Question

2014 Q1 300kN ouside diemeter 0305 Figure Q1b (b) A column in a temporary structure consists of two steel tubular sections as shown in figure Q1b. The lower section is 3m high and has an outside diameter of 310mm and the high and has an outside diameter of 305mm. Both sections have an inside diameter of 300mm upper section is 2m Assuming a downward vertical load of 300kN at the top of the column, set up a system of ID finite elements to represent this system and use it to solve for displacement, stress and strain Briefly state any assumptions made (e) It is suggested that the inside of the colun could be filled with concrete (E-20GPa) for greater strength. Two cases are possible - either the concrete binds solidly to the steel, or it makes no firm contact with the steel along the column. In each of these cases, sketch a revised set of elements and indicate how your system stiffness matix would change from part (b) by adding the appropriate stiffness values. Do not recalculate a solution

Answer 1

In this solution some basic concepts and formulas of FEM are used. For more information, refer to any standard textbook or drop a comment below. Please give a Thumbs Up, if solution is helpful.

Solution :

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