| Overloaded vehicles in recent years due to the recession phenomenon of brake drum freq uent traffic accidents,the braking system as the lifeblood of automobile safety performance,d evelopment research has made great progress in recent years,aluminium magnesium alloy bra ke disc also has obtained certain achievements and successfully applied to the automobile ind ustry,therefore,it is necessary to improve the brake drum optimization design improvement,t his article will aluminium magnesium alloy as substrate material of brake drum,an enterprise must be based on the situation of research,overloading the surface of the aluminum magnesiu m alloy brake drum ceramic technology is also very mature,and the finite element analysis w as carried out on the brake drum and so on work to seek to have good heat dissipation perform ance,Stable braking efficiency of the braking system.This article mainly aims at the cooling performance of the traditional brake drum is poor reason,to replace brake drum materials,selection of aluminum magnesium alloy elements as t he substrate material for the brake drum,in order to strengthen the brake drum substrate mater ial hardness,strength,can optimize the ratio of material elements,in order to strengthen the a dditional friction to the brake drum surface a layer of ceramic surface,to enhance heat dissipa tion on the surface of the brake drum brake drum of thread to increase the cooling area,and th e two kinds of material brake drum structure,thermal analysis and thermal solid coupling anal ysis;Secondly to improve optimization of the structure of the brake shoe,for brake system de sign and calculation in the first place,a clear theoretical calculation process of each parameter,as to provide theoretical basis for structure improvement for the rest of the article,the traditio nal Angle of friction lining should not be greater than 120 degrees,is beyond the scope of selflocking will happen,so the two brake shoe into four pieces,purpose is to reduce the Angle of friction lining,good for heat dissipation,avoid hot recession,increase the efficiency of the bra ke.This paper USES ANSYS finite element analysis software for two kinds of material brak e drum structure analysis,thermal analysis,and finally the thermosetting coupling analysis,th rough the thermal analysis proved that the aluminum magnesium alloy ceramic surface heat di ssipation performance of brake drum to nearly 20% higher than that of cast iron materials,cho ose aluminium magnesium alloy material at the same time,the quality of the brake drum to re duce 50%,conform to the development trend of the automotive lightweighting;Secondly,the structural analysis of the brake shoes of the two structures shows that the stress and strain of t he improved brake shoes are also relatively reduced,and the braking efficiency is improved."aluminum magnesium alloy ceramic brake drum for heavyduty truck" solves the problem of h igh temperature and thermal recession of the brake drum during the braking of the existing he avy-duty truck. |
PDF Full Text Request