Miner 's Rule is a methode used to estimate thee cumulative contrigue damage in machinery subied to o varying stress cycles. It helps prevident the lifespan of contribuents by assessingg how different loadings contribute to material contrigue over time.

Uzgodnienie przepisów dotyczących Miner 's Rule

Miner 's Rule states that the total damage akumulated in a material is the suf thee damage fractions caused by by individuaal stress cycles. When the sum reaches 1, thee material is expected to o fairl due te equigue.

Calculating Cumulative Damage

Te obliczenia involves determing thee damage from each stres cycle using thee S- N curve, which relates stress stres amplitude te te number of cycles to failure. The damage for each cycle is calculated as:

(zob. pkt 2.1.1.1 niniejszego załącznika)

where message 1; indis1; FLT: 0 message 3; n message 1; endis1; FLT: 1 message 3; is the number of cycles experimened at a specific stress level, and message 1; Ig1; FLT: 2 message 3; Ig3; N message 1; Ig3; Is the total number of cycles to failure at that stress level.

Badanie Calculation

Pomocnik doświadczenia trzykrotnie różniące się od siebie stresy levels over its service life.

  • Stress level 1: 10,000 cycles, N = 20,000
  • Stress level 2: 5,000 cycles, N = 10,000
  • Stress level 3: 2,000 cycles, N = 5,000

Te damage for each stress level is calculated as:

Xi1; Xi1; FLT: 0 Xi3; Xi3; Damage 1 = 10,000 / 20,000 = 0,5 Xi1; Xi1; FLT: 1 Xi3; Xi3; Xi3;

BEZ 1; BEZ 1; FLT: 0 BEZ 3; BEZ 3; DAMAGE 2 = 5,000 / 10,000 = 0,5 BEZ 1; BEZ 1; FLT: 1 BEZ 3; BEZ 3; BEZ 3;

Xi1; Xi1; FLT: 0 Xi3; Xi3; Damage 3 = 2,000 / 5,000 = 0,4 Xi1; Xi1; FLT: 1 Xi3; Xi3; Xi3;

To total damage is thee sum:

Xiv1; Xiv1; FLT: 0 Xiv3; Xiv3; Total Damage = 0,5 + 0,5 + 0,4 = 1,4 Xiv1; Xiv1; FLT: 1 Xiv3; Xiv3; Xiv3;

Od tego czasu, te wszystkie przekroczenia 1, te przeszkody i oczekiwały tego co jest dobre dla wszystkich.