Study On Integrated Design Of Topology Optimization Of Compliant Mechanism And Layout Of Actuator

The paper is based on the Project of National Natural Science Fund of China., Key Project of Science and Technology of the State Ministry of Education and Key Project of Natural Science Fund of Guangdong Province. An optimal topology design based on finite element method for compliant mechanism used in micro-manipulation system is presented. The following aspects are studied in this dissertation:Firstly, a finite element model of coupling structure including piezoceramic and compliant mechanism is set up. This model is more precise than the former simplified model and it develops following topology design. Secondly, the model of optimization is presented. The compliance and stiffness can be controlled by the multi-criteria objective function. Thirdly, the computational procedure for the optimization algorithm is presented. Fourthly, fully stress method is employed to obtain the optimal topology under stress constraints. Fifthly, the location and the size of the piezoceramic are optimized to develop the whole design of micro-manipulation system. Sixthly, an optimal topology design method for multiple inputs and multiple outputs compliant mechanism is presented. This method can be employed to design the multidimensional compliant mechanism. Seventhly, multi-criteria objective function is used to suppression of the output coupling terms. If the design permits, the symmetry structure and combined inputs can avoid the output coupling terms. Finally, some numerical examples are presented to show the validity of the presented method.