What manufacturing restrictions still exist today for laminates?

Many publications use discrete angles and layer thickness for laminates. Is that outdated?

31 December 2018 546 3 View

Where can I find a direct comparison of PML and ABCs like Enquist Majda applied to acoustic benchmarks problems based on finite element models?

Many applications in numerical acoustics occur in exterior domains. The advantage of benchmark problems is a closed form solution (e.g. circumferentially harmonic radiation from an infinite...

08 September 2018 9,301 4 View

What can be defined with the Ansys command RLBLOCK ?

RLBLOCK, 11, 11, 6, 7 (2i8,6g16.9) (7g16.9) 1 6 0.100000000E-02 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 2 6...

02 March 2018 9,571 1 View

History of inertia relief analysis ?

I am looking for the first publication on inertia relief analysis.

09 October 2017 4,490 0 View

Is there anyone who can share a 3D CAD model of a rod fastening rotor ?

I am looking for a three-dimensional CAD model of a rod fastening rotor. Iges or step format would be appreciated.

09 October 2016 2,481 3 View

What is the major reason to use beam elements instead of shell elements for the stiffeners in stiffened panels?

Finite element models of stiffened panels currently consists of shell elements for the panel and beam elements for the stiffeners. For what reason ?

03 April 2016 9,269 13 View

Who can share a finite element model of a composite shell structure ?

I am looking for an Abaqus input file (*.inp) that contains the following keywords *Shell Section, Composite *Static or *Frequency

11 December 2015 8,571 0 View

Can anyone shed some light on the definion of CPYRA elements in NX-NASTRAN ?

It is not clear to me how CPYRA elements with a varying number of midnodes are handled.

02 March 2015 5,970 3 View

Can anyone share a NASTRAN op2 file that contains an OUGV2 displacement output table in SORT2 ?

A NASTRAN OUGV2 displacement table is needed in SORT2 format.

02 March 2015 9,391 3 View

How can I find a symmetric positive definite matrix by a rank one modification of an indefinite matrix ?

Let A be a real symmetric indefinite matrix. A is perturbed by a rank-one modification, i.e. B = A + \alpha \diag{c_i}. How can I compute the scalar \alpha such that B is real symmetric positive...

08 September 2014 8,280 0 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