相关实验视频
Updated: Jun 11, 2025

10:09
Operation of the Collaborative Composite Manufacturing CCM System
Published on: October 1, 2019
6.6K
"吉村的黄金比例"用于超稳定和大规模可重新配置的部署
Vishrut Deshpande1, Yogesh Phalak1, Ziyang Zhou1
1Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA, USA.
概括
这项研究介绍了一种新的吉村原木图案,打破了传统的设计约束. 通过结合黄金比率,这种新模式创建了具有多个承载配置的元稳定,可部署结构.
科学领域:
- 机械工程 机械工程
- 材料科学 材料科学 材料科学
- 应用数学 应用数学 应用数学
背景情况:
- 吉村原画是一个成熟的折叠模式,用于可部署的结构.
- 现有的吉村设计遵循了确保平面折叠性的约束.
- 应用范围从航空航天到机器人和消费品.
研究的目的:
- 呈现一种超越传统设计局限性的新吉村原木图案.
- 探索使用黄金比例在吉村灵感结构中的潜力.
- 研究可部署和多功能结构系统的新可能性.
主要方法:
- 对折叠模式进行了广泛的动力学分析.
- 改进的吉村设计的原型测试.
- 使用黄金比率角度的数学公式.
主要成果:
- 开发了一个"吉村黄金比例"模式,挑战了传统的约束.
- 这种新模式表现出独特的元稳定性.
- 一个拥有黄金比例方面的吉村杆可以重新配置成多个独特的承载形状.
结论:
- 黄金比率可以用来创建具有增强多功能的新吉村原木.
- 这项研究挑战了可部署结构的现有设计规范.
- 为各种领域的先进结构系统开辟了新的途径.
相关概念视频
Multimachine Stability
143
Multimachine stability analysis is crucial for understanding the dynamics and stability of power systems with multiple synchronous machines. The objective is to solve the swing equations for a network of M machines connected to an N-bus power system.
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
143
Transformers with Off-Nominal Turns Ratios
141
In scenarios involving parallel transformers with disparate ratings, developing per-unit models requires accommodating off-nominal turns ratios. This situation arises when the selected base voltages are not proportional to the transformer’s voltage ratings. Consider a transformer where the rated voltages are related by the term a. If the chosen voltage bases satisfy a relationship involving term b, term c is defined as the ratio of these bases. This ratio is then substituted into the...
141
Distribution Reliability and Automation
107
Distribution reliability in electrical power systems is critical for ensuring an uninterrupted power supply to consumers at minimal cost. According to IEEE Standard Terms, reliability is the probability that a device will function without failure over a specified time period or amount of usage. For electric power distribution, this translates to maintaining continuous power supply and addressing customer concerns over power outages. Several indices, as defined by IEEE Standard 1366-2012, are...
107
Fast Decoupled and DC Powerflow
178
The fast decoupled power flow method addresses contingencies in power system operations, such as generator outages or transmission line failures. This method provides quick power flow solutions, essential for real-time system adjustments. Fast decoupled power flow algorithms simplify the Jacobian matrix by neglecting certain elements, leading to two sets of decoupled equations:
178
Transformers in Distribution System
99
Transformers in distribution systems can be broadly categorized into distribution substation transformers and other distribution transformers. They are crucial for stepping down high transmission voltages to levels suitable for distribution and end-user applications.
Distribution substation transformers come in various ratings and typically use mineral oil for insulation and cooling. To prevent moisture and air from entering the oil, some transformers use an inert gas like nitrogen to fill the...
Distribution substation transformers come in various ratings and typically use mineral oil for insulation and cooling. To prevent moisture and air from entering the oil, some transformers use an inert gas like nitrogen to fill the...
99
Stability of Equilibrium Configuration
434
Understanding the stability of equilibrium configurations is a fundamental part of mechanical engineering. In any system, there are three distinct types of equilibrium: stable, neutral, and unstable.
A stable equilibrium occurs when a system tends to return to its original position when given a small displacement, and the potential energy is at its minimum. An example of a stable equilibrium is when a cantilever beam is fixed at one end and a weight is attached to the other end. If the weight...
A stable equilibrium occurs when a system tends to return to its original position when given a small displacement, and the potential energy is at its minimum. An example of a stable equilibrium is when a cantilever beam is fixed at one end and a weight is attached to the other end. If the weight...
434

