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相关概念视频

Unsymmetric Loading of Thin-Walled Members: Problem Solving01:07

Unsymmetric Loading of Thin-Walled Members: Problem Solving

169
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...
169
Internal Loadings in Structural Members: Problem Solving01:28

Internal Loadings in Structural Members: Problem Solving

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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...
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Stresses under Combined Loadings01:23

Stresses under Combined Loadings

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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...
228
Distributed Loads: Problem Solving01:21

Distributed Loads: Problem Solving

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Beams are structural elements commonly employed in engineering applications requiring different load-carrying capacities. The first step in analyzing a beam under a distributed load is to simplify the problem by dividing the load into smaller regions, which allows one to consider each region separately and calculate the magnitude of the equivalent resultant load acting on each portion of the beam. The magnitude of the equivalent resultant load for each region can be determined by calculating...
738
Shear and Bending Moment Diagram: Problem Solving01:24

Shear and Bending Moment Diagram: Problem Solving

1.9K
When analyzing a beam supporting concentrated loads and a distributed load, drawing the shear and bending moment diagrams is essential. These diagrams help understand the internal forces and moments acting on the beam, which is crucial for designing safe and efficient structures. Follow these steps to create the shear and bending moment diagrams:
Draw a Free-Body Diagram: Start by drawing a free-body diagram of the entire beam, including the concentrated loads, distributed load, and reaction...
1.9K
Unsymmetric Loading of Thin-Walled Members01:23

Unsymmetric Loading of Thin-Walled Members

148
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...
148

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Updated: Sep 13, 2025

Structural Design and Manufacturing of a Cruiser Class Solar Vehicle
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关于多目标优化方法的研究,用于中心化器的液压成型装载路径.

Zaixiang Zheng1, Zhengjian Pan1, Hui Tan1

  • 1School of Mechanical Engineering, Yangzhou University, Yangzhou 225000, China.

Materials (Basel, Switzerland)
|July 30, 2025
PubMed
概括
此摘要是机器生成的。

优化集中式水力成型包括平衡内部压力和轴向输入. 像NSGA-II和AMGA这样的多目标优化算法有效地产生了优越的负载路径,以获得均的壁厚.

关键词:
集中的中心化器装载路径 装载路径多目标优化多目标优化管道水合成型机 管道水合成型机

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相关实验视频

Last Updated: Sep 13, 2025

Structural Design and Manufacturing of a Cruiser Class Solar Vehicle
14:57

Structural Design and Manufacturing of a Cruiser Class Solar Vehicle

Published on: January 30, 2019

14.0K
Knowledge Based Cloud FE Simulation of Sheet Metal Forming Processes
11:05

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Operation of the Collaborative Composite Manufacturing CCM System
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科学领域:

  • 制造业 工程 制造工程
  • 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:

  • 集中式水力成型对内部压力和轴向料敏感,影响墙壁厚度的均性.
  • 不足够的料导致稀疏和裂;过量料导致加厚和纹.
  • 优化压力和料曲线对于实现均的壁厚至关重要.

研究的目的:

  • 为了自动优化装载路径用于集中式水力成型.
  • 为了比较四个多目标优化算法的性能:NSGA-II,MOPSO,NCGA和AMGA.
  • 通过高效的帕雷托解决方案生成,增强水性成型工艺设计的设计空间.

主要方法:

  • 集成LS-DYNA与NSGA-II,MOPSO,NCGA和AMGA进行自动化优化.
  • 使用最大/最小墙壁厚度作为目标和曲线控制点作为变量.
  • 采用多目标优化来生成加载路径的帕雷托解决方案.

主要成果:

  • NSGA-II,NCGA和AMGA成功生成了优化的水形成路径.
  • 与其他人相比,NSGA-II和AMGA产生了更大,更高质量的帕雷托解决方案集.
  • 莫普索显示过早的收,导致了低于最佳的结果.
  • 为了获得令人满意的帕雷托集,AMGA需要更多的代.

结论:

  • 多目标优化有效地产生了用于集中式水力成型的多种帕雷托解决方案.
  • NSGA-II和AMGA是优化水形成装载路径的有希望的算法.
  • 优化的路径扩大了改进制造工艺的设计可能性.