I am designing a simple truss structure... consider a member of a truss under a compression of xN. As x increases, the member will tend to want to buckle. eulers strut buckling formula states that the force a member buckles at is inversely proportional to the square of the length of the member. so halving the length will multiply this load by 4. I'm certain this isn't a new proposition but I thought Id say it anyway... putting an normally unloaded strut perpendicular to the midpoint of a member under compression, to effectively half the length of the member, as this unloaded strut will constrain the member and prevent it from buckling in the centre? Am i correct? obviously there will be a slight load in the perpendicular strut, but not considerable (i hope). I hope I have explained this fairly well and i would just like some feedback as to whether this is a flawed theory? I understand it wouldnt be as effective as truly halving the length of the member but, should increase the buckling load somewhat?