A_curved_beam_with_eccentricity_0.02D_is_loaded_with_1kN.Centroidal_radius=4D_and_inner_and_outer_radii_are_3.5D_and_4.5D_respectively._Area_of_cross_section_is_0.8D¬¨¬®‚Äö√¢¬ß._Find_the_dimension_D_if_allowable_stress_is_110N/mm¬¨¬®‚Äö√¢¬ß_and_considering_combined_effect_of_direct_stress_and_bending_stress.$#

A_curved_beam_with_eccentricity_0.02D_is_loaded_with_1kN.Centroidal_ra

1.	A_curved_beam_with_eccentricity_0.02D_is_loaded_with_1kN.Centroidal_radius=4D_and_inner_and_outer_radii_are_3.5D_and_4.5D_respectively._Area_of_cross_section_is_0.8D¬¨¬®‚Äö√¢¬ß._Find_the_dimension_D_if_allowable_stress_is_110N/mm¬¨¬®‚Äö√¢¬ß_and_considering_combined_effect_of_direct_stress_and_bending_stress.$#
A.	15.8mm
B.	14.35mm
C.	17.9mm
D.	18.1mm
Answer» C. 17.9mm

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Residual stresses are always added in the load stresses and hence are always harmful.
All type of stresses vanishes after as soon as the applied load is removed.

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