Mohr coulomb is meant to hydroestatic-pressure dependant materials such as rock and concrete. In these materials the strenght increases with the global pressure. Von mises is for materials wich failure only depens on the deviatoric stress such as steel. But this alone doesn't tell you anything about ductil or brittle,some steels can be ductil and you would stille model it with von mises. If you want to know about what happens after you reach the failure surface of the material, you need to define a "flow rule" or some fancy crack-growth criteria.
It seems that the approach for "Connections" is wrong. As you know, the bench like this one is gathered without any glue or other contacts, so you can imagine to yourself the next: 1) the upper slab stands on two supports and can be represented as a simply supported beam 2) secondly, the reactions of this simply supported beam are equal to the weight of a person devided by 2 ( W/2) and this reaction force goes into the legs as axial force That is why you see the bending moments on the legs (there sould be only a compression force) And that is why when you use FOS you see the weak spots in the slab, above the legs (it shows that there is a lot of tension on the upper face) ..... Sorry for my english/
Very useful, thanks!
Great video. Thank you.
Mohr coulomb is meant to hydroestatic-pressure dependant materials such as rock and concrete. In these materials the strenght increases with the global pressure. Von mises is for materials wich failure only depens on the deviatoric stress such as steel. But this alone doesn't tell you anything about ductil or brittle,some steels can be ductil and you would stille model it with von mises. If you want to know about what happens after you reach the failure surface of the material, you need to define a "flow rule" or some fancy crack-growth criteria.
Great. Thank U.
thanks
Thank you sir
Thank you
Where I see compressive stress, Please you tell source. Example GGG60 Metarial. Thanks Guy.
It seems that the approach for "Connections" is wrong. As you know, the bench like this one is gathered without any glue or other contacts, so you can imagine to yourself the next:
1) the upper slab stands on two supports and can be represented as a simply supported beam
2) secondly, the reactions of this simply supported beam are equal to the weight of a person devided by 2 ( W/2) and this reaction force goes into the legs as axial force
That is why you see the bending moments on the legs (there sould be only a compression force)
And that is why when you use FOS you see the weak spots in the slab, above the legs (it shows that there is a lot of tension on the upper face)
..... Sorry for my english/
dankeschün