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Modeling transmission mechanisms with determination of efficiency

Ratov Denis, Lyfar Vladimir

Applied Computer Science

2020

Vol. 16, no 1

33--40

Continuing previous studies, reviewed by modeling transmission mechanisms with the definition of one of the major criteria of transmission efficiency – the efficiency of the gearing, which depends on the geometry and kinematics of the working surfaces of the engagement and position of the contact point on the engaging surface in the object of the simulation model the designed transmission.

Mechanism of a motion platform inducing the movement of the operator’s seat in a heavy machine

Tora G., Trzaska W.

International Journal of Applied Mechanics and Engineering

2016

Vol. 21, no. 4

1007--1015

One of the major work safety issues involves the investigations of machine vibrations and the way they affect the machine operators. These investigations can be performed in the laboratory conditions in a setup in which the seat vibrations are induced by a motion platform. A complex mechanism is proposed implementing 3 translations and 2 rotation movements, and actuated by three electric motors. This study investigates the design structure of the real motion platform mechanism and provides the synthesis of link dimensioning. Kinematic dependencies are formulated and the Jacobian matrix is derived accordingly to solve the equations of motion. Computer simulation procedure yields the critical seat vibration frequency and amplitudes for the available asynchronous motors.