Dipaloke Majumder

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Questions related from Dipaloke Majumder

How to solve Abaqus error 'FORCE EQUILIBRIUM NOT ACHIEVED WITHIN TOLERANCE' ?

I am trying to do elasto-plastic analyse of a plane strain tunnel section. The model is running up to step 2 properly. Then, I am trying to propagate the model to stpe 3 (initial attempt: without...

09 September 2019 7,167 3 View

How to apply large number of concentrated forces with different magnitude on different nodes in Abaqus?

I am trying to model excavation procedure of tunnel (D-shaped) in Abaqus (CAE). I have obtained the RF1 and RF2 from an independent analysis as given in Abaqus example (Abaqus example problem...

08 August 2019 9,341 7 View

How to model strain-softening behavior of concrete/rock mass in Abaqus ?

I am trying to model the strain-softening behavior of rock mass using UMAT subroutine. And, I am applying the 'static Riks method'. My model is running fine in abaqus under small loading. However,...

05 May 2019 8,141 7 View

How to use FORTRAN modules within UMAT subroutine in ABAQUS?

I have three modules (in free form .f90 format) which are being called from inside of a UMAT subroutine in ABAQUS, in the following manner: module module_A use module_C use module_B .... end...

11 November 2018 7,635 7 View

How to solve excessive distortion of corner element in elasto-plastic analysis in ABAQUS?

I am trying to model a deep tunnel in rock mass in ABAQUS. I am using an elastic-plastic UMAT model. In that model, pressures are applied from top horizontal surface and vertical right surface....

05 May 2018 2,162 8 View

How to consider large deformation and finite strain when using UMAT subroutine in ABAQUS?

I am modelling a tunnel in rock using ABAQUS. Material non-linearity has been considered by using a UMAT subroutine. Now, I want to consider large deformation and finite strain in this analysis....

10 October 2017 6,821 4 View