在内部压力负载下,对有丝状GFRP管道的应力应变反应进行实验性评估
Costin Nicolae Ilincă1, Ibrahim Naim Ramadan1, Rami Doukeh1
1Mechanical Engineering Department, Petroleum-Gas University of Ploiesti, 100680 Ploiesti, Romania.
Materials (Basel, Switzerland)
|February 13, 2026
概括
本研究通过实验验证了纤维增强聚合物 (FRP) 管道的设计标准. 带有丝卷玻璃FRP (GFRP) 管道表现出圆环主导的响应,证实了ISO 14692等国际设计规范的可靠性.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 土木工程 土木工程是指土木工程.
背景情况:
- 纤维增强聚合物 (FRP) 管道为压力管道提供出色的耐腐蚀性和机械性能.
- 在国际FRP管道标准中的设计假设存在有限的实验验证.
- 玻璃纤维增强聚合物 (GFRP) 管道被广泛采用,需要强大的设计验证.
研究的目的:
- 通过实验验证线绕的GFRP管道中的机械反应和应力分布.
- 评估GFRP管道的行为与ISO 14692,ASME和BS代码的允许应力设计框架的一致性.
- 为FRP管道系统中设计假设的直接验证提供实验数据.
主要方法:
- 在线绕的GFRP管道上进行了拉伸,曲和全尺寸内部压力测试.
- 在轴向和圆周方向使用电阻应变仪来测量高达31bar的变形.
- 通过orthotropic laminate理论推导出实验应力,并将其与标准化设计代码进行比较.
主要成果:
- 在使用范围内,GFRP管道表现出主要是线性弹性反应.
- 周围应力始终超过轴向应力,表明圆环主导的反应.
- 在31巴的实验推导应力 (σa ≈ 15.3 MPa, σh ≈ 18.8 MPa) 与理论模型和设计代码的良好一致性没有失败.
结论:
- 该研究验证了FRP管道系统的标准化允许应力设计方法的适用性.
- 实验发现为基于ISO 14692和补充代码的工程设计决策提供了直接的,有根据的支持.
- 这项研究弥合了理论设计假设和GFRP管道实际性能之间的差距.
相关概念视频
Responses to Salt Stress
14.7K
Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.
14.7K
Internal Loadings in Structural Members: Problem Solving
1.7K
When designing or analyzing a structural member, it is important to consider the internal loadings developed within the member. These internal loadings include normal force, shear force, and bending moment. Engineers can ensure that the structural member can support the applied external forces by calculating these internal loadings.
To illustrate this, let's consider a beam OC of 5 kN, inclined at an angle of 53.13° with the horizontal and supported at both ends. Determine the internal...
To illustrate this, let's consider a beam OC of 5 kN, inclined at an angle of 53.13° with the horizontal and supported at both ends. Determine the internal...
1.7K
Responses to Heat and Cold Stress
14.9K
Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
14.9K
Problem Solving on Stress and Strain
2.0K
Stress is a quantity that describes the magnitude of a force that causes deformation, generally defined as internal force per unit area. When forces pull on an object and cause its elongation, like the stretching of an elastic band, it is called tensile stress. When forces cause the compression of an object, it is known as compressive stress. When an object is being squeezed uniformly from all sides, like a submarine in the depths of the ocean, we call this kind of stress bulk stress (or volume...
2.0K
Stress-Strain Diagram
3.2K
A stress-strain diagram is a crucial tool that graphically displays a material's mechanical characteristics. This diagram is derived from a tensile test performed on a carefully prepared cylindrical specimen. The specimen has two gauge marks inscribed on its central part, and the distance between these marks is known as the gauge length. The cylindrical specimen is placed in a testing machine, which applies an increasing centric load. As this load grows, so does the gauge length. This...
3.2K
Stress: General Loading Conditions
600
To grasp the intricacy of real-world conditions where multiple loads are applied simultaneously to a structure, one might visualize a section passing through a specific point within a body, aligned parallel to the xy plane. This section is subjected to various forces, including original loads, normal forces, and shearing forces.
The shearing force, possessing potential directionality within the plane of the section, is simplified into two component forces running parallel to the x and y axes....
The shearing force, possessing potential directionality within the plane of the section, is simplified into two component forces running parallel to the x and y axes....
600


