Results 21 to 30 of about 2,090 (210)

Synthesis and Analysis of a Novel Linkage Mechanism with the Helical Motion of the End-Effector

open access: yesRobotics, 2020
The proposed study is focused on the development of a novel modification of the slider-crank mechanism, the kinematic scheme of which is organized by coupling planar and spatial (screw) kinematic chains.
Alexey Fomin   +2 more
doaj   +1 more source

Design and Experiment of an Integrated Automatic Transplanting Mechanism for Picking and Planting Pepper Hole Tray Seedlings

open access: yesAgriculture, 2022
The operation of the semi-automatic pepper pot seedling transplanter has the problem of a low frequency of manual operation. We designed a new automatic transplanting mechanism based on a clamping stem.
Shuangyan Hu   +3 more
doaj   +1 more source

Dynamic Simulation of Crank-Group Driving Mechanism with Clearance

open access: yesThe Open Mechanical Engineering Journal, 2015
For the crank-group driving mechanism, the assembly clearances can offer the possibility to remove overcoming processing errors. But the clearances inevitably affect the dynamic characteristics of the mechanism. In this paper, the dynamic simulation model of the crank-group driving mechanism is established by NX/Motion Simulation which is based on the ...
Liu Yansong, Cao Jujiang, Cai Dongfei
openaire   +1 more source

Expert assessment results anaylisys of machines power units in winter conditions

open access: yesВестник СибАДИ, 2020
Introduction. The implementation of production and technological processes of machines on the vast territory of the Russian Federation is related to the necessity to operate them in low temperatures conditions.
R. F. Salikhov   +2 more
doaj   +1 more source

The Working Cycle of the Motoring Internal Combustion Engine by a New Method with Cylinder Pressures as in Real Engine Operation

open access: yesJournal of Mechanical Engineering, 2022
The current standard methods of determining the mechanical losses of the ICE by motoring do not correspond to the low pressures in the cylinders of real engine operation.
Procházka Radek   +4 more
doaj   +1 more source

New Ways to Measure Mechanical Losses by Motoring an ICE with Increased Cylinder Pressure

open access: yesApplied Sciences, 2022
The article shows the results of measuring the mechanical losses of a piston engine in two new ways and explains the necessary engine modification for these measurements.
Radek Procházka   +3 more
doaj   +1 more source

Kinematics Analysis of Multi-link Mechanism for Miniature Servo Press Based on Matlab

open access: yesMATEC Web of Conferences, 2018
The degree of freedom for a multi-link drive mechanism of a 50kN miniature servo press was calculated. The kinematics equations of the mechanism was established based on the rod group method.
Lu Xinjian
doaj   +1 more source

Distinct Microstructural Characteristic Lengths Defining Notch Fatigue Crack Initiation and Propagation, and Defect Tolerance in Advanced Steels

open access: yesAdvanced Engineering Materials, EarlyView.
Schematic representation of modes of microcrack nucleation, growth and temporary arrestment at different boundaries, with the criteria for crack propagation in three scenarios: (1) large notch, (2) defect/small sharp notch, and (3) long crack. This work revisits and integrates results on the fatigue behavior of advanced bainitic steels (in particular ...
Lucia Morales‐Rivas
wiley   +1 more source

Spatially Modulated Morphotropic Phase Boundaries in a Compressively Strained Multiferroic Thin Film

open access: yesAdvanced Functional Materials, EarlyView.
ABSTRACT The coexisting rhombohedral‐like (R′, MA) and tetragonal‐like (T′, MC) monoclinic phases in compressively strained bismuth ferrite thin films exhibit exceptional piezoelectric and magnetic properties. While previous studies have largely focused on probing the morphotropic phase boundaries (MPBs) comprising ordered R′/T′ twins, their self ...
Ting‐Ran Liu   +7 more
wiley   +1 more source

THE REASONS OF INTENSIVE WEAR OF CYLINDERS OF YAMZ ENGINES – 238NB

open access: yesВестник СибАДИ, 2017
It is stated results of control in the course of repair of technical condition of cylinders of engines. Need of diagnosing of cylinders in structural parameters by direct measurements with partial or full dismantling of engines is proved. The description
S. A. Kornilovich
doaj   +1 more source

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