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

Table 5

Parameters of the 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	2.78	7.38	0.18	2.32	15.20	1.76	11.11	0.05
Test 2	3.35	8.10	0.16	2.75	16.95	2.34	17.36	0.07
Test 3	3.58	8.38	0.16	2.93	18.36	2.48	17.94	0.07