点蚀和剥落对齿轮扭转啮合浩刚度影响的研究-机械设计与理论专业毕业论文.pdf.docxVIP

太原理：【大学硕士研究生学位论文THE 太原理：【大学硕士研究生学位论文 THE RESEARCH ON THE EFFECT 0F PITTING AND SPALLING ON THE TORSIoNAL MESH STIFFNESS 0F GEAR AB STRACT The gear is the most widely applying part in mechanical drive，which is also pronest to fault．At present，the driving gearing is developing along miniaturized，high—speed，standardizing direction and high speed，heavy load， low noise and high reliability have been become modem gear development direction，which has brought forward higher request to gear drive characteristic property．The meshing transmission error of the gear is one of the main caHses which creates noise and vibration of the gear power transmission system．The change of the gear torsional mesh stiffness intensifies the gear transmission error, specially when the gear included the flaw,in the situation its torsional mesh stiffness to reduce，therefore caused the noise and the vibration of the system is bigger．Studying the torsional mesh stiffness of the gear has a more profound significance，to understand the causes of the transmission error of the gear and the noise of the system and diagnose the gear fault． It is the important prerequisite to establish 3一D finite element model for the 太原理工大学硕士研究生学位论文right 太原理工大学硕士研究生学位论文 right finite element analysis．In this papeg using the APDL commands of ANSYS，using the bottom—up modeling way and using mapping and freedom of integration established the 3-D with／without defective accuracy model． Calculated the gear torsional mesh sti ffness must analyze the contact question．This paper presents the contact question study on several issues of methods and its range of application，which is very important significance to analyze the gear contact stress．The gear must be carried out the correct loading during the period of analyzing the 3D gear contact model．It has key effects on correct solution whether boundary conditions and loading location are correct． According to the definition of torsional mesh stiffness，the 3D contact models for defect—