Name: bolt-to-plate contact pressure
Uploaded: 2025-05-22T09:06:17.000Z
Duration: 1 min 22 s
Channel: JoVE

다른 물체와 상호 작용하는 동안 생성된 접촉 압력으로 인해 재료에 가해지는 응력을 베어링 응력이라고 합니다.
볼트로 연결된 두 개의 플레이트를 생각해 보십시오. 볼트는 플레이트 중 하나에 내부 힘을 가합니다. 이 내부 힘은 플레이트가 볼트에 다시 가하는 힘과 동일하지만 반대입니다.
여기서 내부 힘은 단수가 아니라 반 실린더의 내부 표면에 분산된 수많은 작은 힘의 결과입니다.
더 작은 힘과 해당 응력의 복잡성으로 인해 베어링 응력으로 알려진 평균 공칭 응력이 단순화에 자주 사용됩니다.
베어링 응력은 내부 힘을 플레이트 단면에 대한 볼트의 돌출을 나타내는 직사각형의 면적으로 나누어 계산합니다. 이 영역은 판의 두께와 볼트의 직경의 곱입니다.
베어링 응력의 개념은 안전하고 효율적인 구조 설계를 보장하는 데 중추적인 역할을 하므로 구조물의 수명을 향상시킵니다.

베어링 응력

Bearing Stress

베어링 응력은 두 개의 개별 몸체 사이의 접촉 압력을 나타냅니다. 이를 시각화하려면 볼트가 판을 통과하는 모습을 상상해 보세요. 볼트는 판에 힘을 가하고, 이는 볼트에 다시 동일하지만 반대의 힘을 가합니다. 이 힘은 단지 단일한 실체가 아니라 볼트와 판 사이의 접촉 표면 전체에 분산된 수많은 작은 힘의 조합입니다.

이러한 미세 힘의 복잡성으로 인해 엔지니어는 단순화를 위해 베어링 응력으로 알려진 평균값을 자주 사용합니다. 베어링 응력은 볼트에 적용된 하중을 판에 있는 볼트의 투영 면적으로 나누어 결정됩니다.

<img alt="Equation1" src="/files/ftp_upload/15581/15581_Equation_1.svg" style="height: 46px;">

베어링 응력을 이해하는 것은 구조 엔지니어링의 필수적인 부분입니다. 이를 통해 엔지니어는 구조 내에서 다양한 힘이 어떻게 상호 작용하는지에 대한 중요한 이해를 얻을 수 있습니다. 이 지식은 설계의 안전성과 효율성을 보장하는 데 도움이 되므로 구조물을 설계할 때 매우 중요합니다.

엔지니어는 베어링 응력을 정확하게 계산함으로써 과도한 힘으로 인한 잠재적인 고장을 방지하고 구조물의 수명을 연장할 수 있습니다. 결론적으로 베어링 응력은 구조공학에서 중요한 개념입니다. 구조물의 내구성과 안전성을 결정하는 핵심 요소입니다.

다른 물체와 상호 작용하는 동안 생성된 접촉 압력으로 인해 재료에 가해지는 응력을 베어링 응력이라고 합니다.
두 개의 접시를 고려하십시오 ...

Education

교육

JoVE Core

Mechanical Engineering

기계공학

Unit 1

제1단원

Concept of Stress

스트레스의 개념

KEY TERMS AND CONCEPTS

주요 용어 및 개념

bolt-to-plate contact pressure

Bearing stress is the contact pressure between two separate bodies. A common example is a bolt pushed through a plate. The bolt applies a force to the plate, and the plate pushes back with an equal and opposite force.

That force is not a single point load. It is made up of many smaller forces spread across the contact surface between the bolt and the plate. Because these microforces are complex, engineers use an average value called bearing stress.

Bearing stress is found by dividing the bolt’s applied load by the projected area of the bolt on the plate. This calculation helps engineers understand how forces act inside a structure. It is an important part of structural engineering because it supports safe and efficient design.

By calculating bearing stress correctly, engineers can reduce the risk of failure from too much force. It also helps them improve the lifespan of a structure. Bearing stress is a key factor in judging durability and safety.

Bolt-to-Plate Contact Pressure

normal stress

Normal Stress in Axial Loading

Normal stress acts perpendicular to a material’s cross-sectional area. It appears when a force is applied along the axis of an object, which is called axial loading. Bridge truss members are a practical example of this kind of loading. When a rod carries axial load, internal forces develop across the section. Because these forces act normal to the plane of the section, the stress is called normal stress. Stress here means the average stress over the whole cross-section, not the value at one...

shearing stress

Shear Forces in Bolts and Rivets

Shearing stress is caused by transverse forces acting on an object. These forces create internal forces in the plane where the external forces are applied. The total internal force in that section is called the shear. Average shearing stress is found by dividing the shear by the cross-sectional area. This value is only an average, because shear stress is not spread evenly across the section. It can be zero at the surface and much higher than the average in other areas. Bolts, pins, and rivets...

bearing stress

Bearing stress is the contact pressure between two separate bodies. A common example is a bolt pushed through a plate. The bolt applies a force to the plate, and the plate pushes back with an equal and opposite force. That force is not a single point load. It is made up of many smaller forces spread across the contact surface between the bolt and the plate. Because these microforces are complex, engineers use an average value called bearing stress. Bearing stress is found by dividing the...

applications of stress

Boom and Rod Stress Analysis

Boom and rod stress analysis shows how a pinned support structure carries a load. The boom and the rod are connected by a pin and held in place by brackets and pins. The structure is then separated from its supports so the forces can be studied clearly. A free-body diagram is drawn to identify every force on the boom, the rod, and the load. The reaction forces on both members are found using equilibrium equations. At point P, the reaction causes compression in the boom. At point R, the...

stress on an oblique plane

Axial Load Stress on Inclined Sections

Axial loading creates stress in a material along its central axis. This kind of load can cause compression or elongation, and it produces normal stress. Normal stress acts perpendicular to the material area and can be either tensile or compressive. When the section is not perpendicular to the load, it becomes an oblique plane. On this inclined plane, the stress state includes both normal stress and shearing stress. Shearing stress acts parallel to the area and changes shape without changing...

stress: general loading conditions

Stress Components on a Loaded Body

Stress components on a loaded body can be found by cutting the body through a point with a plane parallel to the xy plane. That section carries the original loads, along with normal forces and shearing forces. The result is a simple way to describe how a structure responds under combined loading. The shearing force in the section can point in different directions within the plane. It is split into two parts that run parallel to the x and y axes. Each part is divided by the area, and as that...

components of stress

Stress Components on a Cube at a Point

Stress components on a small cube help describe how a body behaves under multiple loading. The cube is centered at point O and has stress acting on all six faces, whether the faces are visible or hidden. Normal stress components σx, σy, and σz act perpendicular to the x, y, and z axes. Shearing stress components also act on the cube faces. The visible faces carry shear stresses such as τxy and τxz. The hidden faces carry equal and opposite stresses. This balance keeps the cube in equilibrium.

design consideration

Safety Factors in Structural Design

Safety factors in structural design help engineers choose a material and loading limit that can be used safely. The process begins with a material’s ultimate strength. This value comes from tests that increase force until the material reaches its breaking point or limit. The ultimate load is then divided by the original cross-sectional area to find the ultimate normal stress, or strength. Ultimate shearing stress is another key value used in design. These limits show how much stress a material...

key terms and concepts

Learn how bearing stress describes contact pressure between a bolt and a plate, how it is calculated, and why it matters in structural engineering.

Bolt-to-Plate Contact Pressure | 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

Bolt-to-Plate Contact Pressure

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