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Unformatted text preview: 2. Material = homogeneous; stresses within elastic range 3. Section shouldnt be too close to stress raisers Solid Round Bar max = 32Md3 4.6 Pure Bending Loading, Curved Beams Strain on a fiber: = ( + ) yd rn y Strain on an elastic material: = ( + ) Eyd rn y Curved Beams: = i McieAri = -0 Mc0eAr0 = i KiMcI = KiMZ = -= -i K0McI K0MZ 4.7 Transverse Shear Loading in Beams = = = VIby y0y cydA Thin Walled: = max 2VA Round: = max 43VA Rectangle: = max 32VA 4.10 Stress Equations Related to Mohrs Circle , = + + (-) 1 2 x y2 xy2 x y2 2 = ( -); = + +-; = +(-2 arctan 2xyx y 1 22 1 22cos2 max xy2 x ) y2 2 =-( ) 1 22sin 2 4.12 Stress Concentration Factors, K t = ; = max Ktnom max Ktnom 4.16 Thermal Stresses = T-; -; - strain coefficient of thermal expansion T temperature change...
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This note was uploaded on 03/02/2010 for the course MECH 530 taught by Professor Ramesh during the Spring '10 term at Johns Hopkins.
- Spring '10