Axisymmetric Analysis of Long Thin Cylinder
Axisymmetric Analysis of Long Thin Cylinder
(OP)
I am currently doing an axisymmetric analysis of a very large bolted flange connected to a long thin cylinder.
Does anybody in the group know the formulae to find the distance at which the effect of an axisymmetric shear or moment at the end of the cylinder dies away?
In the fea model, I can discontinue the long cylinder at this distance from the joint without any significant effect on the stresses at the joint.
Regards,
Juan Garcia BSc(Hons) Ceng MIMechE DipEM
Pipetech Design & Construction (UK) Ltd.
Engineering Director
Does anybody in the group know the formulae to find the distance at which the effect of an axisymmetric shear or moment at the end of the cylinder dies away?
In the fea model, I can discontinue the long cylinder at this distance from the joint without any significant effect on the stresses at the joint.
Regards,
Juan Garcia BSc(Hons) Ceng MIMechE DipEM
Pipetech Design & Construction (UK) Ltd.
Engineering Director





RE: Axisymmetric Analysis of Long Thin Cylinder
In the site below you find many calculation sheets for thin cylinders under various loadings and restraints.
prex
motori@xcalcsREMOVE.com
http://www.xcalcs.com
Online tools for structural design
RE: Axisymmetric Analysis of Long Thin Cylinder
exp(-1.285*x/sqrt(r*t)), where
exp(x) = e^x; (e=2.71828...)
x = distance along cylinder
r = cylinder radius
t = cylinder thickness
This information comes from eq. 4.5.5 in Theory and Design of Pressure Vessels, 2nd Ed., by John F. Harvey.
RE: Axisymmetric Analysis of Long Thin Cylinder
Besides, please have a look in the books of Bednar or Farr (or in Timoshenkos´s Theory of Plates and Shells).