This craft of mine has such bendy wings. Important: you have to get the attachment points correct, make sure you don’t use too many wings, as that will make them floppy, and make the fuselage pieces overlap, have parts collisions disabled, and make every part attached to the wings directly or indirectly the right weight, so that the wings bend under load, but the acceleration of the parts somewhat counteracts the lift of the wings. Positive(?) side effect: your aircraft may experience real wing flutter.

Realsavageman has a tutorial on it somewhere

@ReinMcDeer Yes but it will work only when there will be some pitch applied

Naturally if you split the wing into segments it'll bend on it's own, split it and joint the wing part together and give each wing segment a fuselage cover and that's it.
Floppy rotator with small degree of motion work too.

@WereOutOfNames You could probably use IAS and GForce

@Chillybaconface thank i will help to solve it myself but i will make it myself with my own creation

@Cereal Click here for the blueprint, You only need to log in with your google acc then you can get the full resolution

where do you get the blueprint

@GarfieId I have already seen this in some builds but I think it is too brutal... maybe with springs it could be more realistic.
I am thinking of another method which would be more physically pleasant, that would be to force the wings to create enough lift to bend between them, idk if it is very easy, I never tested

I just split the wing into segments and use detachers lol works well enough for me