基于能量释放率准则的齿轮断裂可靠性分析  

Reliability Analysis for the Gear Fracture based on Energy Release Rate Criterion

作　　者：宋平[1] 宋非非[2] 

机构地区：[1]浙江建设职业技术学院,浙江杭州311231 [2]长春建筑学院,吉林长春130699

出　　处：《机械传动》2015年第7期165-166,186,共3页Journal of Mechanical Transmission

摘　　要：基于能量释放率准则,提出了含裂纹齿轮断裂可靠性分析模型。首先,从能量角度出发,推导了含裂纹齿轮能量释放率的表达式,然后将影响齿轮断裂的材料参数、裂纹尺寸、载荷等视为随机变量,以能量释放率为准则,建立含裂纹结构失效的功能函数,并通过一次二阶矩法和随机有限元法求解出可靠度。算例表明,本方法有较高的精度和计算效率。Based on energy release rate criterion, a reliability analysis model is presented for the gear fracture. Firstly, the formula of gear fracture energy release rate is deduced, then the material parameter, crack size, load which affecting on gear fracture are regarded as random variables. The performance function of the crack structure failure is built by taking advantage of the energy release rate criterion. The first - order second - moment method and stochastic finite element method are used to calculate the reliability. The computation re- sults show that this suggested method has advantages of high accuracy and efficiency.

关 键 词：可靠性 裂纹 断裂 能量释放率 一次二阶矩法 

分 类 号：TH132.41[机械工程—机械制造及自动化]