Simulation of temperature differences in melt pool
Hi everyone can anyone help me with the simulation of temperate differences in melt pool during laser additive manufacturing? I am confused as to how to start the project.
Blog posts
Linear form
These notes are part of my notes on linear algebra. I believe that textbooks of linear algebra give a bad definition of linear form. The last section of the notes explain why it is bad. I also give examples of linear form everyday life and from physics. Given the vector space of distance, both force and electric field are dual spaces of the space of distance. They are distict dual spaces of the space of distance, and they are not dual spaces to each other.
Large strain viscoelasticity - help with CETOL?
I am having problems with large strain viscoelasticity, where I am using Prony series to model the visco part. There is no default for the parameter CETOL, nevertheless, by reducing this tolerance or reducing the time step I am getting results that make no sense.
Can someone help me check my VUMAT code for Neo-Hookean material?
Hi,
I am new to writing VUMAT. I tested my Neo-Hookean hyperelastic material and the build-in Abaqus material on single element model but got quite different results. Can anyone take a look at my code and let me know if there is anything wrong?
Finite Eigenstrains in Nonlinear Elastic Wedges
Eigenstrains are created as a result of anelastic effects such as defects, temperature changes, bulk growth, etc., and strongly affect the overall response of solids. In this paper, we study the residual stress and deformation fields of an incompressible, isotropic, infinite wedge due to a circumferentially-symmetric distribution of finite eigenstrains. In particular, we establish explicit exact solutions for the residual stresses and deformation of a neo-Hookean wedge containing a symmetric inclusion with finite radial and circumferential eigenstrains.
assembly
Hi friends;
I want to assemble three volumes with different properties in apdl ansys, but ansys ignore CMGRP command when I use it, what's problem my code? How can I assemble three volumes? please help me.
my code is:
/PREP7
~PARAIN,'Geom','x_t','.\DESKTOP\',SOLIDS,0,0
ET,1,solid186
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,EX,1,,3.013
MPDAtA,PRXY,1,,0.3
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDAtA,DENS,1,,1.092
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,EX,2,,1.65
MPDAtA,PRXY,2,,0.3
MPTEMP,,,,,,,,
2016 EMI International Conference - MS11: Instabilities and Bifurcations in Solids, Structures and Soft Materials
Dear Colleagues,
Remarks on UMAT for plane stress problem
There are a lot of sample UMAT subroutines for plane strain or 3D problems. However, it is difficult to find an example for the plane stress problem online. Even the UMAT manual does not provide enough information. I have tried the UMAT subroutine for the plane stress problem for a while. The following remarks may be useful for collegues who have interest.
1. The stress components σ11, σ22, σ12 should be returned to UMAT. The other three stress components equal to zero, known as the basic assumption of the plane stress problem.
Postdoctoral Position in Mechanics
Employment as an assistant researcher (Post-doc) at the project OPUS from National Centre of Science.
uel mass diffusion/heat transfer
hi all,
I am a PhD student .for my research I must ecire a uel to visualize the distribution of moisture in the composite polyester / fiberglass exposed to two different temperatures on both sides with abaqus.
any help is appriciessed