Hello,
If i know the yield stress,ultimate stress, and modules of elasticity.can i predict the behavior of stress strain in the plastic region using some kind of model.?
Thank you
A new scientific journal, Mathematics and Mechanics of Complex Systems (MEMOCS) [http://msp.org/memocs/], has been launched this winter. You may view the first edition at http://msp.org/memocs/2013/1-1/index.xhtml. MEMOCS is a very unique publication in several ways: a
nonprofit publication owned, managed, and supported by academic
institutions from countries all over the world. Because it is supported
by these sponsoring institutions, subscription fees and page charges are
not necessary, and electronic access to the publication is open
and free to all. Accepted manuscripts are published free of charge
I am solving a simple solid mechanics problem by meshless method. use RPIM to calculate shape function.
when i calculate the derivatives of shape function, i found the derivative is not close to zero at the compute point, when the point is on the boundry of problem domain. and good derivative result can be got if the compute point is in problem domain.
is there anybody has experience in working with RPIM shape function help me to fix the problem?
Hi guys,
This is my first post in this forum; hope you can guide me through
two issues
My first question is all about geometry of blind bolt, especially
the sleeve; I already try two ways to simulate the sleeve
First I try to create upper cylinder and the lower part and
rotate the lower parts and merge them, but this create problems in meshing and create gaps between the two parts as illustrated
in the following picture
Hi All
Hope all are doing well. Suppose I have a specimen and I want to find out the Johnson-Cook material model parameters (A, B, C, m, n). Can any one tell me how can I proceed? Experimental or Numerical simulation??
Thanks in advance
Hi all,
I am working on Abaqus 6.8. I am doing a pile loading
analysis in dense sand. I am not understanding how to plot
load-displacement plot by using static general step. I mean where i
should assign reaction forces and displacement in output request. i have
assigned a set at middle of pile and requested for disp. in output
request also i have made a set of bottom which is fixed and ask for
reation force in output request. i summed up all reaction forces and
combine with displacement. but i am getting zero force and graph becomes
Hello Everyone,
I am a new member of imechanica. I have started to learn UMAT of Abaqus to model my material behavior ( Cu6Sn5, HCP) using crystal plasticity finite element model. I found Dr. Huang's single crystal UMAT to start learning UMAT and I thought that it would be a great guide to start though it is written for FCC mat. But unfortunately I was not able to run the UMAT with it's input file.
Dear all iMechanicians ,
Since several days I am trying to simulate a granular material very similar to sand. The uniaxial compression test performed to the material shows a nonlinear elasticity behavior during the unloading curve.
The goal is to fully reproduce the behavior of the material with a nonlinear elastic model when the material stress-state is inside the yield surface and the plastic behavior with a multilinear isotropic hardening law. The yield surface would be given by the Drucker-Prager-Cap criterion.
