Many thanks all
Now I can see it ...............yes the top left and bottom right jack forces do not reduce, and the top right reaction increases by 15 tonnes with the bottom left reaction increasing by 5 tonnes..........This all then stays in equilibrium.( I'll pass on the tonnes/tons debate...
I think I have included it
See........ it's in the top line.....the little devil.
left to right 68.3 + 88.3 + 10 = 166.6
Right to left 98.3 + 78.3 =176
don't know what else I can do.
Chas
frv
There was a time when we spelt it the same....then we went metric....:(
If I've done it correctlly the top left reaction becomes 68.3 tons (when in rome) (83.3-15)
Bottom left reaction becomes 88.3 (83.3+5)
Top right reaction becomes 98.3 (83.3+15)
Bottom right reaction becomes 78.3...
Hmmm.
I,ve done what you suggest............but..........by my reckoning the resulting forces don't balance when I check for equilibrium. i.e. left hand forces don't equal right hand forces. I'm 10 tonnes out of balance.
This is driving me nuts!
Charlie.
Hi all
I am trying to analyse the reactions on a complicated piece of equipment carrying external forces. The equipment is supported by hydraulic jacks which apply internal forces or pre-loads to fixed surfaces to generate frictional support capacity
I have simplified the problem (hopefully)...
Dik
Many thanks for the assistance. If I use the plastic modulus it gets the plate thickness down to 21mm. which is nearer the number I was thinking about.
Many thanks
Many thanks for taking the time to look this over. I appreciate the assistance.
The formula I've used are from the concrete design example I've followed...............so I'm not sure..........I suppose this explaines the reason for my post.
Once again ...........Many thanks
Chas
Many thanks 271828.
Apologies but I have a bit of difficulty following your illustartion. I get the general 'jist' of it
Attached is my effort, this follows a concrete design example, but is for a steel plate.
The deflection of the plate is taken as unity. The sagging moments are taken as...
Thanks for the advice. I'm using a design guide from the Reinforced Concrete council called 'Practical Yield Line Design' downloaded from the net.
This uses the 'work' method where external energy expended by the displacement of loads is equated to the internal energy dissipated by the yield...
Hi all
As part of a steel connection design, I have to check a rectangular steel plate supported on 3 sides. The plate is 180mm x 195mm with a bolt hole in the middle.
The plates supports a fixed/continuous.
I would like to use the yield Line theory to check the plate thickness to get a bit...
