There is an increasing interest in Nanofluidic Energy Absorption System (NEAS) due to its high energy absorption density. This work investigated energy absorption characteristics of NEAS based on aerogel. The pressure-volumetric strain curves of the aerogel nanofluidic system are acquired along with those of the zeolite nanofluidic system through the designed testing device. The microscopic responses of both nanofluidic systems under external loads are demonstrated by molecular dynamics simulations. The energy absorption performances of collapse tubes filled with NEAS based on aerogel, zeolite and silica gel, respectively, are compared through finite element analysis. The result shows that the aerogel nanofluidic system has great energy absorption density (EAD), and has a remarkable prospect in the field of anti-crash and buffers. The research promotes further exploration of mechanism and potentials of such new type of energy absorption material for use in aerospace field.

由于其高能量吸收密度，人们对纳米流体能量吸收系统（NEAS）越来越感兴趣。这项工作研究了基于气凝胶的NEAS的能量吸收特性。通过设计的测试装置，获得了气凝胶纳米流体系统的压力-体积应变曲线以及沸石纳米流体系统的压力-体积应变曲线。分子动力学模拟证明了两种纳米流体系统在外部载荷下的微观响应。通过有限元分析比较了分别填充有基于气凝胶，沸石和硅胶的NEAS的塌陷管的能量吸收性能。结果表明，气凝胶纳米流体体系具有很高的能量吸收密度（EAD），在防撞和缓冲领域具有广阔的前景。