A Numerical Simulation Analysis Method for the Dynamic Stiffness of Loudspeaker Basin

Abstract

The invention provides a numerical simulation analysis method for dynamic stiffness of a loudspeaker basin stand. The method comprises the steps of firstly building a finite element simulation model comprising the sub-steps of 1, adding a physical field and a research type; 2, building a geometrical model of the loudspeaker basin stand; and 3, setting the physical field; setting an elastic material model, damping, a constraint condition and a loading force in a solid mechanics physical field; 3, setting a material parameter; and 4, setting grid types and sizes, and dividing grids to generate afinite element model; then solving the finite element model by using a frequency domain analysis method; and at last, performing postprocessing to acquire a change relationship of the dynamic stiffness of the loudspeaker basin stand along with frequency. A distribution diagram of the stress, strain and displacement on the basin stand and frequency responses of the displacement amplitude, speed amplitude and acceleration amplitude of any point on the basin stand also can be acquired under the sinusoidal loading effect at any frequency.

Description

Technical field [0001] The invention belongs to the field of loudspeakers, and relates to a simulation analysis method of loudspeaker structural mechanics and dynamics. Using this method, the dynamic stiffness of the speaker frame can be simulated, and the dynamic stiffness value of the speaker frame can be obtained through frequency domain analysis, and the size and distribution of the stress, strain, displacement, velocity and acceleration of any point on the structure under any frequency excitation Happening. Background technique [0002] The loudspeaker has sufficient structural stability to ensure its normal operation. The speaker frame is an important component to maintain the stability of the speaker structure, and plays a role of supporting and protecting other components such as the diaphragm and voice coil. The dynamic stiffness of the speaker frame is one of the important parameters for evaluating the stability of the speaker structure. When the loudspeaker is under...

AI Technical Summary

Problems solved by technology

[0004] The invention discloses a numerical simulation method of the dynamic stiffness of the loudspeaker pot frame, which solves the traditional test method that the pot frame sample must be prepared in advance, and the development of the pot frame sample is time-consuming, laborious, expensive, and investment-intensive, and it is difficult to search for damage. little effect

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