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相关概念视频

Machines: Problem Solving II01:30

Machines: Problem Solving II

263
Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. Consider a lifting tong carrying a 100 kg load. It comprises movable sections DAF and CBG linked together with member AB.
263
Distributed Loads: Problem Solving01:21

Distributed Loads: Problem Solving

588
Beams are structural elements commonly employed in engineering applications requiring different load-carrying capacities. The first step in analyzing a beam under a distributed load is to simplify the problem by dividing the load into smaller regions, which allows one to consider each region separately and calculate the magnitude of the equivalent resultant load acting on each portion of the beam. The magnitude of the equivalent resultant load for each region can be determined by calculating...
588
Three-Dimensional Force System:Problem Solving01:30

Three-Dimensional Force System:Problem Solving

577
A three-dimensional force system refers to a scenario in which three forces act simultaneously in three different directions. This type of problem is commonly encountered in physics and engineering, where it is necessary to calculate the resultant force on the system, which can then be used to predict or analyze the behavior of the object or structure under consideration.
To solve a three-dimensional force system, first resolve each force into its respective scalar components. Do this using...
577
Load along a Single Axis01:29

Load along a Single Axis

257
In structural engineering, the analysis of beams subjected to varying loads is a critical aspect of understanding the behavior and performance of these structural elements. A common scenario involves a beam subjected to a combination of different load distributions.
Consider a beam of length L subjected to a varying load, which is a combination of parabolic and trapezoidal load distribution along the x-axis. In this case, it is essential to determine the resultant loads, their locations, and...
257
Constraints and Statical Determinacy01:26

Constraints and Statical Determinacy

543
In structural engineering, the equilibrium of a system is not only determined by its equations of equilibrium but also with the help of constraints. Constraints refer to restrictions on the motion of a system. The proper combinations of constraints can minimize the total number of constraints needed to maintain a system in mechanical equilibrium. When this happens, the system is said to be statically determinate. For such systems, the unknown reaction supports can be estimated using equilibrium...
543
Cable Subjected to Concentrated Loads01:28

Cable Subjected to Concentrated Loads

741
Flexible cables are commonly used in various applications for support and load transmission. Consider a cable fixed at two points and subjected to multiple vertically concentrated loads. Determine the shape of the cable and the tension in each portion of the cable, given the horizontal distances between the loads and supports.
741

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相关实验视频

Updated: May 7, 2025

Operation of the Collaborative Composite Manufacturing CCM System
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Published on: October 1, 2019

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一个贪的tabu双启发式算法用于循环采集和交付问题与3D加载约束.

Wei Xu1, Bingjie Li1, Wenjie Cui1

  • 1Shandong University of Science and Technology, College of Transportation, Qingdao, 266590, China.

Scientific reports
|December 31, 2024
PubMed
概括

这项研究通过将车辆路由与3D加载集成来优化汽车零部件物流. 新的Greedy-Tabu双重启发算法显著减少了旅行距离和等待时间,提高了效率.

关键词:
循环的接送和交付.混合动力多模型路径优化路径优化三维装载方式 三维装载方式

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科学领域:

  • 运营研究 运营研究
  • 供应链管理 供应链管理
  • 优化物流的优化物流.

背景情况:

  • 汽车行业的增长取决于高效的汽车零部件供应链物流.
  • 降低物流成本和提高运输效率是关键的挑战.
  • 现有的方法往往无法将多车辆路由与复杂的3D加载约束相结合.

研究的目的:

  • 在时间窗口限制下,共同优化多车辆接送运输路径.
  • 将货物的三维 (3D) 装载纳入物流优化模型.
  • 为进口汽车零部件物流开发一个全面的优化模型.

主要方法:

  • 为进口汽车零部件物流开发一个全面的优化模型.
  • 关于贪-塔布双重启发算法的建议,将改进的贪和增强的塔布搜索与e-sampling集成在一起.
  • 通过各种案例研究和与传统方法的比较来评估算法的性能.

主要成果:

  • 与传统的牛奶运行方法相比,提出的方法实现了总行驶距离减少26.67%,等待时间减少46.60%.
  • 与标准的3D加载方法相比,平均车辆负载利用率提高了17%,车辆体积利用率提高了15%.
  • 贪-塔布双重启发算法在不同的问题大小中展示了优越性,效率和稳定性.

结论:

  • 开发的优化模型和Greedy-Tabu双重启发算法对于复杂的汽车零部件物流是有效的.
  • 综合方法显著提高了汽车供应链中的运输效率和资源利用率.
  • 这些发现证实了拟议的方法在现实物流场景中的实用性和优越性.