Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Design of Prismatic Beams for Bending01:23

Design of Prismatic Beams for Bending

379
The design of prismatic beams, structural elements with a uniform cross-section, focuses on ensuring safety and structural integrity under load. The design process begins by determining the allowable stress, either from material properties tables, or by dividing the material's ultimate strength by a safety factor. This safety factor is essential for accommodating uncertainties, and varies depending on the material—timber, steel, or concrete—with each having unique strength and...
379
Bending of Material: Problem Solving01:09

Bending of Material: Problem Solving

252
In this lesson, determine the ratio of the maximum bending moments applied to two metal pipes, given that both pipes can withstand a maximum stress of 100 MPa. Both pipes have an outer radius of 1.8 cm. Pipe A has an inner radius of 1.5 cm, and Pipe B has an inner radius of 1 cm. The ratio of the maximum bending moment applied to two metallic pipes, each with a different inner and outer radius, is determined by considering their dimensions. The inner radius of the first pipe is 1.5 cm, and for...
252
Structural Steel Products01:24

Structural Steel Products

361
Structural steel products are created within a structural mill. The process begins with a beam blank that is reheated and then fed through a series of rollers. These rollers progressively shape the metal into its final form. Adjusting the spacings between the rollers allows for the production of different sections with the same nominal dimensions.
Once shaped, the steel's final form emerges as a continuous length, which is then segmented by a hot saw into manageable pieces. These segments...
361
Torsion of Noncircular Members01:16

Torsion of Noncircular Members

226
Circular shafts undergoing torsional stress maintain their cross-sectional integrity due to their axisymmetric nature. This symmetry ensures an even distribution of stress, allowing the shaft to withstand torsion without distorting. In contrast, square bars, lacking this axial symmetry, experience significant distortion across their cross-sections when subjected to torsion, with the exception of along their diagonals and at lines connecting midpoints. A detailed examination of a cubic element...
226
Stresses under Combined Loadings01:23

Stresses under Combined Loadings

234
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...
234
Bending of Members Made of Several Materials01:08

Bending of Members Made of Several Materials

269
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...
269

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Mechanical and Corrosion Behaviour in Simulated Body Fluid of As-Fabricated 3D Porous L-PBF 316L Stainless Steel Structures for Biomedical Implants.

Journal of functional biomaterials·2024
Same author

Assessing Formability and Failure of UHMWPE Sheets through SPIF: A Case Study in Medical Applications.

Polymers·2023
Same author

Formability Limits, Fractography and Fracture Toughness in Sheet Metal Forming.

Materials (Basel, Switzerland)·2019
查看所有相关文章

相关实验视频

Updated: Sep 18, 2025

Finite Element Modeling for the Simulation of the Quasi-Static Compression of Corrugated Tapered Tubes
06:34

Finite Element Modeling for the Simulation of the Quasi-Static Compression of Corrugated Tapered Tubes

Published on: January 6, 2023

1.7K

方形管和L截面的成形性限制.

Inês M Almeida1, João P G Magrinho1, Maria Beatriz Silva1

  • 1IDMEC, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.

Materials (Basel, Switzerland)
|June 27, 2025
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种新的方法来测量方形和L截面管的可塑性极限. 这些发现提高了轻量级元件的制造效率和结构可靠性.

关键词:
在L-profiles中,可以使用L-profile.形状的限制 形状的限制骨折是指骨折,骨折是指骨折,骨折是指骨折,骨折是指骨折.在子上着子.薄壁的管道是薄壁的管道.

更多相关视频

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

Knowledge Based Cloud FE Simulation of Sheet Metal Forming Processes

Published on: December 13, 2016

12.3K
A Novel Biaxial Testing Apparatus for the Determination of Forming Limit under Hot Stamping Conditions
07:40

A Novel Biaxial Testing Apparatus for the Determination of Forming Limit under Hot Stamping Conditions

Published on: April 4, 2017

7.7K

相关实验视频

Last Updated: Sep 18, 2025

Finite Element Modeling for the Simulation of the Quasi-Static Compression of Corrugated Tapered Tubes
06:34

Finite Element Modeling for the Simulation of the Quasi-Static Compression of Corrugated Tapered Tubes

Published on: January 6, 2023

1.7K
Knowledge Based Cloud FE Simulation of Sheet Metal Forming Processes
11:05

Knowledge Based Cloud FE Simulation of Sheet Metal Forming Processes

Published on: December 13, 2016

12.3K
A Novel Biaxial Testing Apparatus for the Determination of Forming Limit under Hot Stamping Conditions
07:40

A Novel Biaxial Testing Apparatus for the Determination of Forming Limit under Hot Stamping Conditions

Published on: April 4, 2017

7.7K

科学领域:

  • 材料科学与工程 材料科学与工程
  • 机械工程 机械工程
  • 制造过程 制造过程 制造过程

背景情况:

  • 具有非圆形截面 (方形,L截面) 的薄壁管在汽车和航空航天领域至关重要.
  • 它们的可形成性极限和断裂行为与圆形管有很大不同,需要进行专门的分析.
  • 现有的研究往往忽略了这些特定的几何形状,在制造业优化方面造成了知识差距.

研究的目的:

  • 开发和验证一种新的方法来准确确定方形和L截面管的可塑性极限.
  • 在各种成型条件下研究这些配置文件中独特的变形和断裂机制.
  • 为优化制造工艺和提高由这些管制成的组件的结构完整性提供关键数据.

主要方法:

  • 实现数字图像相关性 (DIC) 结合依赖时间的方法来准确测量应变.
  • 包括精确的厚度测量,以准确捕获局部变形.
  • 在受控的成形条件下进行实验测试,以捕捉导致故障的多种变种路径.

主要成果:

  • 成功识别形成的极限点 (首开始) 和形成裂纹的线条 (裂纹开始).
  • 受特定管体几何形状 (正方形,L截面) 影响的断裂机制的表征.
  • 断裂模式的区分:张力 (模式I) 和平面内剪切 (模式II).

结论:

  • 开发的方法准确量化了非圆形管的可塑性极限.
  • 几何因素显著影响正方形和L截面形状的断裂机制.
  • 该研究提供了优化管子成型工艺的基本数据,提高了组件设计和性能.