Topic
Rotational speed
About: Rotational speed is a research topic. Over the lifetime, 23327 publications have been published within this topic receiving 151696 citations. The topic is also known as: speed of revolution & revolution rate.
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TL;DR: In this article, a response to a range change request, during which the drive wheels are rotated in a low or high range, can be smoothly and quickly completed without using a synchronous engaging mechanism.
Abstract: In a vehicle drive device, a response to a range change request, during which the drive wheels are rotated in a low or high range, can be smoothly and quickly completed without using a synchronous engaging mechanism. When the range change is requested when the drive wheels are rotated in the low range or in the high range, the control devices disengage a clutch sleeve from a currently engaged gear piece so as to establish a neutral range, and control an output rotational speed of the motor generator such that a difference between an input rotational speed and an output rotational speed of the transmission mechanism is set to be zero, or be equal to or less than a predetermined value. After that, the control devices cause a connection processor to slide the clutch sleeve to be connected to a connection target gear piece.
64 citations
TL;DR: In this article, the effects of the welding parameters on mechanical properties of friction stir welded joints were analyzed in detail, and the results showed that the developed models were reasonably accurate.
63 citations
TL;DR: In this paper, numerical study and thermal prediction for a nanofluid jet impingement cooling of an isothermal hot surface with an adiabatic rotating cylinder were performed.
63 citations
TL;DR: In this paper, the inuence of rotational and traverse speed on the friction stir welding of AA5083 aluminum alloy has been investigated and an Articial Neural Network (ANN) model was employed to understand the correlation between the welding parameters (rotational and traversal speed) and peak temperature, HAZ width and welding force values in the weld zone.
Abstract: In this study the inuence of rotational and traverse speed on the friction stir welding of AA5083 aluminum alloy has been investigated. For this purpose a thermo-mechanically coupled, 3D FEM analysis was used to study the effect of rotational and traverse speed on welding force, peak temperature and HAZ width. Then, an Articial Neural Network (ANN) model was employed to understand the correlation between the welding parameters (rotational and traverse speed) and peak temperature, HAZ width and welding force values in the weld zone. Performance of the ANN model was found excellent and the model can be used to predict peak temperature, HAZ width and welding force. Furthermore, in order to find optimum values of traverse and rotational speed, the multi-objective optimization was used to obtain the Pareto front. Finally, the Technique for Order Preference by Similarity to the Ideal Solution (TOPSIS) was employed to obtain the best compromised solution.
63 citations
TL;DR: In this paper, the mixed convective transport of Cu-H 2 O nanofluid in a differentially heated and lid-driven square enclosure in the presence of a rotating circular cylinder is investigated numerically.
63 citations