纵扭超声变幅杆的优化设计研究

Optimal Design of Longitudinal and Torsional Ultrasonic Horn

为了减少纵扭超声加工过程中能量的损失,文中从纵扭超声振动中纵向振动与扭转振动中的同一变幅杆中同频共振条件出发,基于ANSYS有限元模态分析、谐响应分析模块,利用ANSYS优化设计方法对变幅杆结构与尺寸进行优化,设计出在同一变幅杆中纵向振动与扭转振动有共同位移节点,同时变幅杆满足许用应力且具较大振幅放大倍数。通过ANSYS仿真验证在共同节点处可对纵扭超声变幅杆进行固定。

To decrease the loss of energy in longitudinal and torsional ultrasonic system, this paper optimizes the structure and the size of the horn using the model analysis and harmonic response analysis of ANSYS under the resonance frequency condition for the longitude and torsional vibrations in the same horn. We design a horn in which the longitudinal vibration has common displacement node with and torsional vibration.The horn can satisfy the promised stress requirement, and has a large amplitude magnification. ANSYS simulation verifies that the longitudinal and torsional horn can be fixed on their common displacement node.