EngiRef / Materials Engineering Formula
Miner's Rule (Cumulative Damage)
Miner's Rule (Cumulative Damage): Linear damage accumulation rule. A Fatigue formula in materials engineering. Variables nᵢ and Nᵢ, each with SI and imperial…
Fatigue
Specification
- Name
- Miner's Rule (Cumulative Damage)
- Discipline
- materials
- Category
- Fatigue
- LaTeX
- \sum \frac{n_i}{N_i} = 1
- Description
- Linear damage accumulation rule
- Conditions
- Order-independent; assumes no interaction effects
- Can solve for
- nᵢ, Nᵢ
- Tags
- miner, cumulative, damage, fatigue, rule
Variables
| Symbol | Name | Unit | Si Unit |
|---|---|---|---|
| nᵢ | Cycles at Stress Level i | - | - |
| Nᵢ | Cycles to Failure at Level i | - | - |
Common questions
- What is the Miner's Rule (Cumulative Damage) formula?
- Linear damage accumulation rule. It sits under Fatigue, Materials engineering in the EngiRef reference.
- What do the symbols in the Miner's Rule (Cumulative Damage) formula mean?
- In Miner's Rule (Cumulative Damage), nᵢ is cycles at stress level i; Nᵢ is cycles to failure at level i.
- When does the Miner's Rule (Cumulative Damage) formula apply?
- Miner's Rule (Cumulative Damage) holds under this condition: Order-independent; assumes no interaction effects.