How can we do FEM formulation without Gauss Intergration?

31 December 2014 4,083 14 View

How small can we make a FEM mesh to so that the continuum approach still holds?

In FEM we use the continuum model of the system and mesh it to solve for the solution but what is the lower limit for the mesh so that this continuum approach still holds and at what point we...

11 December 2014 6,751 2 View

Can anybody tell me why I get differences in results when computing on a supercomputer compared to standard PC?

Yesterday, I ran a MATLAB code, which has thousands of loop and 15 subroutines to calculate per iteration and there are 100 iterations, on my computer and my department supercomputer. There was a...

09 October 2014 8,427 25 View

Can anyone suggest a Matlab Movie Making Tool?

I want to make small size high definition movie from MATLAB figure output, which updates every loop and total number of loops can be upto 1000. I have used .mpeg and .avi outputs. MATLAB produces...

08 September 2014 9,289 9 View

Does anyone have knowledge on positive/ semi-positive definite matrices?

07 August 2014 4,026 5 View

quality of matlab plots?

matlab high quality plot codes

07 August 2014 6,410 6 View

Is periodic boundary condition in homogenization theory valid?

Is using periodic boundary condition in homogenization theory at microscopic scale for identical micro-structure unit cell a good approximation or not? What are the other techniques that we can apply?

05 June 2014 9,934 5 View

Example boundary condition for thermal diffusion problem in FEM?

The 1D thermal diffusion problem is as follows: div[k grad(theta)] = ro * c * du where: ro = density, k = coefficient of thermal conduction , c = specific heat at constant deformation, du =...

31 December 2013 7,041 8 View

Structural dynamics, wave propagation, time integration schemes?

I have made a matlab code for wave propagation the problem is as follows: div[E grad(u)] = ro (d2u) E=modulus of elasticity, ro = density, d2u = acceleration. I applied two time integration...

31 December 2013 7,425 4 View

Why is it important to have a Weak Formulation for FEM?

Why is it important to have a Weak Formulation for FEM and why it does not give accurate results? What type of method and techniques are available to get accurate results using weak formulation?

09 October 2013 717 59 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

What is the characteristic length to determine the Reynolds number for the scattered turbulent fluid flow?

Dear all, I just saw this example in FB on the difference between laminar flow and turbulent flow. The flow from a pipe hits the sink and scattered. The flow from the pipe is characterized as...

02 March 2021 1,999 5 View

How to calculate BREQ 3 questionnaire?

how to calculate BEHAVIOURAL REGULATION IN EXERCISE QUESTIONNAIRE BREQ 3 ,which contain 24 questions and each question has 5 answers (0- Strongly disagree , 1-disagree, 2- Neither agree nor...

02 March 2021 811 3 View