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The FEA model was built and modal analysis was executed for the loader hood structure. The mathematical model of topology optimization on continuum structures was established based on the solid isotropic material with penalization (SIMP) theory. A new layout of the ribs of loader hood was gotten through topology optimization using OptiStruct software. The results show that the improved design of the...
In this paper, the dynamic model of powertrain mount system was established after appropriate simplification with focusing on the powertrain parameters of a certain type car. And based on the geometry model of the car body and that of the cabin, a result that is the Sound Pressure Level (SPL) of the field points will be reduced with the exciting forces of powertrain mount being smaller under the idle...
The electromechanical coupled dynamic model of the stator of the bar-type ultrasonic motor is derived based on the finite element method. The dynamical behavior of the stator is analyzed via this model and the theoretical result agrees with the experimental result of the stator of the prototype motor very well. Both the structural design principles and the approaches to meet the requirements for the...
A novel annular sector curvilinear ultrasonic motor with composite in-plane bi-mode is presented and optimally designed by combining genetic algorithm and finite element method together in this paper. The optimization structure of the vibrator is determined. According to the optimization results, the sample motor is fabricated and tested. The results show that the consistency of the resonance frequencies...
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