1. 研究目的与意义（文献综述）

1.purpose and significance

this graduation design requires design the basic parameters through the given power, torque, maximum speed, braking conditions, driving conditions and national standards.using previous knowledge to complete the structural design of the various parts of the chassis.and using the 3d software building the 3d modeling.

2. 研究的基本内容与方案

this subject mainly studies the driving axle of heavy truck.calculate the basic parameters of the truck, and then use catia or ansys for 3d modeling.

the basic contents of the study are as follows:

1. selection and analysis of the structure scheme of driving axles;

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   3. 研究计划与安排

   Serial number	Time node	Task
   1	Before March 12th	The elimination of the selection of students who are not in conformity with the system
   2	Before March 25th	Upload thesis proposal
   3	Before May 25th	Student uploading stage results
   4	Before May 31th	Upload final graduation thesis
   5	Before June 8th	make open reply and decide on work points
   6	Before June 13th	Release graduation design results
   7	Before June 25th	Recommending excellent thesis

   4. 参考文献（12篇以上）

   reference

   [1]nicholas atanasov and evan chenoweth.pneumatically shifted air suspension loading for improved fuel economy benefits[j].sae international journal of engines.2015-09-29.

   [2]christopher engel, brian filippini, sona slocum and farrukh qureshi qureshi.challenging conventional wisdom by utilizing group ii base oils in fuel efficient axle oils[j].sae international journal of engines.2017-10-08.

   [3]ruifeng zhang.modeling and analysis of quasi hyperbolic gear for driving axles.construction machinery technology amp; management[j].2016-10-20.

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