Design of Leaf Spring | Problems | Design of Machine Elements

[@mukeshmeena604]

A truck spring has 10 leaves and is supported at a span length of 100 cm, with a central band of 80 mm wide. A load of 6 KN is applied at the center of spring whose permissible stress is 300 N/mm2. The spring has a ratio of total depth to width of about 2.5. Determine the width, thickness, deflection and length of all leaves.

[@veerendradarling1476]

Amazing lectures

[@themechanicalengineer]

Thank you 💞

[@sankarv4812]

Sir L10 d value is not correct sir

[@designerpatel1657]

In S. Chand Machine Design book page no. 877 there is an example

[@designerpatel1657]

There is checking shear stress. And there is written ' since the pin is in double shear '. Why it's in double shear?

[@themechanicalengineer]

Because the pin is passing through two plates (Two areas under shear). When it is loaded, there may be a possibility for failure in the two areas, that is why it is called as double shear.. Hope I have answered your question... Couldn't insert images in the comments (Struggling to explain)...

[@user-tz6zl6gm6j]

HOW TO CONTACT YOU SIR?

[@themechanicalengineer]

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[@kiranrajupanamata3327]

Tq sir

[@themechanicalengineer]

Welcome

[@melinaambroggio2611]

Sorry sir, I tried to understand but it was too fast... What is P? What are we calculating?

[@themechanicalengineer]

When designing leaf springs, we only consider half of the spring's portion. So, if the total load acting on the spring is W, then P represents half of W. With this information, we calculate all the dimensions of the spring.

[@cutelariacajarana3075]

Hello, can you tell me if springs with the same K and different diameters have different speeds? Example; a spring with a diameter of 50mm with a total length of 500mm, assuming that it would have a rate of 0.500 kgf/mm and another spring with the same K and the same length but with a diameter of 60mm would have different speeds. If you compress both and release, would the speed be the same or would one extend faster than the other? This is my question, if you can help I would appreciate it. Thanks.

[@themechanicalengineer]

If two springs have the same spring constant (k) and are compressed by the same amount, they will exert the same force. However, the speed at which each spring extends might still vary slightly due to factors such as mass and diameter. Typically, a spring with a larger diameter, having more mass, might extend slightly slower than a narrower spring.