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相关概念视频

Simpson's Rule II01:28

Simpson's Rule II

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In warehouse roofing applications, corrugated or curved metal sheets are commonly used to improve structural strength, water drainage, and ventilation efficiency. To accurately estimate material requirements and optimize design parameters, engineers must determine the curved surface area of these sheets. Because the sheet profiles often repeat smoothly along their length, they can be effectively approximated by parabolic curves, enabling the use of numerical integration techniques for area...
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Hydrostatic Pressure Force on a Curved Surface01:04

Hydrostatic Pressure Force on a Curved Surface

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Hydrostatic pressure on curved surfaces is a fundamental concept in fluid mechanics with broad applications in the civil engineering field. When fluid is in contact with a curved surface, as in a reservoir, dam, or storage tank, it exerts pressure that varies in magnitude and direction along the curved surface. To assess the total hydrostatic force exerted by the fluid on a curved structure, engineers typically isolate the fluid volume adjacent to the surface and analyze the forces acting on...
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Bending of Curved Members - Neutral Surface01:16

Bending of Curved Members - Neutral Surface

564
In curved beams, unlike straight beams, the stress distribution across the cross-section is not uniform due to the beam's curvature. This non-uniformity arises because the neutral axis, where stress is zero, does not align with the centroid of the section. In a curved beam, the strain varies along the section as a function of the distance from the neutral axis.
Consider the curved member described in the previous lesson. According to Hooke's law, which relates stress to strain within the...
564
Curvilinear Motion: Rectangular Components01:23

Curvilinear Motion: Rectangular Components

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Curvilinear motion characterizes the movement of a particle or object along a curved path, notably evident when envisioning a car navigating a winding road. If the car starts at point A, its position vector is established within a fixed frame of reference, where the ratio of the position vector to its magnitude signifies the unit vector pointing in the position vector's direction.
As the car advances, its position evolves over time. Quantifying the car's velocity involves computing the...
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Design Example: Traverse Angle Computations01:25

Design Example: Traverse Angle Computations

372
Traverse angle computations are a critical component of surveying, used to compute the internal angles within a closed traverse. A traverse consists of a series of connected lines forming a closed loop, often used for land boundary delineation or mapping. Calculating the internal angles ensures accuracy in the traverse geometry and is essential for checking survey data integrity.The process begins with known azimuths and bearings of the traverse sides. Internal angles at each vertex are...
372
Design Example: Calculating Safe Diameter for Wind-Exposed Disc01:17

Design Example: Calculating Safe Diameter for Wind-Exposed Disc

369
Assessing safety in wind-exposed installations is crucial to preventing potential failures. This example explores the calculation and design adjustments needed to mount a circular disc on a building facade, where wind forces are a primary concern. A 4-meter diameter disc was initially designed as an aesthetic feature facing winds at a velocity of 25 meters per second, with an air density of 1.25 kilograms per cubic meter. Given these conditions, the drag force on the disc was determined using...
369

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相关实验视频

Updated: Feb 28, 2026

Automatic Laser-based Geometry Capture for Finite Element Analysis of Weld Beads
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Automatic Laser-based Geometry Capture for Finite Element Analysis of Weld Beads

Published on: July 25, 2025

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一个通用的几何代码解析框架,用于在曲表面的定向能量沉积中优化角.

Lan Jiang1, Zhongkai Li1, Xiaofang Pan1

  • 1School of Materials Science and Engineering, Central South University, Changsha 410083, China.

Materials (Basel, Switzerland)
|February 27, 2026
PubMed
概括
此摘要是机器生成的。

本研究介绍了一种路径优化策略,以防止在曲面上激光覆盖的定向能量沉积中出现缺陷. 该方法提高了工业规模增材制造的尺寸精度和表面质量.

关键词:
添加剂制造 添加剂制造 添加剂制造复杂的曲面部分的复杂曲面部分.定向能量沉积是指向能量沉积的方法.路径优化路径优化

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Theoretical Calculation and Experimental Verification for Dislocation Reduction in Germanium Epitaxial Layers with Semicylindrical Voids on Silicon
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Theoretical Calculation and Experimental Verification for Dislocation Reduction in Germanium Epitaxial Layers with Semicylindrical Voids on Silicon

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Detection of Architectural Distortion in Prior Mammograms via Analysis of Oriented Patterns
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Detection of Architectural Distortion in Prior Mammograms via Analysis of Oriented Patterns

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相关实验视频

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Automatic Laser-based Geometry Capture for Finite Element Analysis of Weld Beads
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Automatic Laser-based Geometry Capture for Finite Element Analysis of Weld Beads

Published on: July 25, 2025

936
Theoretical Calculation and Experimental Verification for Dislocation Reduction in Germanium Epitaxial Layers with Semicylindrical Voids on Silicon
06:57

Theoretical Calculation and Experimental Verification for Dislocation Reduction in Germanium Epitaxial Layers with Semicylindrical Voids on Silicon

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Detection of Architectural Distortion in Prior Mammograms via Analysis of Oriented Patterns
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科学领域:

  • 添加剂制造 添加剂制造 添加剂制造
  • 材料科学 材料科学 材料科学
  • 机械工程 机械工程

背景情况:

  • 激光覆盖定向能量沉积 (LC-DED) 用于修复和制造复杂的金属部件.
  • 在曲基板上的多轴沉积通常会导致过度沉积和由于料率波动而导致角落上的几何缺陷.
  • 这些缺陷阻碍了表面形状的保真性,并限制了实际应用.

研究的目的:

  • 开发一种用于优化曲面LC-DED工具路径的新策略.
  • 为了减轻角段的过度沉积和几何扭曲.
  • 为了提高尺寸一致性和表面质量在增材制造的曲面部件.

主要方法:

  • 开发了一个基于几何代码解析的以角为导向的路径优化策略.
  • 该方法直接在工具路径上运行,而不改变CAD模型或切片工作流.
  • 这种方法特别针对和抑制在沉积期间的角落部分的问题.

主要成果:

  • 拟议的战略有效地抑制了角落过度构建和形态扭曲.
  • 在尺寸一致性和表面质量方面取得了显著的改进.
  • 该方法证明了曲面增材制造的增强几何准确性.

结论:

  • 开发的路径优化策略克服了曲面LC-DED的局限性.
  • 这种方法为高精度制造提供了可扩展和广泛适用的解决方案.
  • 它为可靠的,工业规模的复杂金属组件具有曲表面的增材制造铺平了道路.