钢-CFRP复合管道在内部压力下承载能力的计算模型
Jianjun Shi1, Wenze Wang1, Wangcheng Wei1
1Southwest University of Science and Technology, School of Civil Engineering and Architecture, Mianyang Sichuan, 621010, China.
Heliyon
|March 21, 2024
概括
用碳纤维增强聚合物 (CFRP) 包裹的钢管为石油和天然气运输提供了一个新的解决方案. 这项研究验证了一个计算模型,用于预测它们的内部压力容量,确保管道完整性.
科学领域:
- 材料科学与工程 材料科学与工程
- 复合材料 复合材料 复合材料
- 结构工程 结构工程
背景情况:
- 用碳纤维增强聚合物 (CFRP) 包裹的钢管道正在作为石油和天然气基础设施的复合材料获得引力.
- 了解这些复合管在内部压力下的机械行为对于它们的安全和高效应用至关重要.
- 周边拉伸是这些管道在受到内部压力时的主要变形模式.
研究的目的:
- 为了获得钢-CFRP复合材料的拉力构成模型.
- 开发和验证一个计算模型来评估钢CFRP复合管的内部压力容量.
- 通过将其预测与实验结果进行比较来确定计算模型的可靠性.
主要方法:
- 进行了单轴拉伸试验,以收集材料属性数据.
- 混合规则被应用来导出复合材料的拉伸构成模型.
- 使用校准构成模型建立了一个计算模型,以模拟内部压力容量.
主要成果:
- 成功地为钢-CFRP复合材料制造了一种经过验证的抗拉构件模型.
- 计算模型准确地预测了复合管的内部压力容量.
- 在计算模型的理论结果和实验内部压力测试结果之间观察到很高的相关性.
结论:
- 基于衍生构成模型开发的计算模型是评估钢CFRP复合管的内部压力容量的可靠工具.
- 这些发现对石油和天然气行业新型复合管道系统的设计和实际实施具有重大意义.
- 这项研究支持使用CFRP包裹的钢管作为管道维修和运输的可行和可预测的替代方案.
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