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Multi-Objective Optimization Study for the Turnout Sub-Rail Parameters Based on Orthogonal Experiment
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The stiffness and damping characteristics under the turnout rail are important factors affecting vehicle safety
and stable running. According to the variable cross-section structure of a single 60 kg/m turnout No.18, a multi-body
dynamic model of the vehicle-turnout coupled system is established. Based on the orthogonal test method, 25 group
working conditions have been designed with the combination of the sub-rail stiffness and damping parameters. It has been
found that the stiffness parameters under the rail have a greater impact on the vehicle’s performance through the range
analysis of the simulation results. The vertical sub-rail stiffness mainly influences the vehicle’s vertical response and
Sperling indicator. The lateral stiffness affects the derailment coefficient and the riding comfort. The matching scheme of
the sub-rail stiffness and damping parameters is deduced by aiming towards the optimal vehicle security, stability and
comfort, which provides a reference for the sub-rail structure design.
Bentham Science Publishers Ltd.
Title: Multi-Objective Optimization Study for the Turnout Sub-Rail Parameters
Based on Orthogonal Experiment
Description:
The stiffness and damping characteristics under the turnout rail are important factors affecting vehicle safety
and stable running.
According to the variable cross-section structure of a single 60 kg/m turnout No.
18, a multi-body
dynamic model of the vehicle-turnout coupled system is established.
Based on the orthogonal test method, 25 group
working conditions have been designed with the combination of the sub-rail stiffness and damping parameters.
It has been
found that the stiffness parameters under the rail have a greater impact on the vehicle’s performance through the range
analysis of the simulation results.
The vertical sub-rail stiffness mainly influences the vehicle’s vertical response and
Sperling indicator.
The lateral stiffness affects the derailment coefficient and the riding comfort.
The matching scheme of
the sub-rail stiffness and damping parameters is deduced by aiming towards the optimal vehicle security, stability and
comfort, which provides a reference for the sub-rail structure design.
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