Research on Multidisciplinary Optimization Design of Bridge Crane

Table 3

Comparison of the thicknesses before and after optimization.

Main optimal size	Before (mm)	After (mm)
Upper plates	24	20.7
Under plates	24	23.4
Inside plates	6	6
Outside plates	6	6
Small ribbed plates	8	9.5
Big ribbed plates	8	5.6