Failure of steel sandwich structures in compression: Modelling and testing

钢夹层结构受压失效:建模和测试

基本信息

  • 批准号:
    RGPIN-2017-04509
  • 负责人:
  • 金额:
    $ 1.68万
  • 依托单位:
  • 依托单位国家:
    加拿大
  • 项目类别:
    Discovery Grants Program - Individual
  • 财政年份:
    2017
  • 资助国家:
    加拿大
  • 起止时间:
    2017-01-01 至 2018-12-31
  • 项目状态:
    已结题

项目摘要

The transportation industry is a significant contributor to global green-house gas emissions. The shipping industry in specific currently accounts for approximately 3% of CO2 emissions, and this number is predicted to rise to 18% by 2050. If we can reduce the weight of vehicles, we will reduce the fuel consumption. In some types of ships, the ratio of structural steel weight to total weight is very large, for example 40-60% in container ships, ferries and cruise ships. It is possible to decrease some of that weight by using lightweight structures. Steel sandwich panels are lightweight, relatively cheap, recyclable and easy to implement in large structures like ships, but also bridges and buildings. A type which is easy to produce on a large scale is one where unidirectional stiffeners in the core are laser-welded to the face plates. A highly optimized version of the core shape consists of vertical stiffeners, the so-called webs, forming a web-core sandwich panel. In order to be able to use these panels as load-carrying members safely, their mechanical behaviour needs to be better understood. This proposal focuses on their failure under in-plane compressive loading, both uni-axial and bi-axial. The behaviour is complex, non-linear and influenced by numerous factors. These panels are especially sensitive to loading perpendicular to the webs, since the voids in the core can be empty, which results in very low transverse shear stiffness and causes unique structural features. The behaviour will be studied using numerical and experimental methods. Furthermore, this proposal aims to develop an effective strength prediction method that can model the progress of the failure and the load redistribution to the surrounding structure in a large assembly, e.g. a ship. The method will be based on equivalent single-layer theory (ESL) and nonlinear homogenized stiffnesses. The method will be implemented via user-defined subroutine in commercial finite element method (FEM) software, thus the design companies do not need to purchase additional software packages. The time savings are enormous in comparison with alternative FEM analyses where the topology of the panels is explicitly modelled. Thick-face effect and modified couple stress theory will be potentially used within the ESL method in the case of very low shear stiffness of the panels and for cases where continuum assumption is not strictly valid. In addition, methods for ultimate strength will be developed, which will allow the determination of the reserve strength of the panels, i.e. the difference between first and final failure. The developed methods will be validated with experiments. For the first time the tests will be carried out on the full-scale panels. The research program will train engineers who will be specialized in numerical and experimental methods in solid mechanics and will possess a broad understanding of structural analysis.
交通运输业是全球温室气体排放的重要贡献者。具体来说,航运业目前约占二氧化碳排放量的3%,预计到2050年这一数字将上升到18%。如果我们能减轻车辆的重量,我们就能减少燃料消耗。在某些类型的船舶中,结构钢重量占总重量的比例非常大,例如集装箱船,渡轮和游轮中的40-60%。通过使用轻量化结构可以减少一些重量。钢夹层板重量轻,相对便宜,可回收,易于在船舶等大型结构中实施,也适用于桥梁和建筑物。一种易于大规模生产的类型是将核心中的单向加强筋激光焊接到面板上。核心形状的高度优化版本由垂直加强筋组成,即所谓的腹板,形成一个网芯夹层板。为了能够安全地使用这些面板作为承重构件,需要更好地了解它们的力学行为。本文主要研究了它们在单轴和双轴平面内压缩载荷作用下的破坏。这种行为是复杂的、非线性的,受许多因素的影响。这些面板对垂直于腹板的荷载特别敏感,因为核心的空隙可以是空的,这导致非常低的横向剪切刚度,并产生独特的结构特征。这种行为将用数值和实验方法进行研究。此外,本提案旨在开发一种有效的强度预测方法,可以模拟大型装配(如船舶)中破坏过程和荷载向周围结构的再分配。该方法将基于等效单层理论和非线性均质刚度。该方法将在商业有限元软件中通过用户自定义子程序实现,因此设计公司不需要额外购买软件包。与其他的有限元分析相比,节省的时间是巨大的,其中面板的拓扑结构是明确建模的。在面板剪切刚度非常低的情况下,连续介质假设不严格有效的情况下,将有可能在ESL方法中使用厚面效应和修正的耦合应力理论。此外,将开发极限强度的方法,这将允许确定面板的储备强度,即第一次和最终破坏之间的差异。所开发的方法将通过实验加以验证。测试将首次在全尺寸的面板上进行。该研究项目将培养专门从事固体力学数值和实验方法的工程师,并将对结构分析有广泛的理解。

项目成果

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Jelovica, Jasmin其他文献

A homogenization method for geometric nonlinear analysis of sandwich structures with initial imperfections
Taguchi-based experimental investigation into weld cladding of Ni-WC MMC overlays by CMT process.
Nonlinear transient thermoelastic response of FGM plate under sudden cryogenic cooling
  • DOI:
    10.1016/j.oceaneng.2021.108875
  • 发表时间:
    2021-03-25
  • 期刊:
  • 影响因子:
    5
  • 作者:
    Babaee, Alireza;Jelovica, Jasmin
  • 通讯作者:
    Jelovica, Jasmin

