The method of back-estimating the Young's modulus from the stiffness coefficient of the vibrating part of the loudspeaker
A technology of vibrating components and stiffness coefficients, which is applied in the directions of instruments, electrical digital data processing, and special data processing applications, etc., can solve the problem of inability to accurately measure the Young’s modulus of the vibrating component material of the loudspeaker, and achieve good design and production, good speaker effect
Active Publication Date: 2018-04-17
ZHEJIANG ELECTRO ACOUSTIC R&D CENT CAS +1
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[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 a mm / M g 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 The stiffness coefficient K under 1 ( x 1 );
[0037] If you want to obtain ...
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The invention discloses a method for back-estimating the Young's modulus of a vibrating part of a loudspeaker through the stiffness coefficient thereof, and belongs to the field of loudspeaker design and manufacture and material parameter measurement. First, the stiffness coefficient K1 of the loudspeaker vibrating part is obtained by using the measurement method. Then, the stiffness coefficient K2 of the vibrating part is obtained by using the simulation analysis method, which includes the steps of establishing a geometric model, establishing a simulation analysis model, and static analysis and solution. Finally, the Young's modulus of the vibrating component material is obtained by reverse calculation through the above stiffness coefficients K1 and K2. This method can obtain the material properties of the loudspeaker vibration parts more accurately, so as to design and manufacture the loudspeaker better.
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