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相关概念视频

Design Consideration01:22

Design Consideration

332
Designing a structure involves a series of considerations, primarily the material's ultimate strength, calculated through tests that measure changes under increased force until the material reaches its breaking point or limit. The ultimate load, where the material breaks, is divided by its original cross-sectional area, resulting in the ultimate normal stress or strength. The ultimate shearing stress is another significant factor taken into account.
The factor of safety is another key...
332
Stability of structures01:14

Stability of structures

257
In mechanical engineering, the stability of systems under various forces is critical for designing durable and efficient structures. One fundamental way to explore these concepts is by analyzing systems like two rods connected at a pivot point, O, with a torsional spring of spring constant k at the pivot point. This system is similar in appearance to a scissor jack used to change tires on a car. In this case, the arms of the linkage (equivalent to the rods in this system) are entirely vertical,...
257
Internal Loadings in Structural Members: Problem Solving01:28

Internal Loadings in Structural Members: Problem Solving

1.4K
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...
1.4K
Indeterminate Structure01:18

Indeterminate Structure

925
Indeterminate structures refer to structures where internal forces and reactions cannot be determined using only the equations of static equilibrium.  Indeterminate structures have more unknown forces and reaction forces than equations of static equilibrium that can be used to determine them. Indeterminate structures are often used in engineering to create complex, efficient, and aesthetically pleasing structures. There are various types of indeterminate structures used in engineering and...
925
Structural Classification of Joints01:20

Structural Classification of Joints

4.3K
Joints, also known as articulations, are classified based on their structural characteristics, i.e., based on whether the articulating surfaces of the adjacent bones are directly connected by fibrous connective tissue or cartilage, or whether the articulating surfaces contact each other within a fluid-filled joint cavity. These differences serve to divide the joints of the body into three structural classifications.
A fibrous joint is where the adjacent bones are united by fibrous connective...
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相关实验视频

Updated: Sep 17, 2025

A Reliable and Reproducible Critical-Sized Segmental Femoral Defect Model in Rats Stabilized with a Custom External Fixator
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A Reliable and Reproducible Critical-Sized Segmental Femoral Defect Model in Rats Stabilized with a Custom External Fixator

Published on: March 24, 2019

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关于多脚结构完整性安全案例的发展和观察.

Steve Garwood1, Adrian Allen2, David Duxbury2

  • 1Department of Mechanical Engineering, Imperial College London, London, UK.

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences
|July 3, 2025
PubMed
概括

英国在2001年建立的核部件结构完整性评估的多层次方法已经发展. 一个通用的三脚模型现在被认为更适合新的核电站安全案例.

关键词:
一个案例的案例.失败的失败失败的失败失败的失败难以置信的不可思议性诚信的完整性 诚信的完整性在安全方面,安全是安全的.这是一个结构性的结构.

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Method and Instrumented Fixture for Femoral Fracture Testing in a Sideways Fall-on-the-Hip Position
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Method and Instrumented Fixture for Femoral Fracture Testing in a Sideways Fall-on-the-Hip Position

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Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion
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Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion

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相关实验视频

Last Updated: Sep 17, 2025

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Method and Instrumented Fixture for Femoral Fracture Testing in a Sideways Fall-on-the-Hip Position
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Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion

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科学领域:

  • 核工程 核工程是指核工程.
  • 结构完整性评估 结构完整性评估
  • 安全案例开发安全案例开发

背景情况:

  • 英国的安全完整性技术评估指南 (TAGSI) 在2001年发布了核部件结构完整性的原则,引入了多步骤的方法.
  • 这种方法是为了支持英国"概念防御深度"安全案例的"失败不可思议性"组件,建立在1990年代的研究.
  • 自2001年以来,英国核电厂的设计,建造和运营都采用了多层次评估,并提出了新的设计.

研究的目的:

  • 审查核部件结构完整性评估的多层次方法自2001年开始以来的发展和应用.
  • 评估核设计和施工规范的进步对评估方法的影响.
  • 为当前和未来的核电站安全案例提出一个更新的模型.

主要方法:

  • 通过TAGSI对多脚方法的历史发展进行了审查.
  • 随着时间的推移,核设计和建设规范的改进分析.
  • 审查最近的通用设计评估及其安全案例结构.

主要成果:

  • 核能设计和施工规范有了进步,加强了设计和制造的论点.
  • 现代元件中缺陷的可能性降低,减少了对防腐测试的依赖.
  • 最近的通用设计评估显示,安全案例中的腿部范围和数量有所调整.

结论:

  • 对于新的核电站安全案例,一般化的三脚模型被认为更适合.
  • 这种更新的模型仍然与最初的TAGSI原则和多腿提案保持一致.
  • 这一演变反映了组件制造和安全评估方法的进步.