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Wan, C. (author), Markine, V.L. (author), Dollevoet, R.P.B.J. (author)This paper presents a methodology for improving the crossing (frog) geometry through the robust optimisation approach, wherein the variability of the design parameters within a prescribed tolerance is included in the optimisation problem. Here, the crossing geometry is defined by parameterising the B-spline represented cross-sectional shape and...journal article 2016