wind turbine. The accuracy numerical simulation validated in comparison with published experimental results for Large Wave Channel (GWK) at Hannover, Germany. To understand influence wave-breaking location monopile support structure, series shoaling waves different ...

The box girder can be seen as a kind of simplified ship structure that withstand vertical bending moment. Dynamic loads play an important role in structural safety analysis, such bow slamming during harsh sea conditions. In this paper, the dynamic elastic–plastic response and ultimate strength under moment are analyzed. A with same cross-section scantlings span length Nishihara experiment is se...

Abstract In rough seas, large masses of water will exceed the freeboard and cause violent slamming on deck, known as green water. Due to its high destructive power, many scientists have devoted themselves study Given complexity, various simplified methods been used mechanism stresses this paper, loads patterns events a fixed structure with rigid or flexible sidewalls were investigated using sol...

abstract introduction: in some individuals because of the poor functioning leg muscles, plantar arch drooping suffered and it seems that ground reaction force individuals with flat foot than to those with normal foot, due to reduced recruitment is altered by the arc. the aim of  the present study the effect of corrective exercise program on the ground reaction force of student with flat food du...