Dynamic analysis method for eight-connecting-rod mechanical press
A mechanical press and dynamics analysis technology, applied in the field of mechanical transmission, can solve problems such as cumbersome, incapable of parameterization, and large workload, and achieve the effect of improving calculation efficiency and simple solution
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[0047] The present invention will be further described below in conjunction with the drawings and specific embodiments.
[0048] The present invention proposes a multi-objective optimization method for an eight-link mechanical press based on the NSGA-II algorithm. For a certain type of press, the stroke and tonnage are fixed, and the design needs to be based on an existing mature press Variables (bar system parameters) are adjusted, and the optimization goals are the minimum sliding speed fluctuation value in the specified area and the minimum crank torque value in the specified area, and a multi-objective optimization mathematical model is established. In actual operation, the design variables (bar system parameters) of this mature press are taken as the median value, and the upper and lower limits are floated by a certain ratio as the upper and lower limits. At the same time, the constraint conditions are adjusted, and then a multi-objective optimization mathematical model is es...
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