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相关概念视频

Frames: Problem Solving II01:26

Frames: Problem Solving II

228
Consider a hydraulic hoist supporting a load of 1 kN. Assuming a simplified schematic representation of this frame structure, the force acting on BD and BF members can be determined.
228
Frames01:30

Frames

551
Frames are essential components of various mechanical and structural systems used daily. These structures are known for their stability and ability to bear heavy loads. A frame is constructed using two-force and multi-force members, interconnected using pin joints. In contrast, trusses are made entirely of two-force members.
Frames are versatile and widely used in various applications such as structural supports for beams and columns, automobile chassis construction, and in the construction...
551
Bending of Members Made of Several Materials01:08

Bending of Members Made of Several Materials

148
In analyzing a structural member composed of two different materials with identical cross-sectional areas, it is crucial to understand how their distinct elastic properties affect the member's response under load. The analysis involves assessing stress and strain distributions using the transformed section concept, which accounts for variations in material properties.
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each...
148
Method of Sections01:30

Method of Sections

645
Consider a truss structure, as shown in the figure.
645
Frames: Problem Solving I01:24

Frames: Problem Solving I

470
Consider a jib crane with an external load suspended from the pulley. The dimensions of the crane members are shown in the figure. A systematic analysis of the frame structure is required to determine the reaction forces at the pin joints, assuming that the pulleys are frictionless.
470
Statically Indeterminate Problem Solving01:16

Statically Indeterminate Problem Solving

378
Statically indeterminate problems are those where statics alone can not determine the internal forces or reactions. Consider a structure comprising two cylindrical rods made of steel and brass. These rods are joined at point B and restrained by rigid supports at points A and C. Now, the reactions at points A and C and the deflection at point B are to be determined. This rod structure is classified as statically indeterminate as the structure has more supports than are necessary for maintaining...
378

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A Millimeter Scale Flexural Testing System for Measuring the Mechanical Properties of Marine Sponge Spicules
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使用硬度分离方法识别多跨坚固框架的参数识别.

Feng Xiao1, Yu Yan1, Xiangwei Meng1

  • 1Department of Civil Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.

Sensors (Basel, Switzerland)
|March 28, 2024
PubMed
概括
此摘要是机器生成的。

本研究介绍了一种刚性分离方法,以有效地识别复杂的多跨度刚性框架中的参数. 该方法通过分析子结构来降低计算负载,提高识别的准确性和速度.

关键词:
关节和肢体损伤损伤多跨度刚性框架的框架.参数识别 参数识别静态响应是一种静态响应.硬度分离方法的硬度分离方法

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科学领域:

  • 结构工程 结构工程
  • 计算力学 计算力学 计算力学
  • 有限元分析 有限元分析

背景情况:

  • 由于结构复杂性,多跨度刚性框架对参数识别提出了重大挑战.
  • 高计算工作负载往往阻碍了高效的分析和准确的参数估计.

研究的目的:

  • 开发一种有效的方法来识别多跨度刚性框架的静态响应参数.
  • 为了减少与分析复杂框架结构相关的计算负担.

主要方法:

  • 提出了一种硬度分离方法,将全球硬度矩阵细分为子结构矩阵.
  • 负荷单独应用于基结构,促进不同的局部静态反应.
  • 该方法在三和八跨连续刚性框架结构上得到了验证.

主要成果:

  • 刚性分离方法显著减少了计算工作量.
  • 这种方法提高了多跨度刚性框架的参数识别效率.
  • 由于对亚结构的个别负载应用,可以清楚地观察到局部静态反应.

结论:

  • 拟议的刚性分离方法在多跨度刚性框架中的参数识别上是有效的.
  • 这种技术提供了一个比传统方法更有效的计算替代方案.
  • 这些发现表明,结构参数识别的效率大幅提高.