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相关概念视频

Temperature Dependent Deformation01:12

Temperature Dependent Deformation

138
In a nonhomogeneous rod made up of steel and brass, restrained at both ends and subjected to a temperature change, several steps are involved in calculating the stress and compressive load. Due to the problem's static indeterminacy, one end support is disconnected, allowing the rod to experience the temperature change freely. Next, an unknown force is applied at the free end, triggering deformations in the rod's steel and brass portions. These deformations are then calculated and added...
138
Statically Indeterminate Problem Solving01:16

Statically Indeterminate Problem Solving

361
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...
361
Problem Solving in Statics01:28

Problem Solving in Statics

555
Problem-solving in statics is a crucial aspect of engineering and physics that involves resolving issues associated with bodies in a state of equilibrium. In most cases, problem-solving requires several steps to achieve an accurate result. These steps are crucial to ensuring that the solution is accurate and practical.
The physical situation and mathematical modeling must be considered; however, it is challenging to represent all physical situations using mathematical modeling. With the help of...
555
Method of Sections01:30

Method of Sections

587
Consider a truss structure, as shown in the figure.
587
Distance Corrections01:15

Distance Corrections

25
To achieve precise distance measurements, especially in surveying and construction, certain corrections must be applied to account for potential sources of error like the standardization errors, temperature variations, and slope adjustments.Standardization error emerges when measurement equipment undergoes changes, such as wear, repairs, or weather impacts. To address this, surveyors compare the equipment’s readings to a standard. This process identifies any deviation that might lead to...
25
Method of Sections: Problem Solving II01:30

Method of Sections: Problem Solving II

931
Consider an arbitrary truss structure composed of diagonal, vertical, and horizontal members fixed to the wall. To calculate the force acting on members CB, GB, and GH, method of sections can be used. The loads and lengths of the horizontal and vertical members are known parameters, as shown in the figure.
931

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相关实验视频

Updated: Jun 3, 2025

Experimental Methods for Investigation of Shape Memory Based Elastocaloric Cooling Processes and Model Validation
11:11

Experimental Methods for Investigation of Shape Memory Based Elastocaloric Cooling Processes and Model Validation

Published on: May 2, 2016

11.0K

基于分阶段温度测量的静态不确定的钢结构施工的力反方法.

Wei Lu1, Xianwei Fang1, Liming Liu1

  • 1School of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518000, China.

Sensors (Basel, Switzerland)
|January 8, 2025
PubMed
概括

这项研究引入了钢结构的新力反方法,考虑了施工期间不均的温度变化. 这种方法提高了结构力计算的准确性,减少了高达40%的误差.

关键词:
施工人员的反反应是施工人员的反反应.建设监测 建设监测建筑安全建设安全.静态不确定的结构结构.热效应是一种热效应.

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Optimized Sealing Process and Real-Time Monitoring of Glass-to-Metal Seal Structures
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Optimized Sealing Process and Real-Time Monitoring of Glass-to-Metal Seal Structures

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Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping
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Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping

Published on: November 7, 2016

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相关实验视频

Last Updated: Jun 3, 2025

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11:11

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Published on: May 2, 2016

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科学领域:

  • 结构工程 结构工程
  • 建筑工程工程 建筑工程
  • 材料科学 材料科学 材料科学

背景情况:

  • 标准结构设计往往假定均的温度作用,这并不反映现实世界的建筑条件.
  • 在静态不确定的钢结构的建造过程中不均的温度场导致温度效应和应力演变的模拟不准确.
  • 现有的方法无法真正捕捉结构成型后的温度作用和临时应力系统的性能.

研究的目的:

  • 提出一种新的力反方法,用于构建静态不确定性的钢结构.
  • 将分阶段的温度测量和施工序列纳入结构分析.
  • 为了提高在不均的温度条件下计算结构力的准确性.

主要方法:

  • 引入了一种基于分阶段温度测量的力反方法.
  • 该方法整合了施工序列和测量温度数据.
  • 它使用矩阵位移方法中的第一个处理方法和变形协调公式来确定结构变形和应力.

主要成果:

  • 拟议的方法产生了与现场测量数据密切一致的结构力计算.
  • 与传统方法相比,观察到计算错误的显著减少,在10%至40%之间.
  • 这些发现证实了在结构分析中考虑分阶段温度测量的有效性.

结论:

  • 开发的力反方法为在不均的温度下在静态不确定的钢结构中计算建筑力提供了更准确的方法.
  • 这项研究为改善建筑安全评估和时间表管理提供了宝贵的参考资料.
  • 该研究强调了考虑到结构工程中不均的温度效应的重要性.