基于凝聚性元素配方的不同接口上的冰载荷的数值研究.
Wenqiang Xing1, Shengyi Cong2,3, Xianzhang Ling1
1School of Civil Engineering, Harbin Institute of Technology, Harbin, 150090, Heilongjiang, China.
Scientific reports
|September 2, 2023
概括
这项研究调查了北极海洋结构上的冰负载,发现结构形状显著影响冰的力量. 了解冰结构相互作用对于设计更安全的北极海上设施至关重要.
科学领域:
- 北极工程公司的北极工程.
- 海洋结构 海洋结构
- 冰的机制 冰的机制
背景情况:
- 北极地区不断增加的海洋活动需要可靠的海洋结构设计.
- 现有的冰荷载研究经常使用凝聚性元素模型,但很少解决结构形式的影响.
- 需要对考虑各种接口几何形状的冰载荷有全面的了解.
研究的目的:
- 调查结构形状对影响海上结构的冰载荷的影响.
- 开发和验证用于模拟冰结构相互作用的三维有限元素模型.
- 探索不同的接口几何如何影响冰荷载和故障过程.
主要方法:
- 使用凝聚性元素方法开发三维有限元素模型.
- 对数值结果与现场测试数据和以前的数值模型进行验证.
- 进行结构宽度,倾斜角度,冰速和结构粗性的参数研究.
主要成果:
- 数字模拟量化了不同接口几何结构的结构上的冰负载.
- 参数研究揭示了结构参数对水平冰力和冰盖破裂的影响.
- 开发了简化的图表,说明了界面上的冰负载分布.
结论:
- 结构形式是影响北极海洋结构冰荷重的关键因素.
- 开发的有限元模型为模拟冰结构相互作用提供了经过验证的方法.
- 这些发现有助于改进在冰冷环境中的海洋结构的设计方法.
相关概念视频
Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity
290
Deformation occurs in axial and transverse directions when an axial load is applied to a slender bar. This deformation impacts the cubic element within the bar, transforming it into either a rectangular parallelepiped or a rhombus, contingent on its orientation. This transformation process induces shearing strain. Axial loading elicits both shearing and normal strains. Applying an axial load instigates equal normal and shearing stresses on elements oriented at a 45° angle to the load axis.
290
Internal Loadings in Structural Members: Problem Solving
1.3K
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...
1.3K
Design of Columns under a Centric Load
141
The design of columns under centric load is a fundamental aspect of structural engineering and is critical for ensuring the stability and integrity of structures. Euler's and Secant's formulas are central to understanding and calculating the critical load and deformation behaviors of columns, providing a basis for safe and effective structural design.
Euler's formula is applicable under the assumption that the column is a perfect, straight, homogenous prism, and it is operating...
Euler's formula is applicable under the assumption that the column is a perfect, straight, homogenous prism, and it is operating...
141
Stress: General Loading Conditions
333
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....
333
Stresses under Combined Loadings
173
When analyzing a bent tube with a circular cross-section subjected to multiple forces, it is crucial to determine the stress distribution in order to maintain structural integrity under varied load conditions.
The process begins by slicing the tube at critical points and analyzing the internal forces and stress components at these sections, focusing on the centroid. Normal stresses, generated by axial forces and bending moments, are either compressive or tensile and vary across the section from...
The process begins by slicing the tube at critical points and analyzing the internal forces and stress components at these sections, focusing on the centroid. Normal stresses, generated by axial forces and bending moments, are either compressive or tensile and vary across the section from...
173
Euler's Formula for Pin-Ended Columns
344
In structural engineering, the stability of columns under compressive axial loads is a critical consideration, described as buckling. A typical example involves a column PQ, which is pin-connected at both ends and subjected to a centric axial load F applied at one end, with a reaction force of F' = -F at the other end. Here, it is crucial to understand that when an applied load exceeds the critical load, buckling occurs as the system becomes unstable.
To calculate the critical load,...
To calculate the critical load,...
344


