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

X-ray Crystallography02:18

X-ray Crystallography

26.3K
The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
26.3K
Capillary Beds01:20

Capillary Beds

7.3K
Capillary beds are networks of tiny blood vessels that play a crucial role in the circulatory system. These beds are where the exchange of gases, nutrients, and waste products occurs between the blood and surrounding tissues. Each capillary bed consists of numerous capillaries, which are the smallest blood vessels in the body, typically only one cell-thick. This thinness allows for the efficient diffusion of substances.
Capillaries connect arterioles, small branches of arteries, to venules,...
7.3K
Mechanistic Models: Compartment Models in Algorithms for Numerical Problem Solving01:29

Mechanistic Models: Compartment Models in Algorithms for Numerical Problem Solving

324
Mechanistic models play a crucial role in algorithms for numerical problem-solving, particularly in nonlinear mixed effects modeling (NMEM). These models aim to minimize specific objective functions by evaluating various parameter estimates, leading to the development of systematic algorithms. In some cases, linearization techniques approximate the model using linear equations.
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...
324
Virtual Work01:20

Virtual Work

1.4K
The principle of virtual work states that if a body is in static and dynamic equilibrium, then the sum of all the virtual work done by all external forces and couple moments for any given virtual displacement must be zero.
In static equilibrium, a body can experience an imaginary or virtual movement, such as displacement or rotation. The virtual work done by a force is equal to the dot product of force and virtual displacement in the direction of the force. When it comes to virtually rotating a...
1.4K
Trial and Error and Algorithm01:12

Trial and Error and Algorithm

430
A problem-solving strategy is a plan of action used to find a solution. Different strategies have distinct action plans. Trial and error involves trying different solutions until one works. For instance, to fix a broken printer, you might check ink levels, ensure the paper tray isn't jammed, and verify the printer's connection to your laptop. This method can be time-consuming but is commonly used. Thomas Edison, for example, used trial and error to find a suitable filament for the light...
430
X-ray Imaging01:24

X-ray Imaging

10.6K
German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with...
10.6K

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

Renal CT algorithm for evaluating clear cell carcinoma in solid renal masses ≤ 4 cm: a retrospective chinese two-center validation study.

Abdominal radiology (New York)·2026
Same author

The diagnostic value of multiple schemes of MRI standard features combined with risk factors and ultrasound for Placenta accreta spectrum.

BMC pregnancy and childbirth·2026
Same author

Effects of Glycosylation and Glycation on the Structure and Thermal Stability of Caprine Lactoferrin.

Journal of agricultural and food chemistry·2025
Same author

Ultra-Robust Conductive Hydrogels Enabled by a Gradient Bond-Breaking Pseudo-Drying Strategy.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2025
Same author

Strong, antioxidant, and biodegradable gelatin methacryloyl composite hydrogel for oxidative stress protection in Schwann cells.

Frontiers in bioengineering and biotechnology·2025
Same author

[Electrical stimulation based on triboelectric nanogenerator promotes osteogenesis of MC3T3-E1 cells on titanium surfaces].

Sheng wu yi xue gong cheng xue za zhi = Journal of biomedical engineering = Shengwu yixue gongchengxue zazhi·2025
Same journal

Correction: Yang et al. Microstructural Characteristics of High-Pressure Die Casting with High Strength-Ductility Synergy Properties: A Review. <i>Materials</i> 2023, <i>16</i>, 1954.

Materials (Basel, Switzerland)·2026
Same journal

Effect of La and Ce Microalloying on the Corrosion Resistance of 0.4Sb Low-Alloy Steel in a Harsh Marine Atmospheric Environment.

Materials (Basel, Switzerland)·2026
Same journal

High-Temperature Properties of Magnesium Ammonium Phosphate Cement Modified with Gold Tailings.

Materials (Basel, Switzerland)·2026
Same journal

A Study on the Evolution of Intermetallic Phase Microstructure and High-Temperature Creep Behavior in Mg-8.0Al-1.0Nd-1.5Gd-Mn Alloys.

Materials (Basel, Switzerland)·2026
Same journal

Material-Driven Clinical Complications in Mechanical Circulatory Support: From Blood-Material Interactions to Device-Related Adverse Events.

