Method for inversely deducing Young modulus of loudspeaker vibrating member by means of stiffness coefficient of loudspeaker vibrating member
A technology of vibrating components and stiffness coefficients, which is applied in the direction of instruments, electrical digital data processing, and special data processing applications, etc., can solve the problems of inability to accurately measure the Young’s modulus of the speaker’s vibrating components, and achieve good design and production. speaker effect
Active Publication Date: 2015-12-09
ZHEJIANG ELECTRO ACOUSTIC R&D CENT CAS +1
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Problems solved by technology
[0005] What the present invention aims to solve is the problem that the Young's modulus of the vibrating part material of the loudspeaker cannot be accurately measured
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[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0034] Such as figure 1 Shown, a kind of method of the present invention pushes back its Young's modulus by the stiffness coefficient of loudspeaker vibrating part, concrete steps are:
[0035] (1) Measure the stiffness coefficient of the vibrating part;
[0036] There are two ways to measure the stiffness coefficient of the vibrating part: 1) Calculate the stiffness coefficient of the vibrating part through the displacement amm / Mg marked on the design drawing of the vibrating part: K 1 =M×9.8×10 -3 / a (N / mm), M represents the mass, a represents the displacement, and N represents the unit of force; 2) Use the compliance measuring instrument of the speaker vibration part to measure the different deformation displacements of a point P on the vibration part x 1 Stiffness coefficient under K 1 ( x 1 );
[0037] If you want to obtain higher...
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The present invention discloses a method for inversely deducing Young modulus of a loudspeaker vibrating member by means of a stiffness coefficient of the loudspeaker vibrating member, and belongs to the field of loudspeaker design and fabrication and material parameter measurement. The method comprises: firstly, obtaining a stiffness coefficient K1 of the loudspeaker vibrating member by using a measurement method; secondly, obtaining a stiffness coefficient K2 of the vibrating member by using an emulation analysis method, which comprises the steps of establishing a geometric model, establishing an emulation analysis model, carrying out static analysis solution and the like; and finally, by means of the stiffness coefficients K1 and K2, inversely deducing and calculating the Young modulus of the vibrating member material. According to the method, a material characteristic of the loudspeaker vibrating member can be relatively accurately obtained, so that a loudspeaker can be better designed and manufactured.
Description
technical field [0001] The invention belongs to the field of loudspeaker design and manufacture and material parameter measurement, and relates to a method for inverting the Young's modulus of a vibrating part of the loudspeaker through the stiffness coefficient thereof. Background technique [0002] The vibration parts of the loudspeaker include the strut, the paper cone, the dust cap, the skeleton and the voice coil, etc. Most of the components are composite materials, such as the strut, which is obtained by impregnating the fiber braid in a glue matrix such as phenolic resin. After hot pressing, it is a typical composite material. Its material properties are relatively complex and difficult to measure, and the processes of cloth cutting, glue mixing and hot pressing during the processing will affect the Young's modulus of each component. have an important impact. However, during the working process of the vibrating part, more properties of the linear elastic material are...
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IPC IPC(8): G06F17/50
Inventor 温周斌周建明陆晓柴国强徐楚林沐永生岳磊吕振华
Owner ZHEJIANG ELECTRO ACOUSTIC R&D CENT CAS