CAJ | 학술논문

小提琴共鸣箱作为小提琴发声系统最为核心的部分，其振动状态对小提琴的声学特性起着重要作用。首先对提琴共鸣箱系统进行受力分析并建立其精确模型，然后通过有限元仿真，分析了不同结构参数的小提琴共鸣箱的振动模态及频率响应，并将其与文献中的实验结果进行比较。仿真结果表明，小提琴共鸣箱面板和背板的一些参数，如琴板厚薄、拱高、拱形变化、低音梁和音柱状况及接触刚度等，对共鸣箱振动特征影响大。最后设计了基于加速度传感器的振动测量系统和采用滑弦激励方法，对小提琴共鸣箱的振动特性和频率响应等进行了实验，其结果符合共鸣箱振动有限元仿真和数值分析的结论。该研究为提琴制作者通过琴板几何形状和音柱等调整，改善小提琴共鸣箱振动特性提供了理论参考。
소제금공명상작위소제금발성계통최위핵심적부분，기진동상태대소제금적성학특성기착중요작용。수선대제금공명상계통진행수력분석병건립기정학모형，연후통과유한원방진，분석료불동결구삼수적소제금공명상적진동모태급빈솔향응，병장기여문헌중적실험결과진행비교。방진결과표명，소제금공명상면판화배판적일사삼수，여금판후박、공고、공형변화、저음량화음주상황급접촉강도등，대공명상진동특정영향대。최후설계료기우가속도전감기적진동측량계통화채용활현격려방법，대소제금공명상적진동특성화빈솔향응등진행료실험，기결과부합공명상진동유한원방진화수치분석적결론。해연구위제금제작자통과금판궤하형상화음주등조정，개선소제금공명상진동특성제공료이론삼고。
As the core of violin system, the vibration state of violin sounding box plays a decisive role in acoustic characteristics of violin.In this paper, firstly, an accurate model is established according to the force analysis of vi-olin box, and then vibration mode and frequency response of the whole violin box are analyzed by means of geomet-ric modeling and Finite Element Numerical Simulation.Besides, those results are compared with the results of other researchers.It shows that some of the parameters of violin front plate and back plate of sounding box, such as the thickness, the distribution and change of the height and shape of arch in front plate geometry, status of bass bar and sound-post have great influence on vibration characteristics of violin sounding box.Finally, vibration experiment system based on acceleration sensor is designed.The vibration characteristics and frequency response of violin sounding box while sliding the finger in the fingerboard are measured and analyzed.The results are compared with the one of the finite element simulations.The experimental results verified the finite element simulation and numeri-cal analysis.Consequently, this research provides a feasible way of theoretic for violin makers to improve the vibra-tion characteristics of violin through adjusting plate geometry and sound-post.