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夹层热钢化玻璃裂纹形态表征及开裂后力学行为
作者:王星尔1 2  健1 2 王翰坤1 2 
单位:(1. 上海交通大学船舶海洋与建筑工程学院 上海200240 2. 上海交通大学海洋工程国家重点实验室 上海200240) 
关键词:热钢化玻璃 裂纹形态 开裂后行为 Voronoi分布 
分类号:TU382
出版年,卷(期):页码:2019,47(8):0-0
DOI:
摘要:

 首先对随机分布的热钢化玻璃裂纹形态的表征方法进行研究,基于碎片面数、体积、球度参数的数据统计参数对裂纹形态分布特征进行控制,并采用Voronoi分布方法对裂纹形态进行表征。其次,引入组合有限离散元法来建立处于开裂后状态的夹层玻璃数值模型,并对开裂层碎片的Voronoi分布进行重构,结合试验结果研究热钢化玻璃碎片间嵌合作用及其关键参数对夹层玻璃后续力学行为的影响。结果表明:仅考虑碎片间的摩擦作用将显著低估夹层玻璃开裂后刚度,碎片间残余应变能和厚度方向上的不规则形态使碎片间相互作用仍然较强,宜用弱化的内聚模型来描述。通过内聚模型关键参数的迭代分析,建立了可较好预测夹层玻璃开裂后行为的组合有限离散元模型,并确定了关键参数对开裂后行为的作用规律。

基金项目:
国家重点研发计划项目(2017YFC0806100);上海市科委科研计划项目(17DZ1200306);上海市教委科研创新项目(14ZZ027)。
作者简介:
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