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To increase the productivity of machining process, a two slider crank mechanism is proposed in this paper. In general, friction and clearance always present in any mechanical system. Hence, the e ects of friction and clearance on a dynamic system are so critical. This paper aims to investigate their e ects on the dynamic response of a slider-crank mechanism with two sliders and imperfect joints. Firstly, the mechanism is created in Solidworks and then it is simulated via nite element method in ANSYS. The dynamic simulation is conducted to evaluate the mentioned e ects. The results revealed that the e ect degree of clearance on the dynamic behaviors of the proposed mechanisms is significantly higher than that of friction. Also, the results indicated that the velocities, acceleration, and contact force graph are almost same at different friction coe cient. However, compared with ideal joint case, they had a maximum value and an unstable oscillation. This problem is due to journal collide into bearing induced the maximum values of contact force.

Effect of Clearance and Friction in Revolute Imperfect Joints on Dynamic Behaviors of a Slider-Crank Mechanism with Two Sliders