基于结构化材料调控耗能属性的可适应结构作用机理和设计方法研究

批准号:
52008174
项目类别:
青年科学基金项目
资助金额:
24.0 万元
负责人:
胡楠
依托单位:
学科分类:
工程材料
结题年份:
2023
批准年份:
2020
项目状态:
已结题
项目参与者:
胡楠
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中文摘要
提高结构韧性将成为我国在开发下一代智能基础设施过程中的一个重要目标。增强结构韧性的其中一方面就是改善结构材料的适应性,而这种适应性可通过开发具备可变刚度属性的材料实现。本项目将把前沿新兴课题(结构化材料)与传统结构材料设计相融合,具体选取受弯型结构化材料及其在轴压作用下展示的变形特征和耗能属性为研究主体,通过结合理论建模、计算模拟和力学实验等手段,深入且系统地揭示结构化材料在单元层面的力学耗能机理和在构件层面的耗能调控性,探讨单元的空间设计原理和方法。在此基础之上,尝试将结构化材料构件与其他常规土木材料结合,开发具有可调节耗能属性的组合夹芯结构,并对其他智能功能(自感应,可产能)进行一定尝试,使之在不降低强度的前提下,增加韧性甚至减轻其重量,提高材料使用效率从而节省资源。本项目的意义在于开拓结构材料的新方向,预期成果将为结构化材料在大型高性能多功能结构领域奠定一定理论基础和设计方法。
英文摘要
A critical element for improving the resilience of our nation’s infrastructure is to develop next-generation adaptive structural systems to achieve a targeted performance during both normal operation and extreme events. However, such adaptive function demands flexibility, which is not the case for conventional infrastructure materials that have long been designed to achieve a specified performance target and their characteristics remain unchanged once in operation. As we enter the era of additive manufacturing, it has become possible to create the new class of materials and structures with customized geometries and tailored properties, which motivates us to revisit the fundamental principles and methods of the structural design. This project attempts to take a transformative approach by bridging the recent advances in the design of architected materials with the uncharted territory of adaptive construction materials. The adaptive feature in structural components will be achieved by harnessing buckling of modular elements, the resulting tailorable stiffness and tunable energy absorption. The objective of the project is to understand the fundamental mechanism of the contact-induced energy absorption in architected materials and to generate the fundamental design principles of using architected materials in a larger structural component. This objective will be achieved by conducting three specific tasks: 1) deformation control and energy absorption of architected building blocks, 2) tailorable energy absorption using architected materials in a larger domain, and 3) structural design with architected materials for improved functionalities. Throughout these tasks, we will pursue a unified material-structure design strategy to interactively investigate the relationship between local material architecture and global structural behavior. This transformational research will shift the paradigm of structural design by using architected materials to achieve a fine-tuned form of predictable failure and controllable flexibility at the structural level. The findings of the project will impact design methodologies of civil engineering materials and structures with tailorable and repairable failure through tunable topology and hierarchy, a major step toward developing resilient infrastructure involving the ability of self-sensing, self-powering and self-healing.
期刊论文列表
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专利列表
DOI:10.1016/j.compstruct.2023.116850
发表时间:2023-02
期刊:Composite Structures
影响因子:6.3
作者:Binglin Xie;Xinyue Li;Xinyu Zhao;Nan Hu
通讯作者:Binglin Xie;Xinyue Li;Xinyu Zhao;Nan Hu
DOI:10.1016/j.mechrescom.2023.104201
发表时间:2023-10
期刊:Mechanics Research Communications
影响因子:2.4
作者:Zhixiong Li;Pan Liu;Baixi Chen;Tongtong Ye;Yuan- Fang Zhang;Nan Hu
通讯作者:Zhixiong Li;Pan Liu;Baixi Chen;Tongtong Ye;Yuan- Fang Zhang;Nan Hu
DOI:https://doi.org/10.1016/j.commatsci.2022.111834
发表时间:2022
期刊:Computational Materials Science
影响因子:--
作者:Binglin Xie;Xianhua Yao;Weining Mao;Mohammad Rafiei;Nan Hu
通讯作者:Nan Hu
DOI:10.1016/j.engstruct.2023.116368
发表时间:2023-09
期刊:Engineering Structures
影响因子:5.5
作者:Zee Leong;Rong-Shen Chen;Zijie Xu;Yang-Cheng Lin;Nan Hu
通讯作者:Zee Leong;Rong-Shen Chen;Zijie Xu;Yang-Cheng Lin;Nan Hu
DOI:https://doi.org/10.1016/j.matdes.2022.111262
发表时间:2022
期刊:Materials & Design
影响因子:--
作者:Xianhua Yao;Man Chen;Junxian Zhao;Yunlan Zhang;Nan Hu
通讯作者:Nan Hu
面向极端荷载工况的建构化复合材料结构失效机理与设计理论
- 批准号:--
- 项目类别:省市级项目
- 资助金额:15.0万元
- 批准年份:2024
- 负责人:胡楠
- 依托单位:
国内基金
海外基金
