Numerical simulation analysis method for dynamic stiffness of loudspeaker basin stand

A loudspeaker frame and numerical simulation technology, applied in the field of loudspeakers, can solve the problems of finding vulnerable points, time-consuming, labor-intensive, expensive, etc., and achieve the effect of improving product design efficiency and saving research and development costs and time
CN109362020AActive Publication Date: 2019-02-19ZHEJIANG ELECTRO ACOUSTIC R&D CENT CAS +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG ELECTRO ACOUSTIC R&D CENT CAS
Publication Date
2019-02-19

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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.
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Description

technical field

[0001] The invention belongs to the field of loudspeakers and relates to a simulation analysis method for structural mechanics and dynamics of loudspeakers. 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, as well as the size and distribution of stress, strain, displacement, velocity and acceleration at any point on the structure under arbitrary frequency excitation Condition. Background technique

[0002] The sufficient structural stability of the loudspeaker is the prerequisite for its normal operation. The speaker frame is an important part to maintain the stability of the speaker structure, and it plays a role in supporting and protecting the diaphragm, voice coil and other components. The dynamic stiffness of the loudspeaker frame is one of the important parameters to evaluate the structural stability of the loudspeaker...

Claims

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