Materials (Basel, Switzerland)·2026
Same journal

Influence of Final Irrigation on Calcium Silicate-Based Sealer Dentinal Tubular Penetration: A Systematic Review.

Materials (Basel, Switzerland)·2026
查看所有相关文章

相关实验视频

Updated: Feb 14, 2026

Image-based Lagrangian Particle Tracking in Bed-load Experiments
10:32

Image-based Lagrangian Particle Tracking in Bed-load Experiments

Published on: July 20, 2017

9.5K

基于虚拟射线造算法的聚氨固化压床的中镜异质建模方法.

Yang Xu1,2, Zhaochuan Sheng3, Jingyu Zhang1,2

  • 1Railway Engineering Research Institute, China Academy of Railway Sciences Corporation Limited, Beijing 100081, China.

Materials (Basel, Switzerland)
|February 13, 2026
PubMed
概括
此摘要是机器生成的。

本研究提出了一种用于聚氨固化压床 (PSBB) 的新型中等尺度建模方法,避免了X射线计算机断层扫描 (XCT). 这种方法优化了卧槽宽度,以改善压载床系统中的机械反应.

关键词:
离散元素方法 离散元素方法有限元素方法的方法.复合异质材料的复合材料.中视镜建模 中视镜建模聚氨固化压床的压床.卧床宽度优化 卧床宽度优化虚拟射线造 虚拟射线造

更多相关视频

A Volumetric Method for Quantification of Cerebral Vasospasm in a Murine Model of Subarachnoid Hemorrhage
08:12

A Volumetric Method for Quantification of Cerebral Vasospasm in a Murine Model of Subarachnoid Hemorrhage

Published on: July 28, 2018

8.5K
Failure Analysis of Batteries Using Synchrotron-based Hard X-ray Microtomography
08:11

Failure Analysis of Batteries Using Synchrotron-based Hard X-ray Microtomography

Published on: August 26, 2015

9.3K

相关实验视频

Last Updated: Feb 14, 2026

Image-based Lagrangian Particle Tracking in Bed-load Experiments
10:32

Image-based Lagrangian Particle Tracking in Bed-load Experiments

Published on: July 20, 2017

9.5K
A Volumetric Method for Quantification of Cerebral Vasospasm in a Murine Model of Subarachnoid Hemorrhage
08:12

A Volumetric Method for Quantification of Cerebral Vasospasm in a Murine Model of Subarachnoid Hemorrhage

Published on: July 28, 2018

8.5K
Failure Analysis of Batteries Using Synchrotron-based Hard X-ray Microtomography
08:11

Failure Analysis of Batteries Using Synchrotron-based Hard X-ray Microtomography

Published on: August 26, 2015

9.3K

科学领域:

  • 土木工程 土木工程是指土木工程.
  • 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:

  • 复合材料的中尺度建模,如聚氨固化压床 (PSBBs),传统上依赖于X射线计算机断层扫描 (XCT).
  • 现有的方法在样本大小,成本和复杂的后处理方面存在局限性.

研究的目的:

  • 为PSBB开发一种新型的中尺度建模方法,绕过XCT的需求.
  • 建立一个计算效率高,准确的方法来分析粒子结合剂复合材料的机械行为.

主要方法:

  • 将离散元件方法 (DEM) 与有限元件方法 (FEM) 结合起来.
  • 从3D激光扫描中重建高保真离散元素几何.
  • 使用虚拟射线造算法进行异质材料中等尺度重建.
  • 用实验室的单轴压缩试验验证模型准确性和网格趋同.

主要成果:

  • 确定了0.4倍于最小颗粒大小 (0.4 Dmin) 的最佳网格大小,以实现模型准确性.
  • 确定至少0.73倍于压载床宽度 (0.73 Wb) 的卧铺宽度可以实现最佳的应力扩散和位移控制.
  • 证明了该方法在分析压载床机械反应方面的有效性.

结论:

  • 开发的DEM-FEM合方法为XCT提供了一个高效的替代方案,用于PSBBs的中尺度建模.
  • 这些发现提供了关于优化卧床尺寸以提高压载床性能的指导.
  • 该方法广泛适用于其他多相颗粒粘合剂复合系统.