Jelovica, Jasmin的其他文献

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{{ truncateString('Jelovica, Jasmin', 18)}}的其他基金

Failure of steel sandwich structures in compression: Modelling and testing
钢夹层结构受压失效:建模和测试
  • 批准号:
    RGPIN-2017-04509
  • 财政年份:
    2022
  • 资助金额:
    $ 1.68万
  • 项目类别:
    Discovery Grants Program - Individual
Failure of steel sandwich structures in compression: Modelling and testing
钢夹层结构受压失效:建模和测试
  • 批准号:
    RGPIN-2017-04509
  • 财政年份:
    2021
  • 资助金额:
    $ 1.68万
  • 项目类别:
    Discovery Grants Program - Individual
NSERC/SEASPAN Industrial Research Chairs in intelligent and green marine vessels (IGMVs): Advanced Tools and Techniques for Multiphysics Prediction and Design Optimization
NSERC/SEASPAN 智能和绿色船舶 (IGMV) 工业研究主席:多物理场预测和设计优化的先进工具和技术
  • 批准号:
    550069-2019
  • 财政年份:
    2021
  • 资助金额:
    $ 1.68万
  • 项目类别:
    Industrial Research Chairs
NSERC/SEASPAN Industrial Research Chairs in intelligent and green marine vessels (IGMVs): Advanced Tools and Techniques for Multiphysics Prediction and Design Optimization
NSERC/SEASPAN 智能和绿色船舶 (IGMV) 工业研究主席:多物理场预测和设计优化的先进工具和技术
  • 批准号:
    550069-2019
  • 财政年份:
    2020
  • 资助金额:
    $ 1.68万
  • 项目类别:
    Industrial Research Chairs
Failure of steel sandwich structures in compression: Modelling and testing
钢夹层结构受压失效:建模和测试
  • 批准号:
    RGPIN-2017-04509
  • 财政年份:
    2020
  • 资助金额:
    $ 1.68万
  • 项目类别:
    Discovery Grants Program - Individual
Failure of steel sandwich structures in compression: Modelling and testing
钢夹层结构受压失效:建模和测试
  • 批准号:
    RGPIN-2017-04509
  • 财政年份:
    2019
  • 资助金额:
    $ 1.68万
  • 项目类别:
    Discovery Grants Program - Individual
Failure of steel sandwich structures in compression: Modelling and testing
钢夹层结构受压失效:建模和测试
  • 批准号:
    RGPIN-2017-04509
  • 财政年份:
    2018
  • 资助金额:
    $ 1.68万
  • 项目类别:
    Discovery Grants Program - Individual
Effective structural analysis and optimization of a cargo ship
货船的有效结构分析和优化
  • 批准号:
    531446-2018
  • 财政年份:
    2018
  • 资助金额:
    $ 1.68万
  • 项目类别:
    Engage Grants Program
Topology optimization of a bicycle storage unit using vectorized problem formulation
使用矢量化问题公式对自行车存储单元进行拓扑优化
  • 批准号:
    514711-2017
  • 财政年份:
    2017
  • 资助金额:
    $ 1.68万
  • 项目类别:
    Engage Grants Program

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  • 批准号:
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相似海外基金

Failure of steel sandwich structures in compression: Modelling and testing
钢夹层结构受压失效:建模和测试
  • 批准号:
    RGPIN-2017-04509
  • 财政年份:
    2022
  • 资助金额:
    $ 1.68万
  • 项目类别:
    Discovery Grants Program - Individual
Failure of steel sandwich structures in compression: Modelling and testing
钢夹层结构受压失效:建模和测试
  • 批准号:
    RGPIN-2017-04509
  • 财政年份:
    2021
  • 资助金额:
    $ 1.68万
  • 项目类别:
    Discovery Grants Program - Individual
Failure of steel sandwich structures in compression: Modelling and testing
钢夹层结构受压失效:建模和测试
  • 批准号:
    RGPIN-2017-04509
  • 财政年份:
    2020
  • 资助金额:
    $ 1.68万
  • 项目类别:
    Discovery Grants Program - Individual
Failure of steel sandwich structures in compression: Modelling and testing
钢夹层结构受压失效:建模和测试
  • 批准号:
    RGPIN-2017-04509
  • 财政年份:
    2019
  • 资助金额:
    $ 1.68万
  • 项目类别:
    Discovery Grants Program - Individual
Failure of steel sandwich structures in compression: Modelling and testing
钢夹层结构受压失效:建模和测试
  • 批准号:
    RGPIN-2017-04509
  • 财政年份:
    2018
  • 资助金额:
    $ 1.68万
  • 项目类别:
    Discovery Grants Program - Individual
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连续钢-混凝土组合梁中间支撑钢筋混凝土桥面设计技术研究
  • 批准号:
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  • 财政年份:
    1999
  • 资助金额:
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  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
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1) 钢结构分析、设计和制造集成系统 2) 先进单向双壳夹层板系统的开发
  • 批准号:
    36634-1994
  • 财政年份:
    1996
  • 资助金额:
    $ 1.68万
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