Originally Posted by **ChipB** Failure of the column will come from either of two effects:
1. Buckling. You say you already have data for the critical buckling load for the column. The critical load for a column where load is aopplied at the midpoint rather than the end is 4 times greater, since P_crit is proportional to the inverse of the column length squarred.
2. Crushing. For short columns failure comes from crushing of the material rather than buckling. To calculate the crushing load you need data on the yield stress of the material, then multiply by the cross-sectional area to get the corresponding load.
The column fails when the load exceeds either the critical buckling load or the crushing load. |

Thank you for replying, sorry for not making it clear, here is some more details, two end of the column is fixed(two rocker on each end), and there is the force applied at the midpoint is perpendicular to that column,

so does that mean the maximum force it can take at midpoint is 4*P(critical) or i need some more datas ?

Best regards