When we are checking the bearing strength of a hollow section, we would check for yielding and buckling in the walls of the tube based on an assumption that the load spreads out based on the following figure (AS4100 or AS5100.6). Yielding is checked over the width 'bbf' and buckling is checked for a notional column with width 'bb'.
I am not very familiar with overseas codes, but I assume it is the same in principle.
However, what happens when we have two concentrated loads on opposite sides of the tube? Is there as favourable a spread of the load compared to the above case? My instinct tells me that the load travels much more directly from one concentrated force to the other.
I have done a rough FE model of such a case and found the strength to be about 25% less than what the code predicts. However this is just one particular example and I am not confident that it would be the same in every case.
I can't find any guidelines when it comes to the crushing or clamping strength of a hollow section. Any ideas?
I am not very familiar with overseas codes, but I assume it is the same in principle.
However, what happens when we have two concentrated loads on opposite sides of the tube? Is there as favourable a spread of the load compared to the above case? My instinct tells me that the load travels much more directly from one concentrated force to the other.
I have done a rough FE model of such a case and found the strength to be about 25% less than what the code predicts. However this is just one particular example and I am not confident that it would be the same in every case.
I can't find any guidelines when it comes to the crushing or clamping strength of a hollow section. Any ideas?
