A Vibration Reliability Analysis Method for the Uncertain Space Beam Structure

Table 1

Natural intervals of the space frame structure.

Frequencies	Sensitivity monotonicity method (Hz)	Optimization algorithm (Hz)
	[51.0809, 54.3731]	[51.0809, 54.3731]
	[64.1601, 68.2445]	[64.1601, 68.2445]
	[75.9927, 80.7316]	[75.9927, 80.7316]
	[78.8702, 83.8342]	[78.8702, 83.8342]
	[94.4190, 100.4346]	[94.4190, 100.4346]
	[124.0793, 131.9354]	[124.0793, 131.9354]