电子测试
電子測試
전자측시
ELECTRONIC TEST
2014年
9期
156-158
,共3页
户志宇%张博利%吴卓%苏毅%刘佳鹏
戶誌宇%張博利%吳卓%囌毅%劉佳鵬
호지우%장박리%오탁%소의%류가붕
齿轮泵传动轴%疲劳断裂%失效分析
齒輪泵傳動軸%疲勞斷裂%失效分析
치륜빙전동축%피로단렬%실효분석
gear pump drive shaft%fatigue fracture%failure analysis
某车间齿轮油泵传动轴在距轴肩约8mm处发生断裂，经分析断裂类型属疲劳脆性断裂，由于装配等原因使表面局部产生划痕等擦伤，划痕处存在一定的应力集中，在长期周期性转矩作用下形成初始裂纹，并不断发生扩展，当裂纹扩展到一定尺寸，传动轴的剩余部分不足以承受载荷的作用，最终发生断裂。
某車間齒輪油泵傳動軸在距軸肩約8mm處髮生斷裂，經分析斷裂類型屬疲勞脆性斷裂，由于裝配等原因使錶麵跼部產生劃痕等抆傷，劃痕處存在一定的應力集中，在長期週期性轉矩作用下形成初始裂紋，併不斷髮生擴展，噹裂紋擴展到一定呎吋，傳動軸的剩餘部分不足以承受載荷的作用，最終髮生斷裂。
모차간치륜유빙전동축재거축견약8mm처발생단렬，경분석단렬류형속피로취성단렬，유우장배등원인사표면국부산생화흔등찰상，화흔처존재일정적응력집중，재장기주기성전구작용하형성초시렬문，병불단발생확전，당렬문확전도일정척촌，전동축적잉여부분불족이승수재하적작용，최종발생단렬。
Gear oil pump drive shaft in a workshop ruptured at about 8mm from the shaft,and fracture types are fatigue fracture of brittle. Due to assembling surface scratches abrasions were formed.A concentration of stress existed in the scratches,and the initial fatigue crack propagated under long-term periodic torque action and continued expansion.When the crack reached a certain size,beyond the load of the drive shaft can withstand,the fracture occurred.
