Robust Assignment of Natural Frequencies and Antiresonances in Vibrating Systems through Dynamic Structural Modification

Table 6

Test-case 2: original and modified system design variables and constraints.

Parameter	Value	Modification bounds	Modified system without robustness (method [22])	Modified system with robustness (proposed method)
m3 (kg)	8.214	[0; 1.080]	8.761	8.744
m4 (kg)	2.609	[0; 1.080]	3.213	3.582
(Nm^−1)	94.26e3	[0; 144.9e3]	98.44e3	207.51e3
(Nm^−1)	94.26e3	[0; 144.9e3]	99.85e3	105.25e3
k34 (Nm^−1)	75.47e3	[0; 144.9e3]	75.90e3	79.91e3
k45 (Nm^−1)	83.40e3	[0; 144.9e3]	85.27e3	89.18e3