Numerical and Experimental Dynamic Analysis of IC Engine Test Beds Equipped with Highly Flexible Couplings

Table 7

Numerical natural frequencies (in % of ) estimated by the FE model regarding the modified drivelines. Italic characters highlight frequencies that fall in the frequency band of interest.

(a) Simulation results 45 Shore MOD 1

Mode 1	2.5% [1st TG]
Mode 2	6.1% [1st LC]
Mode 3	8% [2nd TG]
Mode 4	13.8% [2nd LC]
Mode 5	17.8% [3rd LC]
Mode 6	26.1% [1st AF]
Mode 7	72.2% [3rd TG]
Mode 8	98.6% [1st BS]

(b) Simulation results 70 Shore MOD 2

Mode 1	4.5% [1st TG]
Mode 2	13.4% [1st LC]
Mode 3	24.3% [2nd TG]
Mode 4	33.7% [2nd LC]
Mode 5	60.9% [3rd LC]
Mode 6	73.1% [1st AF]
Mode 7	80.4% [3rd TG]

(c) Simulation results 60 Shore MOD 3

Mode 1	3.7% [1st TG]
Mode 2	11.5% [1st LC]
Mode 3	24.9% [2nd TG]
Mode 4	32.7% [2nd LC]
Mode 5	62.2% [3rd LC]
Mode 6	73.1% [1st AF]
Mode 7	77.6% [3rd TG]