mcgrete's blog

Hello,

 I understand from word of mouth, as well as an extensive study/Master'sThesis (http://publications.lib.chalmers.se/records/fulltext/164269.pdf), that Abaqus XFEM formulation works, but that processing of results to obtain reported SIF (KI, KII, KIII, not sure about J, others) are in error due to apparent bugs in Abaqus's algorithm to calculate the SIFs.

Hello,

I have a multiple part question:

Backgroud to Q#1& Q#2  My interest is in the full stress distribution through the cross section of a helical coil compression spring, including the effects of curvature that are often cited by Wahl, but reported only for maximum stress at the surface.  The coil is simple - constant wire diameter, coil diameter, and pitch.  I have been unable to come across the solution for the full stress distribution (analytical), although there are endless references to Wahl's correction factor for the maximum stress.