The complex number vector analysis was employed to analyze the motion of crank rocker and crank slider mechanisms. Vector equations were established, from which the extreme angles, the positions of dead point and the minimum transmission angles of the mechanisms were analyzed. According to the angular relationship in the motion, the calculation equations were obtained.
This paper put forward a kind of improved structure for the supporting shaft of three - ring reducer, analyzed coordinate conditions for elastic deformation of the supporting shaft and established the elasto - dynamic equations of this kind of improved structure. A comparison is carried out between the improved structure and the original one's on its force bearing and natural frequency of eccentric sleeve of supporting shaft. The feasibility of overcoming the dead points of mechanism by this structure is analyzed.
The computation shows that the loads of the bearings at the two dead points are not as high as depicted by past researchers. This result denies the existence of “dead point impact” which is widely accepted in academic community.
To achieve this goal, the authors have worked out a computational model that allowed them to determine the value of the gained geothermal heat flux using a double-pipe geothermal heat exchanger with a dead center.
An equivalent "tumble ratio" was defined and evaluated using the measured velocity fields at BDC (bottom dead center).
The location was at a mid-plane of the top dead center (TDC) clearance height, and the engine was motored at a speed of 500?rpm.
These data are obtained in severe thermodynamical conditions in the cylinder during the cycle and in the bowl at top dead center (TDC).
The time series are acquired at three different test conditions and consisting of succeeding pressures at compression Top Dead Center (TDC) position of one of four cylinders.
This results in the following advantages: decrease in feding speed in the dead points, increase in feeding speed in the middle of the stroke, and easy adjustment to determine optium feeding.
This is obtained by optimization of a four-bar pedaling mechanism with no "dead points".
A further objective of our review is to demonstrate that the ability to compute the steepest descent direction at degenerate dead points opens a new way for handling degeneracy in active set methods.
A description is given of a system for determining the angles between the upper and lower dead points of the first piston and between the lower dead points of the first and second pistons of an opposed diesel engine.
And, the value for the dead points had the largest value so that be excluded.
In this paper a program used for analyzing the kinemetics of spatial RSSR mechanism is provided.The program is designd by means of the computev graphical solution,by which the displacement,velocity and acceleration of the output link can be gotten,and the revolution range of the side links and it's dead points can also be determined.Simultan eously,the kinemetical curves may be gotten from the on-line drafting machine.
This paper analyses the method of dimensional synthesis of crank-lock ermechanism with dead position .The paper also describes the necessary design program proposed to synthesize this mechanism and examples of the applicationsof this method. The results given here show that this method is both convenient and efficient.
A brief analytical procebure is carried out for the synthesis of theplanar 4--bar double--rocker mechanism for coordinating the optimumtransmission characteristics, at the prescribed extreme positions. Takingthe equal deviation of the traosmission angles from the normals of drivenrocker at the two dead--centre positions as the design criterion. Numer-ical examples are provided to confirm that the method to be correct byprogramming and the computer calculating.