Burstein A H, Zika J M, Heiple K G, Klein L
J Bone Joint Surg Am. 1975 Oct;57(7):956-61.
Tension testing of wet bovine haversian cortical bone demonstrated marked plastic behavior. Progressive surface decalcification of this bone with dilute hydrochloric acid resulted in progressive decreases in the tension yield point and the ultimate stress with no change in the yield strain or ultimate strain unless decalcification was complete. The slope of the plastic region remained identical throughout decalcification. These findings are consistent with an elastic-perfectly plastic model for the mineral phase of bone tissue in which the mineral contributes the major portion of the tension yield strength. The slope or stiffness of the plastic region of the stress-strain curve is a function only of the properties of collagen, which itself plays a minor role in the tension yield strength of bone.
湿牛哈弗斯皮质骨的拉伸试验显示出明显的塑性行为。用稀盐酸对该骨进行渐进性表面脱钙，导致拉伸屈服点和极限应力逐渐降低，除非脱钙完成，屈服应变或极限应变不会发生变化。在整个脱钙过程中，塑性区域的斜率保持不变。这些发现与骨组织矿质相的弹性完全塑性模型一致，其中矿物质贡献了拉伸屈服强度的主要部分。应力-应变曲线塑性区域的斜率或刚度仅取决于胶原蛋白的特性，而胶原蛋白本身在骨的拉伸屈服强度中起次要作用。
