作者:
NickJavad AkbariMohamad.R MovahhedyS.Mehdi HoseiniGraduate Student
School of Mechanical EngineeringSharif University of TechnologyTehranIran.Mohsen Ghahramani Associate Professor
Centre of Ecellence in DesignRobotics and AutomationSchool of Mechanical EngineeringSharif University of TechnologyTehranIran. Professor
School of Mechanical EngineeringSharif University of TechnologyTehranIran. Graduate Student
Islamic Azad UniversityScience and Research BranchTehranIran.
ultrasonic assisted machining(UAM) is an efficient nontraditional machining operation for brittle, hard-to-cut and poor-machinability materialsIn UAM, high frequency oscillation in ultrasonic range at low amplitude is...
详细信息
ultrasonic assisted machining(UAM) is an efficient nontraditional machining operation for brittle, hard-to-cut and poor-machinability materialsIn UAM, high frequency oscillation in ultrasonic range at low amplitude is imposed on the workpiece or cutting toolIn most cases, the equipments that generates and transfers the vibration, have a complicated structure, and requires significant effort to achieve their optimum functionIn this work, a mathematical model is developed and an optimization method is employed for design processThis makes it possible to achieve proper setup and reduce the amount of calculationFor this purpose, the combination of a two level full factorial design is performed with data that are obtained from finiteelementmodel(FEM)are usedBased on the mathematical model, an objective function is defined with the objective of maximizing the vibration amplitude at longitudinal resonance frequency of 22 k *** algorithm is used to optimize the design parameters according to the defined objective functionThe obtained results are shown just an error about 0.03 percent between FEM modal analysis and mathematical model answerThe advantages of the proposed optimization method in ultrasonic setup design in case of complicated geometries is discussedTherefore optimization methods via FEM data could be regarded as an efficient approach for design of complicated structures.
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