Multiobjective Topology Optimization of Spatial-Structure Joints

Table 8

Comparison of the joints’ performance.

Parameters	Hollow joint	Optimized joint	Difference%
Weight/kg	358.6	359.8	0.3
Axial condition stress/MPa	445.0	276.6	−37.8
Axial condition displacement/mm	1.12	0.56	−50.0
Shear condition stress/MPa	259.0	144.4	−44.2
Shear condition displacement/mm	0.63	0.41	−34.9
Bending moment condition stress/MPa	224.3	146.4	−34.7
Bending moment condition displacement/mm	0.17	0.20	17.6
Combined condition stress/MPa	369.6	229.4	−37.9
Combined condition displacement/mm	0.936	0.407	−46.5
1st frequency/Hz	159.13	213.91	34.4%