Name: load distribution on shelves and dams
Uploaded: 2023-09-22T11:49:22.000Z
Duration: 1 min 19 s
Channel: JoVE

분산 하중은 표면 또는 구조물에 걸쳐 분산되는 하중 유형입니다.
책으로 구성된 책장을 생각해 보십시오. 책의 무게는 지역 전체에 고르게 분포되어 있습니다.
표면의 다른 위치에서의 압력은 해당 영역에 가해진 하중에 해당하며 평방 미터당 뉴턴 또는 파스칼로 측정됩니다.
수중 표면이 직사각형 판으로 모델링되는 수력 발전 댐을 생각해 보십시오.
길이가 dx인 작은 요소의 경우, 요소에 가해지는 힘은 wdx에 의해 주어지는 분산 하중으로 표현될 수 있습니다.
요소에 가해지는 힘을 적분하여 하중 곡선 아래의 총 면적과 크기가 동일한 총 하중이 결정되고 그 작용선은 영역의 중심을 통과합니다.
결과적인 힘이 가해지는 지점을 압력 중심이라고 합니다.

<ol>
	<li>히벨러, R.C. (2016). Engineering Mechanics \u2012 정역학 및 동역학. 뉴저지 호보켄: 피어슨 프렌티스 홀. 190쪽</li>
	<li>맥주, F.P.; 존스턴, ER; 마주렉, D.F; 크롬웰, PJ 및 Self, BP(2019). 엔지니어를 위한 벡터 역학 \u2012 Statics and Dynamics. 뉴욕 : McGraw-Hill. 262쪽.</li>
</ol>

분산 하중

Distributed Loads

분산하중은 공학자와 과학자가 다양한 실제 상황에서 접하는 일반적인 하중 유형입니다. 분산하중은 종종 표면이나 구조물에 퍼지는 하중 유형을 말하며 단위 면적당 연속적인 힘으로 모델링할 수 있습니다.
예를 들어, 책들이 서로 수직으로 인접하여 쌓여 있는 책장을 생각해 보겠슴니다. 책들의 무게는 선반의 길이에 걸쳐 고르게 분포되어 있습니다. 따라서 선반 표면의 서로 다른 위치에서의 압력은 가해진 하중에 해당하며 제곱미터당 뉴튼 단위로 측정됩니다.
다른 응용의 관점에서, 잠긴 표면이 직사각형 판으로 모델링된 수력발전 댐을 생각해 보겠습니다. 길이가 dx인 판의 작은 요소에 작용하는 힘은 wdx에 의해 주어진 분산하중으로 표현될 수 있고, 여기서 "w"은 단위면적당 힘입니다. 판에 작용하는 총하중은 각 작은 요소에 작용하는 힘을 적분하여 결정할 수 있습니다. 판에 작용하는 합력의 크기는 하중 곡선 아래의 면적에 비례하며, 판의 작용선은 해당 면적의 중심을 지나갑니다. 이 점을 압력의 중심이라 합니다. 압력의 중심은 외부 힘에 견딜 수 있는 구조물을 설계하는 데 필수적입니다. 
분산하중의 예로는 건물 옥상의 적설하중, 구조물에 작용하는 풍하중, 심지어 다리 위의 자동차의 무게 등이 있습니다. 분산하중을 이해하는 것은 외력에 견딜 수 있는 안전하고 튼튼한 구조물을 설계하는 데 매우 중요합니다.

분산 하중은 엔지니어와 과학자가 다양한 실제 상황에서 직면하는 일반적인 유형의 하중입니다. 분산 하중은 종종 ...

Education

교육

JoVE Core

Mechanical Engineering

기계공학

Unit 1

제1단원

Force System Resultants

힘 체계의 합력

KEY TERMS AND CONCEPTS

주요 용어 및 개념

load distribution on shelves and dams

Load distribution helps engineers describe how force spreads across a surface or structure. A distributed load is a continuous force per unit area, rather than a single point force. It is a common idea in many practical situations.

A bookshelf full of stacked books is one simple example. The weight of the books is spread along the shelf, so the pressure changes across the surface. This pressure is measured in Newtons per square meter, or Pascals.

A hydroelectric dam gives another clear example. The submerged surface can be modeled as a rectangular plate. The force on a small piece of that plate, with length dx, is written as wdx, where w is the force per unit area.

The total load on the plate is found by integrating the force from each small element. The size of the resultant force is related to the area under the load curve. Its line of action passes through the centroid of that area. This point is called the center of pressure, and it is important for designing structures that can resist external forces.

Distributed loads also appear in many other situations. Snow on a roof, wind on a structure, and the weight of a car on a bridge are all examples. Understanding these loads helps engineers build safe and robust structures.

Load Distribution on Shelves and Dams

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Load distribution helps engineers describe how force spreads across a surface or structure. A distributed load is a continuous force per unit area, rather than a single point force. It is a common idea in many practical situations. A bookshelf full of stacked books is one simple example. The weight of the books is spread along the shelf, so the pressure changes across the surface. This pressure is measured in Newtons per square meter, or Pascals. A hydroelectric dam gives another clear...

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key terms and concepts

Learn how distributed loads spread force across shelves, dams, roofs, and bridges, and how engineers use integration and the center of pressure to design safe structures.

Load Distribution on Shelves and Dams | JoVE K12

JoVE Core Mechanical Engineering offers concise, easy-to-understand animated videos covering key topics such as equilibrium, forces, truss analysis, and structural mechanics. Explore their real-world applications, and witness these concepts in action through scientist-led experiments.

mechanical engineering

Load Distribution on Shelves and Dams

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