Modeling Frequency- and Temperature-Invariant Dissipative Behaviors of Randomly Entangled Carbon Nanotube Networks under Cyclic Loading

Recent experiments have shown that entangled networks of carbon nanotubes exhibit temperature- and frequency-invariant dissipative behaviors under cyclic loading. We have performed coarse-grained molecular dynamics simulations which show that these intriguing phenomena can be attributed to the unstable attachments/detachments between individual carbon nanotubes induced by van der Waals interactions. We show that this behavior can be described by a triboelastic constitutive model. This study highlights the promise of carbon nanomaterials for energy absorption and dissipation under extreme conditions.

最近的实验证明了碳 nanotubes 的纠缠的网络在周期的装载下面展出温度不变、频率不变的消散的行为。我们执行了证明这些吸引人的现象能被归因于在货车 der Waals 相互作用导致的单个碳 nanotubes 之间的不稳定的附件 / 分开的纹理粗糙的分子的动力学模拟。我们证明这行为能被 triboelastic 描述组成的模型。这研究在极端条件下面为精力吸收和驱散加亮碳 nanomaterials 的诺言。