Equal-arc shaped bamboo split (EASB) is an ecological material, and the material utilization rate is as high as 85%. With EASB as the basic unit, various arc-shaped products can be manufactured widely. EASB cleverly uses the indispensable drying process in the bamboo industry to manufacture. The bamboo splits deformation mainly undergoes two processes: uniform heating to complete softening and rapid deformation. After the arc is fixed, a wider arc-shaped bamboo split is obtained, with a width up to 100 mm. The sclerenchyma fibers showed displacement along the tensile stress direction, and the distance between vascular bundles was slightly reduced. The parenchyma’s cell wall-to-lumen area ratio was reduced by 19.4%, and cracks and plastic deformation appeared in the cell wall slippage, but there is no evident densification in the bamboo split. EASB overcomes the challenge of use in standard arcs due to its different shapes, while retaining the natural texture and gradient structure of bamboo. Analyzing the deformation in the EASB manufacturing process is beneficial to understanding the EASB deformation law. Moreover, it provides a basis for the later EASB manufacturing process with different radians and biomass biomimetic materials.

等弧形竹节（EASB）是一种生态材料，材料利用率高达85%。以EASB为基本单元，可广泛生产各种弧形产品。EASB巧妙地利用竹业中不可缺少的干燥工艺进行制造。竹子劈裂变形主要经历两个过程：均匀加热至完全软化和快速变形。弧形固定后，得到较宽的弧形竹劈，宽度可达100毫米。厚壁组织纤维沿拉应力方向发生位移，维管束间距略有缩短。薄壁组织的细胞壁与腔面积比减少了19.4%，细胞壁滑移出现裂纹和塑性变形，但竹节没有明显的致密化。EASB 克服了由于形状不同而在标准弧形中使用的挑战，同时保留了竹子的自然纹理和渐变结构。分析EASB制造过程中的变形有利于理解EASB变形规律。并且为后期不同弧度和生物质的EASB制造工艺提供了依据仿生材料。