surface roughness

In this paper, we investigate the surface roughness-dependence of buckling of beam-nanostructures. A new variational formulation of buckling of Euler-Bernoulli rough beams is developed based on the Hamil- ton’s principle. The equation of motion of the beam is obtained with a coupling term that depends on the beam surface roughness. Exact solutions are derived for the buckling configurations and the pre-buckling and postbuckling vibrations of simply supported structures.

The effect of crystal size and initial dislocation density on surface roughness evolution in FCC single crystals during the early number of cycles of mechanical cyclic loading is investigated using three dimensional discrete dislocation dynamics simulations. Crystals having size less than 2 μm show early development of surface slip localization, while larger ones show a more uniform distribution of surface steps. The surface roughness is found to increase with increasing number of loading cycles with larger crystals showing a high roughening rate compared to smaller crystals.

Hi all Metal cutting experts...



I have done done 2D finite element metal cutting simulation and validated with experimental force value. as we know.. from 2D FEM simulation, we can get only force data, stress-strain, temperature and somehow chip morphology. Can anyone kindly tell me how will this 2D simulation help me to link with surface roughness of the machined surface.



I will be  very gratefull to you all....

thanks in advance...



regards...

Borad

India

Although there are many uses for Fiberglass reinforcement, in most applications it is crucial that they are as strong as possible. Fiberglass composites have one of the highest strength to weight ratios available and in some cases, pound for pound it is stronger than steel. It is also important to have as little of exposed surface area as possible. Increased surface can make them more vulnerable to chemical attack and possibly material expansion.