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LittleInch Thanks for help I'll start search about some missing values

Dik The 460 tons are quite uniform distributed along 85 meter long there is nothing we can do about it the space between the two floating docks is restricted by the pontoons width

dik i don't think is possible as there is limit of 12 degrees between the crane center line and the wire

LittleInch Sway is anther problem which will be required to be investigated also but from what you said is if the acceleration is steady fixed the above calculation is considered correct ,right ?

JStephen Thanks Just to make sure lets assume that acceleration = 2 m/sec2 the pontoon mass is 460 tons added mass is = 460 * 2 = 920 newton = 93.7 tons Total effecting mass = 460 + 93.7 = 553.7 Tons ?? i made this calculation before and i had doubt about it because as LittleInch said...

JStephen This lift had already performed 3 times and it's done safely I just wanted to investigate it more with more worse cases

LittleInch I agree with you that big floating cranes won't move that fast, but in our case it's moving that fast in somecases The overload sensors shut down all motors when this happen even the pontoon weight is 460 tons and both floating cranes have sum of 1000 tons lifting capacity Thank...

Dear Sir's I have a pontoon with length of 85 meters which is lifted by two floating cranes as shown my question is when the floating crane is in heaving motion (go up and down suddenly due to do waves) how can i calculate this motion impact on wires and on the pontoon itself it's something...

Dear Sirs I'm quite new with dealing with ansys I'm working now on a on-linear analysis i followed alot of tutorials on internet and followed them step by step i'm seeking to plot force against displacement in a graph in my thought that the curve should have positive slop and go up until...

it's some thing like gate and the load comes from water current it will open like two times a day but it should be easy to remove lock so i can open in short time for emergencies

@TLHS thanks for help what other solution do you advice me to use in stead of this one ? all i need is to prevent these two beams from going up is same time i need this lock to be temporary so i can open it when i need to let the beams to move up

@KootK my BM is 500 kg.m so if the distance is 2 meters, tension is 250 kg on each pin ?

@Ingenuity Sorry for mistake bending moment is 500 kg.m

Dear Sirs In attached picture i have two beams which has hing at their end and they are supposed to move upwards under effect of uniform distributed load but their movement must be stopped using two sets (each set consist of two eye plates each plate is welded on a beam and pin going through...