2D/3D modeling of concrete weight coating to understand its performance including crack development
对混凝土重量涂层进行 2D/3D 建模,以了解其性能,包括裂纹发展
基本信息
- 批准号:518242-2017
- 负责人:
- 金额:$ 7.29万
- 依托单位:
- 依托单位国家:加拿大
- 项目类别:Collaborative Research and Development Grants
- 财政年份:2020
- 资助国家:加拿大
- 起止时间:2020-01-01 至 2021-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The objective of this work is to produce a model that predicts the performance of concrete weight coating (CWC) on submarine pipelines. Full-scale bending, shear, or impact tests to simulate the field conditions are costly and time consuming. When evaluating potential changes to the pipe manufacturing process, a model to reliably predict the impact of the changes is desired. Such a model would help to reduce the burden of full-scale testing by identifying and pre-selecting the most promising manufacturing approaches and combinations to put forward. Several variables must be accounted for, including: the aggregate and cement used, the type of anti-corrosion coating applied to the steel pipe, the type and arrangement of embedded reinforcement, and the method of concrete weight coating application (impingement or compression). All of these variables are in constant flux depending on the geographical location of the installation and the available materials/methods. A micro (µ) mechanical modeling approach is suggested based on the finite discrete element model (FDEM) technology. FDEM combines the advantages of large strain finite elements with those of the discrete elements, allowing for explicitly modelling the propagation of cracks into an originally intact material, as well as the interaction between the different phases and materials. By modelling the physical interactions at the µ-scale, FDEM is able to reproduce the response of the tested material as an emergent property of the model. A µ-characterization of CWC together with standard mechanical tests performed inside a µ x-ray computed tomography machine (µCT) will inform and constrain the development of a FDEM model.
这项工作的目的是建立一个模型来预测海底管道混凝土重量涂层 (CWC) 的性能,在评估潜在变化时,模拟现场条件的全尺寸弯曲、剪切或冲击测试成本高昂且耗时。对于管道制造过程,需要一个能够可靠地预测变化影响的模型,这样的模型将有助于通过识别和预先选择最有希望的制造方法和组合来减轻全面测试的负担。必须考虑几个变量包括:使用的骨料和水泥、钢管上涂敷的防腐涂层的类型、嵌入钢筋的类型和布置以及混凝土重量涂层的涂敷方法(冲击或压缩)所有这些变量都是。建议采用基于有限离散元模型 (FDEM) 技术的微 (μ) 机械建模方法,该方法结合了大应变有限元的优点。那些离散元件,允许用于明确模拟裂纹在原始完整材料中的传播,以及不同相和材料之间的相互作用。通过对 µ 尺度的物理相互作用进行建模,FDEM 能够将测试材料的响应再现为紧急情况。 CWC 的 µ 特性以及 µ X 射线计算机断层扫描机 (µCT) 内进行的标准机械测试将指导和限制 FDEM 模型的开发。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Peterson, Karl其他文献
Peterson, Karl的其他文献
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{{ truncateString('Peterson, Karl', 18)}}的其他基金
Concrete and mortar deterioration and fracture: a forensic approach
混凝土和砂浆的劣化和断裂:法医方法
- 批准号:
RGPIN-2020-07116 - 财政年份:2022
- 资助金额:
$ 7.29万 - 项目类别:
Discovery Grants Program - Individual
Concrete and mortar deterioration and fracture: a forensic approach
混凝土和砂浆的劣化和断裂:法医方法
- 批准号:
RGPIN-2020-07116 - 财政年份:2022
- 资助金额:
$ 7.29万 - 项目类别:
Discovery Grants Program - Individual
Concrete and mortar deterioration and fracture: a forensic approach
混凝土和砂浆的劣化和断裂:法医方法
- 批准号:
RGPIN-2020-07116 - 财政年份:2021
- 资助金额:
$ 7.29万 - 项目类别:
Discovery Grants Program - Individual
Concrete and mortar deterioration and fracture: a forensic approach
混凝土和砂浆的劣化和断裂:法医方法
- 批准号:
RGPIN-2020-07116 - 财政年份:2021
- 资助金额:
$ 7.29万 - 项目类别:
Discovery Grants Program - Individual
Concrete and mortar deterioration and fracture: a forensic approach
混凝土和砂浆的劣化和断裂:法医方法
- 批准号:
RGPIN-2020-07116 - 财政年份:2020
- 资助金额:
$ 7.29万 - 项目类别:
Discovery Grants Program - Individual
Concrete and mortar deterioration and fracture: a forensic approach
混凝土和砂浆的劣化和断裂:法医方法
- 批准号:
RGPIN-2020-07116 - 财政年份:2020
- 资助金额:
$ 7.29万 - 项目类别:
Discovery Grants Program - Individual
Impact of meta-stable chloride hydrate phases on concrete durability at near-freezing temperatures
近冰点温度下亚稳定氯化物水合物相对混凝土耐久性的影响
- 批准号:
RGPIN-2014-05027 - 财政年份:2018
- 资助金额:
$ 7.29万 - 项目类别:
Discovery Grants Program - Individual
Impact of meta-stable chloride hydrate phases on concrete durability at near-freezing temperatures
近冰点温度下亚稳定氯化物水合物相对混凝土耐久性的影响
- 批准号:
RGPIN-2014-05027 - 财政年份:2018
- 资助金额:
$ 7.29万 - 项目类别:
Discovery Grants Program - Individual
2D/3D modeling of concrete weight coating to understand its performance including crack development
对混凝土重量涂层进行 2D/3D 建模,以了解其性能,包括裂纹发展
- 批准号:
518242-2017 - 财政年份:2018
- 资助金额:
$ 7.29万 - 项目类别:
Collaborative Research and Development Grants
2D/3D modeling of concrete weight coating to understand its performance including crack development
对混凝土重量涂层进行 2D/3D 建模,以了解其性能,包括裂纹发展
- 批准号:
518242-2017 - 财政年份:2018
- 资助金额:
$ 7.29万 - 项目类别:
Collaborative Research and Development Grants
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2D/3D modeling of concrete weight coating to understand its performance including crack development
对混凝土重量涂层进行 2D/3D 建模,以了解其性能,包括裂纹发展
- 批准号:
518242-2017 - 财政年份:2018
- 资助金额:
$ 7.29万 - 项目类别:
Collaborative Research and Development Grants