According to https://wiki.beamng.com/JBeam_Reference#beams beamSpring - How much a beam will change length when a force is applied (N/m).Analogous to terms such as stiffness, rigidity, or modulus. beamDamp - How much energy is dissipated as a beam changes length (N/m/s).Damping causes vibration in the beam to fade out over time. And it looks like you are looking at a hydro, and https://wiki.beamng.com/Hydros didn't say anything about the limited versions.
there are beamlimitdamp and limitspring in semi suspension and I want to know what is it also thx for the answer
There is nothing on the wiki for it, so I'm just going to assume it is the limited versions of those two, or beamSpring and beamDamp if the hydro is at the limit. I am not sure, so you might need to ask one of the devs about it. Maybe Nadeox knows.
Quoting Wiki : BeamLimitDamp : The damping that begins to be applied when the beam length reaches longBound or shortBound (N/m/s). BeamLimitSpring (didn't find limitspring only) : The spring that begins to be applied when the beam length reaches longBound or shortBound (N/m). For some reasons these can be found in Jbeam Reference and not directly into Beams lol Jbeam Reference
