How can one model the moving mass in Sap 2000 on the bridge or beam?

09 October 2014 6,234 5 View

How can I calculate the the response of ground soil with Matlab?

I want to calculate the response of soil from acceleration in bed rock with matlab. I programming this with Matlab, in linear manner and attached. I want to programming with equal linear and...

07 August 2014 7,088 4 View

How can I model the chimney in Abaqus?

I have a model of tall concrete chimney in Abaqus but it has error. I try to correct it but not possible. also I want to meshed it like attached picture. Can anyone help me? My analyses is...

05 June 2014 3,248 9 View

Has anyone calculated system identification with FRF?

I calculated FFT of response and force with Matlab code. And then I divided FFT response to FFT force and calculated FRF. This is for sdof. But I don't have true results.

31 December 2013 7,473 13 View

What is the Matlab code to calculate response for a nonlinear system single degree of freedom with hysteresis curve?

Matlab code.

31 December 2013 4,936 23 View

How to calculate FRF in MATLAB?

I have two signals (response and force) and I want to calculate FRF in MATLAB. And I must calculate it with FFT. but I resulted not good.

31 December 2013 2,771 12 View

Is wavelet transfer a good method for system identification?

The system identification with wavelet method uses response of system against force. Which force is acceptable?

31 December 2013 5,841 6 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 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

MD MOE RMSD

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

07 August 2021 0 0 View

MGL tools

20 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

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

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View