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Hello. I would like to ask if there is a specific formula for calculating the internal stress of thick wall pipe subjected to shear in a plane perpendicular to the axis of the pipe. Bellow you have attached the situation which I am trying to solve.The thick wall pipe is subjected to shear via...

Hello. I would like to ask if there is a specific formula for calculating the internal stress of thick wall pipe subjected to shear in a plane perpendicular to the axis of the pipe. Bellow you have attached the situation which I am trying to solve.The thick wall pipe is subjected to shear via...

Hello Terry. Thank you for your answer.In your analysis are you considering the weld as a material with different properties? Are there any consideration to take in account except the weld geometry? This weekend I shall finish the geometry of my model regarding with the R1MS method and I shall...

Hello. I would like to ask help in trying to evaluate a structure which is welded.I am no expert in Abaqus but I like to get to the bottom of it and with the help of Eng-Tips colleagues. I had attached the drawings in a simplified form for my problem.Essentially I have the same principle for the...

Hello. I would like to ask help in trying to evaluate a structure which is welded.I am no expert in Abaqus but I like to get to the bottom of it and with the help of Eng-Tips colleagues. I had attached the drawings in a simplified form for my problem.Essentially I have the same principle for the...

Guys what I am doing wrong in my calculations? The summation of moments of Fx component and the Fy component of the hydraulic cylinders around pint A (clockwise) is lower than the moment of By at A (counterclockwise). Is there a problem that I tried to solve the linkage putting the conditions...

Hello. I found out where is the center pf gravity. It is 1815 mm away to the right from A.The total mass of the truck is 33 tons = 323619 N. The force developed by hydraulic cylinders is 490625 N. From the first look I don't think the cylinders can lift the load. Please advise. Thank You. P.S...

Hello Indeed: I just wanted to do the calculation for one side. Meaning: 1 cylinder = 245 kN, for the left side I have 22 tons - calculating for 1 cylinder will be 22/2=11 tons.I made some rough assumptions because I don't have all the data so I choose Rby=120kN.If Rby=22 tons than take in...

@jlnsol...the truck with cargo has maximum 34 tons.Truck (10 tons) + cargo (16 tons) + some auxiliaries (8 tons) = total weight 34 tons. They had calculated that with regard to all CG (truck,cargo,auxiliaries) when the truck is lifted on the 2 bogies the weight distribution is : front bogie 22...

Hello. Unfortunately the person with CG data is on a vacation, and I can get the data only Monday. Hope that you will have the patience. I wish you a good weekend. Thank You.

zekeman I hope from all my heart that you are right and I am wrong.

@rb1957 ...the picture with the truck lifted.http://img705.imageshack.us/img705/395/13959877.jpg

oq172...tomorrow first morning I shall post the CG location.

what's the link geometry with the truck lifted ? I don't understand the question... The hydraulic system is a pressure sensing load - the variable displacement pump shall deliver the flow in accordingly with load.

rb1957...both hydraulic cylinders are synchronized by a mechanical linkage. The back of the truck is lifted by another 2 hydraulic cylinders. The CG i can deliver only tomorrow, because the person who has the data gave me only the load repartition for the front bogie (22 tons) and rear bogie (12...

In order to avoid any confusion anymore I had attached the picture of the equipment which was designed. Thank You.http://img811.imageshack.us/img811/356/railroadtruck.jpg

flash3780 the mass of the lifting arm is 80 kg.

chicopee indeed I agree with you. But for now I need my statical analysis in order to see if from this very basic point of view I am wrong. Tomorrow I need to do something, I hope I shall not do something foolish in panic.

By the calculation which where made from the file delivered by oq172 I had obtained that I need a cylinder force of aprox 300kN. :(((( Can someone else do the calculations and tell me if I my calculations are correct? Thank You.

As I had promised this is the the real sketch of the problem. Node E can rotate,but is constrained along X and Y Node B can rotate and move along X, but in Y direction can't because of the load. Nodes A,E can rotate but are fixed to the structure (black line) and will move in X and Y direction...