April 2019
Intermediate to advanced
528 pages
14h 4m
English
Content preview from Analysis and Design of Machine Elements
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2 Strength of Machine Elements
Nomenclature
- b
- cylinder length, mm
- E
- elastic modulus, MPa
- F
- force, N
- K A
- service factor, or application factor
- K σ
- combined influence factor
- k f
- fatigue stress concentration factor
- k t
- geometric stress concentration factor
- k σ
- fatigue stress concentration factor in tension
- k τ
- fatigue stress concentration factor in shear
- m
- material constant
- N
- number of load cycles
- N 0
- critical number of cycles
- N v
- equivalent number of cycles
- q
- notch sensitivity factor
- r
- stress ratio
- S
- safety factor
- S ca
- calculated safety factor
- [S]
- allowable safety factor
- β q
- intensify factor
- β σ
- surface condition factor for tension
- ε σ
- size factor for tension
- μ
- Poisson's ratio
- ρ
- radius of curvature, mm
- σ
- tensile stress, MPa
- σ −1
- endurance limit of a material at r = −1, MPa
- σ −1e
- endurance limit of an element at r = −1, MPa
- σ −1Nv
- endurance strength at r = −1 and N = N v , MPa
- σ 0
- endurance limit at r = 0, MPa
- σ 1,2,3
- principal stresses, MPa
- σ a
- stress amplitude, MPa
- σ b
- ultimate, or tensile strength, MPa
- σ ca
- calculated tensile stress, MPa
- σ e
- equivalent stress, MPa
- σ lim
- material strength, MPa
- σ m
- mean stress, MPa
- σ max
- maximum stress, MPa
- σ min
- minimum stress, MPa
- σ r
- endurance limit at stress ratio r, MPa
- σ rN
- endurance strength at r and N, MPa
- σ r∞
- endurance limit, ...
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