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

Relation between Mathematical Equations and Block Diagrams01:20

Relation between Mathematical Equations and Block Diagrams

178
In a spring-mass-damper system, the second-order differential equation describes the dynamic behavior of the system. When transformed into the Laplace domain under zero initial conditions, this equation can be effectively analyzed and manipulated. The transformation into the Laplace domain converts differential equations into algebraic equations, simplifying the process of isolating the output.
178
Damped Oscillations01:07

Damped Oscillations

5.7K
In the real world, oscillations seldom follow true simple harmonic motion. A system that continues its motion indefinitely without losing its amplitude is termed undamped. However, friction of some sort usually dampens the motion, so it fades away or needs more force to continue. For example, a guitar string stops oscillating a few seconds after being plucked. Similarly, one must continually push a swing to keep a child swinging on a playground.
Although friction and other non-conservative...
5.7K
Types of Damping01:20

Types of Damping

6.4K
If the amount of damping in a system is gradually increased, the period and frequency start to become affected because damping opposes, and hence slows, the back and forth motion (the net force is smaller in both directions). If there is a very large amount of damping, the system does not even oscillate; instead, it slowly moves toward equilibrium. In brief, an overdamped system moves slowly towards equilibrium, whereas an underdamped system moves quickly to equilibrium but will oscillate about...
6.4K
Magnetic Damping01:17

Magnetic Damping

437
Eddy currents can produce significant drag on motion, called magnetic damping. For instance, when a metallic pendulum bob swings between the poles of a strong magnet, significant drag acts on the bob as it enters and leaves the field, quickly damping the motion.
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...
437
Rigid Body Equilibrium Problems - II01:21

Rigid Body Equilibrium Problems - II

7.0K
A rigid body is in static equilibrium when the net force and the net torque acting on the system are equal to zero.
Consider two children sitting on a seesaw, which has negligible mass. The first child has a mass (m1) of 26 kg and sits at point A, which is 1.6 meters (r1) from the pivot point B; the second child has a mass (m2) of 32 kg and sits at point C. How far from the pivot point B should the second child sit (r2) to balance the seesaw?
7.0K
Newtonian Fluid: Problem Solving01:18

Newtonian Fluid: Problem Solving

207
Newtonian fluids exhibit a constant viscosity, meaning their shear stress and shear strain rate are directly proportional. This property ensures a predictable and stable response to applied forces, maintaining a linear relationship between force and flow. Examples include water, air, and light oils, consistently demonstrating this proportional behavior regardless of external conditions.
A velocity gradient forms within the fluid when a Newtonian fluid is placed between two parallel plates, with...
207

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

Multiscale simulation of salt crystallization-induced damage in porous materials.

Materials and structures·2026
Same author

[Lung transplantation for cystic fibrosis and bronchiectasis].

Revue des maladies respiratoires·2023
Same author

[Updated indications and contraindications in 2022 for lung transplantation in France].

Revue des maladies respiratoires·2022
Same author

Revue des maladies respiratoires actualites·2020
Same author

Atypical Gram-negative rods on the Gram stain of a bronchoalveolar fluid.

Clinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases·2019
Same author

Antibody-Mediated Rejection in Lung Transplantation: Clinical Outcomes and Donor-Specific Antibody Characteristics.

American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons·2016
Same journal

Numerical convergence of the scalar auxiliary variable method applied to nonlinear stiff string models.

Nonlinear dynamics·2026
Same journal

Hysteresis in cavitation emissions during a ramped-then-deramped amplitude sonication: A theoretical and experimental investigation.

Nonlinear dynamics·2026
Same journal

Fluid-structure dynamics of a vibro-impact capsule robot in multiphase intestinal environments.

Nonlinear dynamics·2026
Same journal

Computation of simple invariant solutions in fluid turbulence with the aid of deep learning.

Nonlinear dynamics·2025
Same journal

Swimming dynamics of screw-shaped untethered magnetic robots in confined spaces.

Nonlinear dynamics·2025
Same journal

Bifurcation-based dynamics and internal resonance in micro ring resonators for MEMS applications.

Nonlinear dynamics·2025
查看所有相关文章

相关实验视频

Updated: Jun 14, 2025

Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling
06:55

Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling

Published on: August 5, 2016

8.2K

摇摆模拟基于数值消散的摇摆模拟.

A M D'Altri1,2, G Vlachakis2, S de Miranda1

  • 1Department of Civil, Chemical, Environmental, and Materials Engineering, University of Bologna, Bologna, Italy.

Nonlinear dynamics
|August 29, 2024
PubMed
概括
此摘要是机器生成的。

一种新的计算方法准确地模拟了使用数值消散而没有减压模型的摇滚块. 这种方法使得对遗产结构至关重要的结构元素能够在很长的时间内进行快速分析.

关键词:
文化遗产结构 文化遗产结构动力学 动力学 动力学有限元素方法 有限元素方法.建筑工艺 建筑工艺 建筑工艺 建筑工艺在飞机外的崩.摇摇欲的摇滚 摇摇欲的摇摇欲

更多相关视频

Visualizing Hyporheic Flow Through Bedforms Using Dye Experiments and Simulation
09:49

Visualizing Hyporheic Flow Through Bedforms Using Dye Experiments and Simulation

Published on: November 18, 2015

12.2K
An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
11:03

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids

Published on: December 4, 2017

8.5K

相关实验视频

Last Updated: Jun 14, 2025

Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling
06:55

Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling

Published on: August 5, 2016

8.2K
Visualizing Hyporheic Flow Through Bedforms Using Dye Experiments and Simulation
09:49

Visualizing Hyporheic Flow Through Bedforms Using Dye Experiments and Simulation

Published on: November 18, 2015

12.2K
An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
11:03

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids

Published on: December 4, 2017

8.5K

科学领域:

  • 计算力学是计算力学.
  • 结构动力学 结构动力学
  • 地质技术工程地质技术工程

背景情况:

  • 模拟摇块的动态行为对于评估结构,特别是历史结构的稳定性至关重要.
  • 传统的方法通常依赖于减压模型,这些模型可能无法完全捕捉撞击期间复杂的散射现象.
  • 需要准确和高效的计算工具来分析各种负载条件下的摇块响应.

研究的目的:

  • 提出一种新的计算方法来模拟基于数值散射的摇滚块.
  • 开发一种准确和有效的方法来预测冲击时的摇摆消散现象.
  • 在数值模拟中建立一个回归定律,用于在数值模拟中选择最佳时间步骤.

主要方法:

  • 理想化摇块作为一个固体体,以接触为基础的配方.
  • 采用隐式时间集成方案,以优化数值消散.
  • 进行数值运动,以获得时间步骤设置的分析回归定律.

主要成果:

  • 拟议的数值散射精确地预测了摇摆散射,而没有明确的减压模型.
  • 对于时间步骤选择,建立了一个经过验证的回归定律,这取决于块几何,刚度和还原系数.
  • 与结构工程相关的摇块的模拟可以通过大时间步骤 (10−3到10−1秒) 实现,确保计算效率.

结论:

  • 数字消散方法为模拟摇摆块提供了一种有效和高效的方法.
  • 衍生的回归定律提高了模拟中的时间步骤选择的准确性和可靠性.
  • 这种方法对文化遗产结构和其他关键工程应用的分析具有重大前景.