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This post was created in order to obtain some feedback for the publication mentioned. If there is a problem with this I can delete it of course.

A new optimization concept is introduced which involves the gradient-based optimization of any nonlinear structure by using gradients calculated from a linear equivalent, leading thus to significant computational savings compared to the classical Newton-type optimization algorithms which require...

Dear Mcakir, You can try to extract these results from the corresponding fil files (if you do not have them already, then unfortunately you have to rerun the analyses in Abaqus by appropriate modifications of the input files). Check the Abaqus2Matlab toolbox for more information. A new version...

Hello Biomech_Max, I ran the input file input_error.inp in my workstation and everything went ok. It seems that the culprit is in the Python script that you use for the generation and execution of the input file. Instead of submitting the job directly, you can firstly write the input file by...

Rigid bodies have infinite stiffness terms for the degrees of freedom which are attached to the rigid body and move with it and zero stiffness terms between the degrees of freedom moving with the body and the stationary degrees of freedom (fixed to the ground). Best regards, George...

If the velocity pulse is provided as a function of time and your model is linear, then it would be more economical to perform response spectrum analysis. In this analysis: (1) You convert the velocity pulse from the time domain to the frequency domain using standard procedures which produce the...

Try the following code section instead of the one you have posted above. misesPM = frame.FieldOutput(name='MisesPM', description='VonMisesPM', type=SCALAR) elData = [] for v in S.values: if abs(v.maxPrincipal)<abs(v.minPrincipal): elData.append([v.mises]) else...

See the following example on how to automate the process: r.D_1= 79.3927; r.D_2= 141.8463; r.D_3= -126.6688; r.D_4= 167.2028; r.D_5= 547.2340; r.D_6= 10.5369; r.D_1_2= 98.8763; r.D_1_3= -140.9858; r.D_1_4= 95.0552; r.D_1_5= 458.3821; r.D_1_6= -48.7647; r.D_2_3= -107.6000; r.D_2_4= 170.8630...

Have you specified any displacement boundary conditions in your model? If yes, check that the center of the disk is fixed. Apart from this, you have to specify the displacement magnitude in Abaqus/Viewer to appear as a result, and not displacement U1, U2, or U3. Best regards, George...

Provided that no material or geometric nonlinearities exist, the buckling load is a function of only the axial load of a member, and not any lateral load. This results from the definition of the geometric stiffness matrix. George Papazafeiropoulos

You mean that in future versions of Abaqus there will be no option for writing output in such files?

zwtipp05, the option you propose is another alternative, indeed. However in case one is not acquainted with Python, or cannot use it for various reasons, or is a beginner in Python (but much more familiar with Matlab), this toolbox offers another possibility to extract results from Abaqus to...

Dear all, A new submission has been made which aims to provide a link between Abaqus and Matlab. The submission has the form of a new toolbox (a zip file containing Matlab code, Abaqus code, and the relevant applications and examples). It occurs very often, that researchers have to resort to...

Dear all, A new submission has been made which aims to provide a link between Abaqus and Matlab. The submission has the form of a new toolbox (a zip file containing Matlab code, Abaqus code, and the relevant applications and examples). It occurs very often, that researchers have to resort to...

Dear all, A new submission has been made which aims to provide a link between Abaqus and Matlab. The submission has the form of a new toolbox (a zip file containing Matlab code, Abaqus code, and the relevant applications and examples). It occurs very often, that researchers have to resort to...

See this thread Best regards, _______________________________________________ George Papazafeiropoulos First Lieutenant, Infrastructure Engineer, Hellenic Air Force Civil Engineer, M.Sc., Ph.D. candidate, NTUA Email: gpapazafeiropoulos@yahoo.gr Website: http://users.ntua.gr/gpapazaf/

There may be a very large contact acceleration correction that was applied a few increments prior to termination. Do the following: (1) Decrease the velocity of impact (2) Change the density of the material(s) where the error occurs (3) Change the modulus of elasticity of the material(s) where...

In the Interaction module, edit the Constraint-1 of coupling type, and respecify the control point. This point cannot belong to the wheel surface. To specify this point, you must select a point from the rail, or create a point where the wheel and the rail come in contact through partitioning...

Look at section 31.2.1 Connector behavior, of the Abaqus Analysis User's manual, as well as the *connector stop option in Abaqus Keywords reference manual. You can define connector elements in the Interaction module of Abaqus CAE. Regards, _______________________________________________ George...

Dear atedionyahoo, Take a look at the section named "vibration and acoustic quantities" in 4.2.1. of the ABAQUS Analysis User's Manual. Unfortunaltely these results are not written to the .dat file. The particle acceleration can be evaluated by appropriate differentiation of the particle...