In the natural environment, the horns of yak possess remarkable structural mechanical properties to protect the head from injury. In this paper, quasi-static compression and dynamic impact tests were conducted on yak horn in different regions under axial and lateral conditions to evaluate mechanical properties such as elastic modulus, ultimate strength and energy absorption. Meanwhile, the failure deformation mechanism under both low and high strain rates is explored. Moreover, experimental analysis of the correlation among mechanical properties, sampling position, strain rate and loading direction was conducted. Fracture surface of horn was observed with the scanning electron microscope (SEM). Research data demonstrate that specific energy absorption and mechanical properties are correlated with sampling position. Under quasi-static compression and dynamic impact, clear anisotropy behavior of horn was observed, which is evidently reflected in the load-displacement curve. Mechanical properties such as elastic modulus and ultimate strength are different under quasi-static compression and dynamic impact. The failure mode of lamellar buckling and delamination existed in the axial failure process. Brittle fracture and extrusion densification occurred more frequently in the process of lateral failure.

在自然环境中，of牛角具有出色的结构机械性能，可保护头部免受伤害。本文在轴向和横向条件下对different牛角在不同区域进行了准静态压缩和动态冲击试验，以评估机械性能，例如弹性模量，极限强度和能量吸收。同时，探讨了低应变率和高应变率下的破坏变形机理。此外，对力学性能，取样位置，应变率和加载方向之间的相关性进行了实验分析。用扫描电子显微镜（SEM）观察喇叭的断裂表面。研究数据表明，比能量吸收和机械性能与采样位置相关。在准静态压缩和动态冲击下，观察到了清晰的牛角各向异性行为，这在载荷-位移曲线中得到了明显体现。在准静态压缩和动态冲击下，诸如弹性模量和极限强度之类的机械性能有所不同。轴向破坏过程中存在层状屈曲和分层的破坏模式。在横向破坏过程中，脆性断裂和挤压致密化的发生频率更高。