Does anyone have any data regarding compression set values for Melinex 378 and Kapton 100 HN films? (i.e. the percentage permanent deformation that occurs under a sustained load).
I know, its a long shot ...
Is it possible to determine a value for Young's modulus from a material's storage modulus?
I believe the storage modulus is determined from a dynamic test. I have a static application I wish to consider but only have storage modulus info for the material.
Peterson's Stress Concentration Factors gives lots of useful data for various geometric discontinuities under loading. But how do I treat a situation with multiple load cases? For example a shouldered shaft with a fillet radius under an axial and torsional load.Peterson's has seperate factors...
Is the strength of a cold worked or age hardened material likely to change with time?
I believe if a component strengthened by either of the two above mechanisms is exposed to increased temperatures during operation then the strength would change, but does it also change over time if the...
If I have a stepped shaft, that is, a shaft that changes from one diameter to a smaller diameter along its length; subject to an axial load and torsional load, how do I address the problem of stress concentrations at the step?
Having calculated the nominal direct and shear stress values at the...
Yes, I believe this to be true too. I've looked at two stress cases one when tightening the bolt where I calculate torsional stress and axial stress ( with stress raisers applied to both )and determine the von mises stress.Here the axial stress is due to the preload and the torsional stress due...
Is is realistic to apply both an axial and torsional stress concentration factor to bolt stresses? I'm looking at the head to shaft fillet radius and the threads themselves. I get very high predicted stress values ! Am I doing something wrong or am I being very pessimistic?
