相关实验视频
Updated: Jun 15, 2025

09:17
Surrogate Model Development for Digital Experiments in Welding
Published on: March 28, 2025
728
基于神经网络的优化模型可以预测形波纹钢网的剪切强度
Mazen Shrif1, Samer Barakat1, Zaid Al-Sadoon1
1Department of Civil and Environmental Engineering, College of Engineering, University of Sharjah, United Arab Emirates.
Heliyon
|August 22, 2024
概括
波纹钢网增强了梁的强度和效率. 一个优化的人工神经网络 (ANN) 模型准确地预测了剪切强度,优于现有方法,波纹角度为35-45°,最大限度地提高了性能.
科学领域:
- 结构工程 结构工程
- 材料科学 材料科学 材料科学
- 计算力学 计算力学 计算力学
背景情况:
- 波纹网提高了梁状成员的剪切强度,稳定性和效率.
- 现有的形波纹钢网 (TCSW) 模型存在局限性.
研究的目的:
- 开发一个优化的人工神经网络 (ANN) 模型,用于预测具有TCSW的钢梁的剪切强度.
- 将ANN模型的性能与现有的代码和分析模型进行比较.
主要方法:
- 利用了206个实验结果的数据库.
- 采用六个几何和材料参数作为输入和剪切强度作为输出.
- 应用的超参数优化技术:贝叶斯优化 (BO),L-BFGS,火算法 (FA) 和非洲水牛优化 (ABO).
主要成果:
- 非洲水牛优化-ANN (ABO-ANN) 模型表现出卓越的有效性.
- 开发的ANN模型在预测方面显著优于现有的代码和分析模型.
- 灵敏度分析揭示了影响剪切强度的关键参数相互作用.
结论:
- 优化的ANN模型提供了更准确的TCSW剪切强度估计.
- 35-45°之间的波纹角被确定为最大化剪切强度的最佳.
- 该研究强调了机器学习在结构工程分析中的潜力.
相关概念视频
Unsymmetric Loading of Thin-Walled Members: Problem Solving
96
The shear center of a channel section with uniform thickness, height, and width, is determined by computing the shear force in the member and calculating the moments of inertia of the sections.
To compute the shear forces, find the shear flow at a specific distance from the endpoint using the vertical shear and the moment of inertia values. The total shear force on the flange is calculated by integrating the shear flow from one end of the flange to the other.
Next, calculate the moments of...
To compute the shear forces, find the shear flow at a specific distance from the endpoint using the vertical shear and the moment of inertia values. The total shear force on the flange is calculated by integrating the shear flow from one end of the flange to the other.
Next, calculate the moments of...
96
Yield Criteria for Ductile Materials under Plane Stress
157
In designing structural elements and machine parts using ductile materials, it is crucial to ensure that these components withstand applied stresses without yielding. Yielding is initially determined through a tensile test, which evaluates the material's response to uniaxial stress. However, tensile stress is insufficient when components face biaxial or plane stress conditions This condition requires advanced criteria to predict failure.
The Maximum Shearing Stress Criterion, also known as...
The Maximum Shearing Stress Criterion, also known as...
157
Mechanical Characteristics of Steel
410
The mechanical characteristics of steel are assessed through various tests that evaluate its strength, toughness, and flexibility. These tests include tension, torsion, impact, bending, and hardness assessments, each providing crucial information about steel's suitability for specific applications.
The tension test is fundamental for determining tensile strength. In this test, a steel specimen is stretched using a gripping device until it breaks. The data collected during this test are used...
The tension test is fundamental for determining tensile strength. In this test, a steel specimen is stretched using a gripping device until it breaks. The data collected during this test are used...
410
Thin-Walled Hollow Shafts
176
In analyzing a thin-walled hollow shaft subjected to torsional loading, a segment with width dx is isolated for examination. Despite its equilibrium state, this segment faces torsional shearing forces at its ends. These forces are quantitatively described by the product of the longitudinal shearing stress on the segment's minor surface and the area of this surface, leading to the concept of shear flow. This shear flow is consistent throughout the structure, indicating a uniform distribution...
176
Unsymmetric Loading of Thin-Walled Members
101
Thin-walled members with non-symmetrical cross-sections are vital to engineering structures, offering material efficiency and structural integrity. However, unsymmetrical loading on these members leads to complex stress distributions, resulting in simultaneous bending and twisting can cause deformation or structural failure. The interaction between bending and twisting requires detailed analysis to ensure structural resilience.
The concept of the shear center is crucial in countering the...
The concept of the shear center is crucial in countering the...
101
Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity
256
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.
256

