Yeah a half a meter fall will cause what's called a dynamic load which will increase the forces greatly.
Unfortunatly the only way to test it is to simulate the drop either with yourself or something that weighs the same as you.
thx, i think i will not longer try to fall half a meter, thats too much depth risky and i am sure the pull up bar will slip. I will slowly increase the amount of fall and watch, if the pull up bar slips
Like I said in chat, get a bar that has ends that you can screw into the wall. Rubber ends cause slippage and won't hold you when you start convulsing. 2 inch drywall or wood screws will work, and won't hit any electrical wiring or water pipes. Screw into a stud or frame (use a studfinder or just knock on the wall with your hand)
using a studfinder is a good idea, i have a wallpaper and dont know whats behind. I already tested shaking around while hanging on it and it bended just a little, tomorrow i will try to test convulsing while have a rope wrapped around my hands to make sure it will probably get through my seizures while dying. If the pull up bar will behave unexpectedly, i still can consider using another pullup bar and put screws to the wall.
Put a helmet on your head? And a soft mattress on the ground?
good idea with the helmet, i think i'll use one before i test the bar, unfortunately there is no space for the mattress, instead i can use a sleeping pad