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

La tensión ejercida sobre un material debido a la presión de contacto creada al interactuar con otro objeto se denomina tensión de rodamiento.
Considere dos placas conectadas por un perno. El perno aplica una fuerza interna sobre una de las placas. Esta fuerza interna es equivalente pero opuesta a la fuerza que la placa ejerce sobre el perno.
Aquí, la fuerza interna no es única, sino el resultado de numerosas fuerzas más pequeñas que se distribuyen a través de la superficie interior del semicilindro.
Debido a la complejidad de las fuerzas más pequeñas y las tensiones correspondientes, a menudo se usa una tensión nominal promedio, conocida como tensión de rodamiento, para simplificar.
La tensión del rodamiento se calcula dividiendo la fuerza interna por el área del rectángulo que representa la proyección del perno en la sección de la placa. Esta área es el producto del grosor de la placa y el diámetro del perno.
El concepto de tensión de soporte es fundamental para garantizar diseños estructurales seguros y eficientes y, por lo tanto, mejora la vida útil de la estructura.

tensión de rodamiento

Bearing Stress

La tensión de apoyo se refiere a la presión de contacto entre dos cuerpos separados. Para visualizar esto, imagine un perno atravesado por una placa. El perno aplica una fuerza a la placa, que ejerce una fuerza igual pero opuesta sobre el perno. Esta fuerza no es sólo una entidad singular sino una compilación de numerosas fuerzas más pequeñas distribuidas a lo largo de la superficie de contacto entre el perno y la placa.

Debido a la complejidad de estas microfuerzas, los ingenieros suelen utilizar un valor promedio, conocido como tensión de apoyo, para simplificar. La tensión de apoyo se determina dividiendo la carga aplicada al perno por el área proyectada del perno sobre la placa.

<img alt="Equation 1" src="/files/ftp_upload/15581/15581_Equation_1.svg" style="text-align: center; height: 46px;">
Comprender la tensión de los rodamientos es una parte esencial de la ingeniería estructural. Proporciona a los ingenieros una comprensión crítica de cómo interactúan las diferentes fuerzas dentro de una estructura. Este conocimiento es crucial a la hora de diseñar estructuras, ya que ayuda a garantizar la seguridad y eficiencia de sus diseños.

Al calcular con precisión la tensión de apoyo, los ingenieros pueden prevenir posibles fallas debido a una fuerza excesiva y extender la vida útil de la estructura. En conclusión, la tensión de apoyo es un concepto fundamental en la ingeniería estructural. Es un factor clave para determinar la durabilidad y seguridad de una estructura.

Tensión de rodamiento

La tensión ejercida sobre un material debido a la presión de contacto creada al interactuar con otro objeto se denomina tensión de rodamiento.
Considere dos platos ...

Education

Educación

JoVE Core

Mechanical Engineering

Ingeniería Mecánica

Unit 1

Unidad 1

Concept of Stress

Concepto de estrés

KEY TERMS AND CONCEPTS

TÉRMINOS Y CONCEPTOS CLAVE

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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