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延性节点在全过程火灾和地震中的性能
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作者 孙博涵 刘彧 《建模与仿真》 2025年第8期65-75,共11页
梁端节点是确保建筑结构在火灾工况下保持完整性的最为重要的构件。为了增强结构的韧性,本文提出了一种新型延性节点,其变形能力高于工程常用节点。本文首先介绍了这种延性节点的设计。接着使用Abaqus建立了带有延性节点的钢框架模型来... 梁端节点是确保建筑结构在火灾工况下保持完整性的最为重要的构件。为了增强结构的韧性,本文提出了一种新型延性节点,其变形能力高于工程常用节点。本文首先介绍了这种延性节点的设计。接着使用Abaqus建立了带有延性节点的钢框架模型来研究延性节点在包括升温和降温的火灾全过程中的性能。模型中采用了包括降温阶段的ISO-834标准火灾曲线进行热力耦合分析,并使用了一个用户子程序VUSDFLD来考虑降温阶段结构钢和高强钢的材料性能。最后,在循环荷载作用下建立了带有延性节点和工程常用端板式、鳍板式连接节点的精细化钢框架模型,来研究延性节点在地震中的性能。 展开更多
关键词 火灾 地震 延性节点 降温阶段
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Bioinspired nanocomposites with self-adaptive mechanical properties 被引量:1
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作者 Grant Kitchen bohan sun sung Hoon Kang 《Nano Research》 SCIE EI CSCD 2024年第2期633-648,共16页
Conventional synthetic materials have fixed mechanical properties and suffer defects,damage,and degradation over time.This makes them unable to adapt to changing environments and leads to limited lifecycles.Recently,s... Conventional synthetic materials have fixed mechanical properties and suffer defects,damage,and degradation over time.This makes them unable to adapt to changing environments and leads to limited lifecycles.Recently,self-adaptive materials inspired by natural materials have emerged as a solution to address these problems.With the ability to change their mechanical properties based on changing mechanical environments,repairing defects,and maintaining their mechanical properties,these materials can lead to improved performance while decreasing waste.In this review,we explore self-adaptive phenomena found in nature that have inspired the development of synthetic self-adaptive materials,and the mechanisms that have been employed to create the next generation of materials.The potential applications of these materials,the challenges that existing approaches face,and future research opportunities are also discussed. 展开更多
关键词 NANOCOMPOSITES self-adaptive materials bioinspired materials force-activated RESILIENCE
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