Investigation on dynamic motion of four bar chain / Daim Asmizan Shamsudin

Final year project consists of the investigation and analysis of four bar chain mechanism. Mechanisms are means of power transmission as well as motion transformers. The main reasons why the project should be done is to solve the problems to determine all lengths of links of the planar four-bar linkages whose curve passes through a given coupler curve or some given discrete points. A four-bar mechanism consists mainly of four planar links connected with four revolute joints. The input is usually given as rotary motion of a link and output can be obtained from the motion of another link or a coupler point. Straight line motion from four bar linkages has been used in several ways as in a dwell mechanism and as a linkage to vehicle suspension. This project studies the straight-line motion obtained from planar fourbar mechanisms and optimizes the design to produce the maximized straight-line portion of the coupler point curve. The equations of motion for four different four-bar mechanisms will be derived and dimensional requirements for these mechanisms will be obtained in order to produce the straight-line motion.