Comparative Study on Mechanical Properties of a Tube-Crushing Dissipator and a Symmetric Tube-Crushing Dissipator

Table 6

Parameters of the symmetric tube-crushing dissipators in the dynamic tests.

No.	Free-falling distance (m)	Impact velocity (m/s)	Compression distance of the dissipator (m)	Total energy (kJ)	Activation force (kN)	Absorbed energy (kJ)	Mean force at the crushing section (kN)	Braking time (s)
Test 1	2.94	7.59	0.12	2.45	22.05	2.32	21.85	0.06
Test 2	3.73	8.55	0.13	3.11	24.07	2.85	24.06	0.09