剪切增稠液胶囊增强硅橡胶复合材料抗冲击性能的数值模拟研究  

Numerical simulation study on the impact resistance of shear thickeningfluid capsule reinforced silicone rubber composites

作　　者：刘鹏辉 刘忠平[1] 钟发春[1,2] Liu Penghui;Liu Zhongping;Zhong Fachun(Institute of Chemical Materials,Chinese Academy of Engineering Physics,Mianyang 621900;Mianyang Jinwei Material Technology Co.,Ltd.,Mianyang 621024)

机构地区：[1]中国工程物理研究院化工材料研究所,绵阳621900 [2]绵阳今为材料科技有限公司,绵阳621024

出　　处：《化工新型材料》2024年第11期153-157,共5页New Chemical Materials

基　　金：国家自然科学基金青年基金(51803197);中国工程物理研究院化工材料研究所学科基金(SXK-2021-06)。

摘　　要：冲击会对实战条件下武器的安全性和可靠性带来影响,因此必须使用抗冲击材料来提高武器系统的安全性。随着武器装备的高速发展,传统的聚合物抗冲击材料已逐渐不能满足要求,因此需要开发兼顾高效、轻质、智能、多次防护、多功能的抗冲击防护材料。将剪切增稠液(STF)胶囊分散在硅橡胶中制备了新型抗冲击复合材料,应用LS-DYNA程序ALE算法对落锤冲击STF/硅橡胶复合材料的过程进行了动力学建模,通过数值模拟研究了复合材料的抗冲击性能,并讨论了冲击速度、STF液滴分布结构以及吸能液体对复合材料抗冲击性能的影响。Impact can have an impact on the safety and reliability of weapons under actual combat conditions,so impact-resistant materials must be used to improve the safety of weapon systems.With the rapid development of weaponry,traditional polymer impact resistant materials have gradually failed to meet the requirements,so there is a need to develop impact resistant protective materials that take into account high efficiency,light weight,intelligence,multiple protection and multi-functionality.A new type of impact composite material was prepared by dispersing shear thickener liquid capsules in silicone rubber,and the process of impacting shear thickener liquid/silicone rubber composite material with a falling hammer was modelled dynamically by applying the ALE algorithm of the LS-DYNA program.The impact resistance of the composite material was studied through numerical simulation,and the influence of impact velocity,the distribution structure of shear thickener liquid droplet distribution,and the energy-absorbing liquid on the impact resistance of the composite material was also discussed.

关 键 词：剪切增稠液 硅橡胶 复合材料 抗冲击性能 

分 类 号：O357[理学—流体力学]