Lifter - Calculate the maximum stress

[Jonatasrf]

Hi,

I would like to calculate the maximum stress on P4. P3 will move in the Z direction, taking along P1, P2, and P4. Knowing that P5 is a fixed bushing, the rod P4 will move at an angle of 7 degrees, while P1 and P2 will move at an angle of 15 degrees. I would appreciate some help to start the calculations, considering also the friction of the materials. Could someone help me with this?

Thank you very much!

[URL unfurl="true"]https://res.cloudinary.com/engineering-com/image/upload/v1677009832/tips/estudo_2_m9im9c.pdf[/url]

 

[Scuka]

A free body diagram is your first step.

Draw a structure of interest, draw in all the active forces, draw in all the reaction forces, i.e. forces that result from your structure being constrained in any way by the outside world (joints, friction), and write your equilibrium equations.

 

[Jonatasrf]

Thank you Scuka! I will make the diagram and as I go through the calculations, I will post the development here.