二胡弓杆在改革家手中,经历了弓尖弯头、中部弯曲、根部“之”字弯折以及增设微调等,结构在很大程度上得到改善,更加适应演奏的需要。然而弓杆的长短、粗细,在二胡标准中虽有规定,但多是经验数据。本文试图用弹性测试及力学计算,分析弓杆的最佳规格,为弓杆的标准寻求一点理论依据。 (一) 弓杆的弹性测试当手指施加于弓毛较大的压力时,弓根部与弓毛呈近似60°角,弓杆弹性变形成弯月 Erhu bow in the hands of the reformer, experienced a bow bend, the middle of the bend, the root of the “word” bending and additional fine-tuning, the structure is largely improved, more suited to the needs of the performance. However, the length of the bow, thickness, although the provisions of the standard in the erhu, but mostly empirical data. This paper attempts to use elastic test and mechanical calculation, analysis of the best specifications of the bow, bow standards to seek a little theoretical basis. (A) the elastic test of the bow When the finger imposes a greater pressure on the bow hair, the bow and bow hair is approximately 60 ° angle, the bow flexible deformation into a meniscus