Question

Explain the reason that buckling happens during the compression test. Please explain.

Answer 1

total two type of failure is there due to compression, crushing failure and buckling failure.

compression member does not fail entirely by crushing, but also by bending ex. buckling. This happens in the case of long columns. It has also been observed, that all the short columns fail due to their crushing. But, if a long column is subjected to a compressive load, it is subjected to a compressive stress. If the load is gradually increased, the column will reach a stage, when it will start buckling. The load, at which the column tends to have lateral displacement or tends to buckle is called buckling load.. The buckling takes place about the axis having minimum radius of gyration or least moment of inertia.so that this is reason of the buckling in compression.