Calculating stress and deflection in steel plate

[Jason]

Hiya,

I'm been calculating stress and deflection in rectangle steel plate, I've been using two methods to see if I get the same results but i get different results. I want to confirm the methods I'm using and if I'm using them correctly. I have attached photos of my calculations, any advice would be greatly appreciated.

 

[Achy47]

Hi there,

Thank you for sharing your calculations and seeking advice. I can offer some insights on the methods you are using and help you confirm if you are using them correctly.

Firstly, it's important to note that stress and deflection calculations for a rectangle steel plate depend on several factors such as the material properties, loading conditions, and boundary conditions. It would be helpful to know these details in order to better understand your calculations.

However, based on the information provided, it seems like you are using two different methods to calculate stress and deflection - one using the bending equation and the other using the moment-curvature equation. Both these methods are commonly used in structural engineering and can yield different results depending on the assumptions and simplifications made.

The bending equation, also known as the flexure formula, is based on the assumption that the plate is subjected to pure bending and has a constant cross-section. This method is suitable for plates with a relatively small thickness compared to the other dimensions.

On the other hand, the moment-curvature equation takes into account the variation of bending moment and curvature along the length of the plate. This method is more accurate for plates with a larger thickness and can account for the effect of shear deformation.

In order to confirm if you are using these methods correctly, I would recommend checking your input parameters such as the applied load, dimensions of the plate, and material properties. It would also be helpful to cross-check your calculations with a reliable reference or software to ensure accuracy.

I hope this helps in clarifying the methods you are using and their differences. If you have any further questions, please feel free to reach out. Best of luck with your calculations!