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The central aim is to develop a lightweight, compliant design for railway motor bogie frames through a multi-stage optimization process.

January 22, 2026Applied SciencesOpen Access

Multi-Stage Topology Optimization for Structural Redesign of Railway Motor Bogie Frames

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Demonstrates structural optimization to enhance lightweight design in railway bogies, indicating potential for improved performance.

The central aim is to develop a lightweight, compliant design for railway motor bogie frames through a multi-stage optimization process.
Implemented a two-stage topology optimization workflow
Conducted numerical simulations to evaluate frame performance
Performed sensitivity analysis to identify critical load scenarios
Applied symmetry constraints to simplify optimization and geometric reconstruction
Focused on manufacturing constraints in the second optimization stage
Achieved approximately 18% mass reduction through optimized material distribution
Increased number of optimization parameters led to a 50% rise in solver iterations
Dynamic analysis indicated the first natural frequency was above 60 Hz
Static and fatigue assessments aligned stress distributions with the original frame

Cascino et al. (2026) studied this question.

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