论文标题
纤维双网络的刚度和断裂
Rigidity and fracture of fibrous double networks
论文作者
论文摘要
可调力学和抗断裂性是生物组织的标志，并且在工程材料中高度期望。为了阐明基本机制，我们研究了由僵硬且灵活的网络制成的严格渗透双网络（DN）。当刚性网络刚好高于其刚性渗透阈值和远离该阈值的最小变化时，DN在机械响应中显示出显着的可调性。此外，可以通过改变灵活的网络的浓度来调制DN以更易于扩展，逐渐破裂或更强，以更脆弱的方式破裂。
Tunable mechanics and fracture resistance are hallmarks of biological tissues and highly desired in engineered materials. To elucidate the underlying mechanisms, we study a rigidly percolating double network (DN) made of a stiff and a flexible network. The DN shows remarkable tunability in mechanical response when the stiff network is just above its rigidity percolation threshold and minimal changes far from this threshold. Further, the DN can be modulated to either be extensible, breaking gradually, or stronger, breaking in a more brittle fashion by varying the flexible network's concentration.
