CorBlimey,
Thanks for the reply. I found out that a Jamnut is basically a low profile hexnut which could be used to lock a second nut in place thus acting like a surface/ plate. I have used these terms interchangeably myself and was curious if there were differences. You explained the lock nut...
Hi:
I am doing a thermal and stress analysis for laser deposition using commercial software. My thermal analysis has convection, conduction, and radiation and no contact and gives temperature as output for the analysis. I use the temperature as load for my stress analysis where the mechanical...
We have available a large volume of cured rubber shavings and clippings as a result of our manufacturing process. We were wondering if there is perhaps a twin screw type extruder that could mulch this rubber and perhaps have a low pressure chamber extension so that the end result is lower...
Our company makes rubber mats. Recently we were approached by a company that claims to make pellets of devulcanized rubber from scrap tire rubber. We were able to get the product to calendar and cure in some of our trial runs but would like to test their claim to understand the constituents and...
We have an open celled - fibrous PU foam product that we would like to stiffen by using a spray coat/ dip coat or some such process. We envision using this final product for structural applications by perhaps overlaying a stiff pad or grid post coating. Any ideas on what we should be looking at...
Dear All:
I tried to run a sequential thermal and stress analysis by element activation technique. I have no issues running my thermal model but have trouble in mechanical model. When I run my mechanical model, the first element-set that gets activated has no convergence problem but when I...
A part of Message file:
CONVERGENCE CHECKS FOR EQUILIBRIUM ITERATION 3
AVERAGE FORCE 3.03 TIME AVG. FORCE 2.78
LARGEST RESIDUAL FORCE -7.78 AT NODE 19854 DOF 1
INSTANCE: PART-1-1...
Hi mrgoldthorpe:
I am unable to understand what you want me to do. I just followed your advise and typed in *Controls, Analysis=discontinous; for all the steps. I thought as my material yield strength decreased with temperature, so I gave 10e11Pa when the temperature goes beyond 1873K(liquidus...
Hi:
I have been trying to simulate residual stress in my mechanical model for laser scanning by importing the thermal data from Heat transfer model into the mechanical model. I have used commmercial FEA codes. My inital model is at 300K and on applying laser heat flux on the activated set of...
Hi:
I am trying to model residual stress as a result of temperature change using linear isotropic hardening equation.
1. I used USDFLD to calculate young's modulus (as FIELD(1)), poisson ratio (as FIELD(2)) as a function of temperature
2. I calculated the corresponding yield stress (FIELD(3))...
Hi:
I am trying to study phase transformations in LENS process (laser deposition). I have used HETVAL subroutine and it works fine and calculates phase fractions. But the flux(1)=internal heat generated = conductivity matrix+specific heat matrix.
Q = [k]T*+[c]T (HETVAL...
