论文部分内容阅读
基于具有开孔泡沫骨架的双连续相复合材料(IPC)的细观结构,提出了一种十四面体弹性地基梁力学模型,结合最小势能原理推导了该IPC的弹性模量预测公式。根据文献给出的实验材料参数进行算例分析,结果表明,理论估算结果与实验值吻合良好,证明了该模型的有效性。在此基础上,进一步讨论了不同骨架材料体积含量和支柱截面形状对IPC弹性模量的影响。本文给出的半经验理论模型为表征具有开孔泡沫骨架的IPC的弹性性能提供了新思路,也为进一步预测IPC的强度性能和热物理性能奠定了基础。
Based on the mesostructure of the bicontinuous phase composite (IPC) with open-cell foam skeleton, a 14-dodecahedron elastic foundation beam mechanics model is proposed. The elastic modulus prediction formula of the IPC is deduced based on the principle of minimum potential energy. The experimental results show that the theoretical results are in good agreement with the experimental data, and the validity of the model is proved. On the basis of this, the influence of the volume content of different skeletal materials and the cross-sectional shape of struts on the elastic modulus of IPC was further discussed. The semi-empirical theoretical model presented in this paper provides a new idea for characterizing the elastic properties of IPC with open-cell foam skeleton and also provides a basis for further predicting IPC’s strength and thermophysical properties.