基于复合弹性体界面粘接强度计算的有限元数值模型构建  

Construction of finite element numerical calculation model for interfacial bonding strength evaluation of composite elastomer

作　　者：杨敏 许永伦 王淑婷 庞云嵩 任琳琳 曾小亮 孙蓉 Yang Min;Xu Yonglun;Wang Shuting;Pang Yunsong;Ren Linlin;Zeng Xiaoliang;Sun Rong(Shenzhen Institute of Advanced Electronic Materials,Shenzhen 518100,Guangdong,China)

机构地区：[1]深圳先进电子材料国际创新研究院,广东深圳518100

出　　处：《中国胶粘剂》2024年第5期33-39,共7页China Adhesives

基　　金：国家自然科学基金项目(52303093);科技部国家重点研发计划(2022YFA1203100);广东省基础与应用基础研究计划(2020B010190004);中国科学院青年创新促进会项目(2019354);广东省重点试验室项目(2014B030301014);深圳市科技研究基金项目(JCYJ20200109114401708)。

摘　　要：基于硅凝胶复合弹性体,构建有限元数值计算模型用于计算其界面粘接强度。该模型包括内聚力和具有Mullins效应的超弹体材料力学模型,分别描述了复合弹性体在剥离时界面处能量损耗和周围材料形变时的能量损耗。使用Abaqus可直接实施算例,其算例所需相关计算参数可通过相应的材料力学表征得到。由于与试验结果即其数据曲线的变化趋势、幅度与区间等相近,证明所构建有限元数值模型具有一定的准确性。这一研究为通过有限元数值计算来预测材料性能提供了新的思路,以取代复杂的试验表征方法。Based on silicone gel composite elastomer,finite element numerical calculation model was constructed to calculate the interfacial bonding strength.This model included cohesive force and mechanical model of hyper elastic materials with Mullins effect,which respectively described the energy loss at the interface of composite elastomers during peeling and the energy loss during deformation of surrounding materials.Abaqus could be used to directly implement examples,and the relevant calculation parameters required for the examples could be obtained through corresponding material mechanics characterization.Due to the similarity in the trend,amplitude,and interval of the data curve with the experimental results,it proved that the constructed finite element numerical model had a certain degree of accuracy.This study provided a new approach for predicting material properties through finite element numerical calculations,which replaced the complex experimental characterization methods.

关 键 词：复合弹性体 界面粘接强度 有限元数值模型 内聚力 Mullins效应 

分 类 号：TQ430.1[化学工程]