software

Dear all,

I'm doing a dynamic analysis and optimization of high speed railway bridges. After developing the abaqus input file (*inp), the following errors have occured and I was unable to solve them. I have attached a picture showing the node number that I used to model the train. the car body and the bogies are model as a rigid body in which nodes 6001,6004 and 6501 are the reference nodes. 

1. An overconstraint problem. it says "Zero pivot when processing Node 6004 d.o.f 2, node 6004 d.o.f 6 and node 6001 d.o.f 6

Hello everyone.. Consider a cantilever for sequential load steps in abaqus.

Fist step I want to apply imposed displacement of 2mm at free end.

2nd step I want impose +/-6mm Z displacement at free end (total 3

cycles. (One cycle= +6 and -6 mm in z direction)



Can somebody let me know how to do this. how to define two steps ?

Thank you in advance

Vasant

Dear colleagues,

I have one question concerning the TSHR (transverse shear stresses) output request in application of Thick Shell S8R elements in Abaqus/standard. 

the follow qarning occurs:  Output request tshr is not available when *transverse shear stiffness is specified on the *shell section definition or a material in the shell has been defined without *elastic

 Can anybody please help with an advioce or two, on how to solve this?

all the best

You should access the abaqus results (*.fil) file via MATLAB.
In order to take your results into a fil file you should specify *FILE FORMAT, ASCII along with *EL FILE and/or *NODE FILE, etc. options in your abaqus input file (assuming that you run Abaqus/Standard).

After creating the results fil file, go to section 5.1.2 of the Abaqus Analysis User's Manual to find details about how to read the fil file. You can use this information to read this file using MATLAB.

Hey,

 I am writing a python script for modeling aggregates in a concrete cylinder. I have created a all the particles and and specified section properties to them and to the  cylinder.

The procedure I am using is to merge the particles and the cylinder while retaining the boundaries. If the sctions are assigned to the parts before merging, the result is the cylinder with the specified section assignmentsfor each part.

I wrote the code in python but seems like it does not include the section assignment to the new part from merge.

I am trying to model ply dropoffs of composite materials ,because I am working on a contact problem of bolted joint,so I choose continuum shell rather than shell ,but it seems that the ply thickness will change at a ply dropoff region. Does anyone knows how to solve this problem?

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