Temperature Field and Thermal Stress Analyses of High-Speed Train Brake Disc Under Pad Variations
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چکیده
منابع مشابه
Temperature Field and Thermal Stress Analyses of High-Speed Train Brake Disc Under Pad Variations
Transient heat transfer analysis of disc brake has been performed to find out an ideal shape of pad geometry. The analysis has taken frictional heat between brake disc and pads as heat flux onto the friction surface, the disc and the pad's temperature fields then were explored involving thermal conduction, forced convection and surface radiation effects. The disc thermal expansion stress was th...
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In severe conditions, braking may cause the temperature on the disc-pad interface to rise up to 800 °C 1 . At such a temperature, the properties of organic compounds are disrupted, coefficient of friction (CoF) decreases, and the rate of wear increases exponentially. This phenomenon is called “fade” 2 . Ideal brake pads, without causing any fades, are expected to function in uniform and stable ...
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The construction of new high speed railway infrastructure in many European countries is actually a great civil engineering effort. One of the main design issues is related to the fact that trains at speeds above 220 km/h may induce resonance effects in structures as bridges, subway frames, etc. In consequence, the design of such structures requires dynamic calculations. Several methods are avai...
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In this thesis thermal stresses in a brake disc during a braking operation are simulated. The simulations are performed by using a sequential approach where the temperature history generated during a frictional heat analysis is used as an input for the stress analysis. The frictional heat analysis is based on the Eulerian method, which requires significantly lower computational time as compared...
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ژورنال
عنوان ژورنال: The Open Mechanical Engineering Journal
سال: 2015
ISSN: 1874-155X
DOI: 10.2174/1874155x01509010371