Why is the deflection of a round flat cover 0 when calculated?
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In the book, flat plate fixation is divided into fixed support and simple support. My doubt is why the deflection is 0? Not crooked at all? When solving for a simply supported edge, the bending moment is 0, which is understandable because the simply supported edge cannot withstand the bending moment. The deflection is 0, I don’t understand. P108 Li Jianguo's "Basics of Design Mechanics of Pressure Vessels and Its Standard Application"
This post was last edited by wanlirn on 2021-8-25 16:27. Of course, it is not the actual situation. It is just to simplify the calculation. There are three assumptions in elastic mechanics. The third one is small deformation. Only by applying linear conditions can the analytical solution be obtained.； And the bolted connection is neither hinged nor fixed, but somewhere in between. You can just read the general meaning of this kind of book, but it cannot be applied in practice. For example, this kind of flat plate is more reliable and has legal basis according to the formulas and legends in GB150. If you want to get something closer to reality, you can only use finite element analysis to get a numerical solution. ；