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urkabil's blog

Nastran SuperElement

Submitted by urkabil on

I would like to use condensation to calculate the normal modes of
a structure. These grids are connected to the structure through RBE3 (master
grid). Let me know if there's a way to use the master grids of RBE3 elements in
the A-SET?

the error form the f06  

*** USER FATAL MESSAGE 2101 (GP4)

GRID
POINT    1000005 COMPONENT  1 ILLEGALLY DEFINED IN SETS  
UM   UC 

FEA

Submitted by urkabil on

Using Abaqus, hanging some mass in Truss element (T3D2), facing numerical singularities and lack of convergence due to Truss elements have no initial stiffness to resist loading perpendicular to their axis. If a stress-free line of trusses is loaded perpendicular to its axis in Abaqus/Standard. Kindly suggest me how to overcome this. 

FEA of Crack Propagation

Submitted by urkabil on

Hi all,I'm a student of of Madras Institute of Technology, Chennai.I'm trying to do stress intensity based crack propagation in metals. I’m using Abaqus/CAE. I’m following the abaqus 6.5 documentation, I have completed upto “Contour integral evaluation,” (Section 7.10.2). but I’m unable to proceed further, since “Crack propagation analysis”, (Section 7.10.3) refers only “Input file usage” (Not Abaqus/CAE Usage)I hope someone can help me