How should 2x2 twills be modeled in an Abaqus FEM simulation of Lamb waves in a composite plate?

In order to investigate Lamb waves in a carbon-fiber composite plate (size: 0.5m x0.5m), which comprises unidirectional, biaxial and twill layers, I homogenized the 3D properties of each layer....

11 December 2019 7,817 1 View

In Abaqus, is it possible to remove some elements from a sequence obtained by getByBoundingBox() ?

Basically, I tried to do the following: >>> p1 = p.edges.getByBoundingBox(-1,-1,-1,1,1,1) >>> p2 = p.edges.getByBoundingBox(-0.26,-0.26,-1,0.26,0.26,1) >>> pickededges...

09 October 2019 8,517 3 View

When does Abaqus use the Total Lagrangian and when the Updated Lagrangian formulation?

Total and Updated Lagrangian formulations are generally available for both the implicit and nonlinear explicit dynamic analysis. But when is which applied? Does Abaqus mix them?

03 April 2017 935 7 View

What changes in Abaqus/Standart(Implicit) when chosing transient/moderate dissipation or quasi-staic?

Abaqus implicit dynamic analysis offers the user 4 choices of application: - default - transient fidelity - quasi-static - moderate dissipation Do these use different implicit integrators or...

02 March 2017 4,486 2 View

How can I increase the precision in an Abaqus explicit dynamic analysis?

How can I get a better resolution so I can better determine where buckling starts? It seems Abaqus automatically determines the number of increments. What does the number of increments depend on?

01 January 1970 5,488 5 View

How can an SS4 boundary condition be implemented on a cylinder in Abaqus?

I am trying to define boundary condition in a cylindrical coordinate system in Abaqus. I have to implement an SS4 boundary condition defined as: 1. displacements: u (axial) = v (circumferential) =...

01 January 1970 3,905 1 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