Research Article

Risk Evaluation of Bogie System Based on Extension Theory and Entropy Weight Method

Table 1

Index standards.

Evaluation index Low riskMedium riskHigh risk

Effective value0.05, 0.85(0.085, 0.1(0.1, 1)
Peak factor2.5, 3.2(3.2, 3.5(3.5, 30)
Kurtosis2.5, 3.5(3.5, 4(4, 30)
Wheel diameter(780, 840(775, 780770, 775
Wheel rim width(29, 32(28, 2926, 28
Difference of coaxial wheel diameter0, 1.5)1.5, 2)2, 10)
Difference of co-bogie wheel diameter0, 3)3, 4)4, 15)
Traction motor temperature0, 70)70, 100)100, 300)
Brake shoe thickness20, 5515, 20)0, 15)
Risk of elastic suspension device0, 50)50, 75)75, 100)
Risk of bogie frame0, 50)50, 75)75, 100)
Risk of ground device0, 50)50, 75)75, 100)