In order to solve the problems of serious heating and easy ablation conductive shaft in electrochemical machining special-shaped deep hole with large aspect ratio, two schemes single-sided copper bar symmetrical are studied by ANSYS software. By establishing thermoelectric coupling model shaft, distribution law temperature field thermal deformation under different working conditions is analyzed...

Improving operational performance and reducing fuel consumption is increasingly important for shipping companies. Ship degrades over time due to hull propeller fouling; therefore assessing when fouling effects are significant enough warrant cleaning critical. Advancements in onboard data logging systems, combined with machine learning techniques, unlock the potential predict accurately determin...

The AASHTO code of practice for design of bridges shows that the ductility level for foundation is given equal to one. Bridges are classified in three classes. For class of essential and normal bridges a question for not to use ductility level due to the importance of bridges’ costs is become an important item in different countries particularly in Middle east. This paper aimed to study on pe...

In this paper torsion of hollow Poroelastic shaft with Elliptical section is developed. Using the boundary equation scheme. It looks for a stress function where satisfied Poisson equation and vanishes on boundary. It also analyzed stress function and warping displacement for the hollow elliptical section in Poroelastic shaft. At the end, the result of elastic and poroelastic shaft in warping di...

In this study, an analytical model is developed to study crack breathing behavior under the effect of crack location and unbalance force. Crack breathing behavior is determined using effectual bending angle by studying the transient change in closed area of the crack. The status of the crack of a balanced shaft is symmetrical about shaft rotational angle and the duration of each crack status re...

Sun tracker technology is one of the mechatronic devices to optimize electrical energy rays from sun's by directing solar panel plane follow direction. This research aims design and manufacture an effective dual axis sun so as maximize absorption energy. The benefits provide a concept mechanical prototype with capacity 200 Wp which able detect light sources using CSD60-B DC motor in driving sys...

external fluted feed rolls are commonly used in grain drills. the fluted feed roll meters a volume of seeds and does not singulate the seeds as do the precision planters; therefore, there will be inherent variation in the number of seeds delivered per unit of time. this research was conducted to investigate the effect of seed meter drive shaft and ground speeds and outlet positions in a grain d...