The Research Of Integrated Optimization Dynamical Balancing In Framework Transmission Mechanism

The problem of mechanism dynamical balancing is one of the most important mechanical dynamics topics. At present, this kind of problem is almost solved by the analytical method. However, this method can be comparatively adopted to solve the problem with the simple structure and regular components. Because analytical equations are difficult to establish for complex components, it is difficult to achieve dynamical balancing by using analytical method. But computer simulation method can conveniently solve the problem of dynamical balancing for complex components.According to the dynamical balancing problem of packing frameworks transmission mechanism, integrated optimization dynamical balancing based on virtual prototyping technology is presented. Based on the theory of mechanism dynamical balancing, virtual prototyping technology and integrated optimization are applied to solve this problem. And counterweight optimum parameters of packing framework transmission mechanism are achieved. At the same time, the method of rigid-flexible coupling is applied to analysis flexible unloading design of framework transmission mechanism.Firstly, the 3D model is built in Pro/E which is input in ADAMS by parasolid format and then the virtual prototype model of framework transmission mechanism is built by defining material density, constraint, motion relations and etc.. Secondly, integrated optimization model is built in iSIGHT and coupling simulation of Pro/E, ADAMS and Matlab is achieved. To take linear weighted sums of shaking force and shaking moment root-mean-square as objective function and adopt optimization tactics of Multi-Island Genetic Algorithm and Sequential Quadratic Programming, optimum dynamical balancing of framework transmission mechanism is achieved. At last, the finite element model of bracket is built in ANSYS which is input in ADAMS by modal neutral file and the virtual prototyping model of left fuselage framework transmission mechanism with flexible body is built. The effect of flexible fuselage framework transmission mechanism is discussed.