Mathematical Modeling and Parameters Estimation of Car Crash Using Eigensystem Realization Algorithm and Curve-Fitting Approaches

Table 1

Parameters estimation.

Parameters	Case 1	Case 2	Case 3	Case 4
	𝑚1=(1/3)𝑚𝑡	𝑚1=(2/3)𝑚𝑡	𝑚1=(1/4)𝑚𝑡	𝑚1=(3/4)𝑚𝑡
	Dynamic crash (cm) = 80	Dynamic crash (cm) = 66	Dynamic crash (cm) = 69	Dynamic crash (cm) = 49.8
	Time of crash (s) = 0.17	Time of crash (s) = 0.15	Time of crash (s) = 0.14	Time of crash (s) = 0.11
𝑘1 [N/m]	45929		74681
𝑘2 [N/m]	40731		45821
𝑐1 [Ns/m]	13687		18176
𝑐2 [Ns/m]	9952		11196