齿轮接触安定分析  

SHAKEDOWN ANALYSIS OF GEAR CONTACT

作　　者：原园[1] 徐颖强[1] 吕国志[1] 

机构地区：[1]西北工业大学航空学院,西安710072

出　　处：《机械强度》2007年第6期1017-1021,共5页Journal of Mechanical Strength

基　　金：国家自然科学基金(10672134);航空科学基金(01C53012)资助项目~~

摘　　要：以Hertz理论为基础,建立齿轮的接触模型。针对齿轮接触表面层变曲率的特点,构造出局部坐标下残余应力应变场的分布状态,分析在此残余应力场分布状态下,齿轮接触的静力安定和机动安定的条件。采用应力应变释放的算法和不同啮合点局部坐标之间的转换法则,模拟齿轮在重复啮合过程中残余应力应变的累积过程,求解安定状态下残余应力的分布状况,确定齿轮接触的安定极限与摩擦因数和齿轮啮合位置之间的变化情况。A model of gear contact has been established based on Hertz theory. Local coordinates are constructed on different meshing points because curvature of gear profile is not constant and then distributions of residual stresses and strains are given. Upper and lower bounds for the shakedown limits have been obtained. An approximate algorithm based on a stress invariant hypothesis and a stress/strain relaxation procedure is developed to solve residual stresses and strains accumulation in elastic-plastic stress analysis of gear contact. The steady-state residual stresses of gear under repeat meshing are calculated and relations between shakedown limits and frictional coefficient/meshing position are given. The results are useful information for the strength design of gear.

关 键 词：齿轮 安定 接触 残余应力 

分 类 号：V232.8[航空宇航科学与技术—航空宇航推进理论与工程] O343.2[理学—固体力学]