Designing a Strong Connection with Bolts and Washers

What parameters are required when making a connection using a bolt, nut, and two washers?

Parameters Required for Connection Using Bolts and Washers

When making a connection using a bolt, nut, and two washers, the following parameters are required:

1. Nominal size of bolt (d)

2. Nominal diameter of the hole (dh)

3. Diameter of washer (dw)

4. Thickness of washer (tw)

5. Allowable bearing stress of the washer on the board (σb)allow

6. Allowable tensile stress of the bolt (σt)allow

Designing a Strong Connection with Bolts and Washers

When designing a connection using a bolt, nut, and two washers, various parameters must be taken into consideration to ensure its strength and stability.

The bolt and nut must be strong enough to resist the tensile forces produced when joining two plates together. The bolt should be able to support both plates and any shear forces applied to the connection.

The thickness of the washer is crucial as it determines the area of the bearing surface. The thickness must be sufficient to distribute the load evenly across the plate's surface and greater than the plates’ thickness it is joining.

Additionally, the diameter of the hole should be larger than the bolt's diameter to allow smooth sliding without binding. The washer's diameter should also exceed the bolt’s diameter to evenly distribute bearing stress on the plate.

Considering the allowable bearing stress of the washer on the board and the allowable tensile stress of the bolt is essential for designing the connection effectively.

In conclusion, the design of a connection with bolts and washers requires careful consideration of parameters like washer thickness, hole and washer diameter, and allowable stresses. All these factors are crucial for a strong and reliable connection.