Stephen.
I support your change of plans.
Please proceed to prepare the project proposal.
Ernesto
________________________________________
From: huses@rpi.edu [huses@rpi.edu]
Sent: Friday, August 29, 2014 1:34 PM
To: Gutierrez-Miravete, Ernesto
Cc: Lemcoff, Norberto
Subject: Re: potential topic for Master's project
I agree with you that the topic is probably too involved. I
read though
the current theory on fracture mechanics that you gave me and
other
sources I found, and determined that the theory is doable, but
the
application will be difficult in the time allowed. I am not
familiar
with ANSYS or Franc3d, and am not very familiar with ABAQUS
analysis of
crack propagation (though ABAQUS does have the ability to
calculate J
integrals and K factors.
Therefore, I have decided to not pursue the topic of crack
growth
analysis. Instead, I will be looking into thermal ratcheting,
which I
have more experience with. Attached is a brief summary of my
idea.
Stephen
==============Original message text===============
On Thu, 28 Aug 2014 9:28:00 EDT "Gutierrez-Miravete, Ernesto"
wrote:
Hello Stephen.
It is a good topic but you may well have to scale it down a bit
to make completion feasible in the limited time available.
Perhaps focusing on crack propagation under hoop stress due
to pressure would be more than enough.
Also, how will you the crack propagation part
is unclear and you must look more into this.
Please begin preparing the proposal.
Ernesto
________________________________________
From: huses@rpi.edu [huses@rpi.edu]
Sent: Thursday, August 28, 2014 9:24 AM
To: Gutierrez-Miravete, Ernesto
Cc: stephenhuse@gmail.com
Subject: potential topic for Master's project
Professor,
Attached is my potential project topic. Also, I do not
regularly check
my rpi email, so please send correspondence or cc my personal
email:
stephenhuse@gmail.com
Thanks,
Stephen
Stephen Huse, Fall 2014, Master’s Project
Potential topic:
The potential topic for my Master’s project is thermal ratcheting analysis of a pipe tee for
combination loadings of pressure, moment, and thermal discontinuity. Because this
topic is work related, the loading conditions will not be any specific environment, but
various assumed conditions. The project would involve the use of numerical methods
with finite element software to dynamically analyze the number of cycles to failure for
thermal ratcheting. The project would include an initial simplified pipe model before
adding more complex geometry. The effects of reduced integration elements and
convergence studies can be included as well as important assumptions. The
preference for analysis software is ABAQUS with help as desired from preprocessor
software, HYPERMESH, for geometry creation. The project will provide sufficient
description of the ABAQUS input file sections to enable readers to create a thermal
ratcheting input file for ABAQUS.
References:
1. Dassault Systèmes Program: ABAQUS
2. Altair Program : Hyperworks
3. 2010 ASME Boiler & Pressure Vessel Code, Section III, Division 1 – Subsection
NB-3222.5, “Rules for Construction of Nuclear Facility Components”
4. 2010 ASME Boiler & Pressure Vessel Code, Section III, Division 2 – Alternative
Rules, Subsection 5.5.6 and 5.5.7
5. The Extension and Verification of the Bree Diagram, D.N. Moreton, H.W. Ng,
Journal: Transactions of the International Conference on Structural Mechanics in
Reactor Technology, Issue 10/2, (1981)
6. The Bree problem with primary load cycling in-phase with the secondary load,
R.A.W. Bradford
7. Shakedown and limit analysis of 90 pipe bends under internal pressure, cyclic inplane bending and cyclic thermal loading; Haofeng Chen*, James Ure, Tianbai
Li, Weihang Chen, Donald Mackenzie