航空学报 > 1988, Vol. 9 Issue (9): 430-433

P-S-N曲线试验方案的统计模拟研究

谢里阳, 徐灏   

  1. 东北工学院
  • 收稿日期:1987-08-18 修回日期:1900-01-01 出版日期:1988-09-25 发布日期:1988-09-25

STATISTICAL SIMULATION STUDY ON THE TEST PROGRAM OF P-S-N CURVE

Xie Liyang, Xu Hao   

  1. Northeast University of Technology
  • Received:1987-08-18 Revised:1900-01-01 Online:1988-09-25 Published:1988-09-25

摘要: 本文应用蒙特卡洛方法模拟测定材料P-S-N曲线的疲劳试验,确定丁做P-S-N曲线的最佳试验方案。节省大量试验时间和试样。

Abstract: P-S-N curve is a basis of reliability design and analysis. It will require a lot of time and samples to determine a group of P-S-N curve. So how to design the test program becomes a practical problem. Using Monte Carlo method, this paper simulated fatigue test for determining P-S-N curve and the number of stress levels as well as the sample number under each stress level. Therefore the optimum test program is given. The conclusion is that compared with commonly used four-stress level or five-stress level tests the proper three-stress level or four-high-stress level test can greatly reduce test time as well as samples, and at the same time reach the same accuracy when determining P-S-N curve.