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Hi, I am modeling in 2D condition in plane strain. If i insert Plane stress/strain thickness in ABAQUS equal to 0.01, what is that mean? my units in my model are : meter, newton, kg, second, Pa. i am using CPE4P element.

HI how to use a different coordinate system in one common point without having this error:"following attributes are applied to overlapping, intersecting, or adjoining regions in differing coordinate systems: BC-1(BC), BC-2(BC), BC-3(BC), BC-4(BC), BC-5(BC) the input file was not generated" the...

Hi, I am using map solution technique in my model. I ran my model and then I did below steps: 1- I obtained orphan mesh in the last increment from the previous job 2- Change orphan mesh into the new part 3- Assign materials and boundary condition 4- Mesh it My question is, I am using amplitude...

Hi, I want to change the friction angle with the plastic strain in Abaqus following mohr coulomb model. Vermeer and de Borst (1984) proposed an equation for frictional hardening and I want to use that. In their equation, the shear hardening parameter obtains from below equation and then the...

Hi, I want to use USDFLD subroutine in my model. I want to use maximum principal plastic strain(MAX.principal) with respect friction angle. how i call MAX.principal? Another question which i have is about maximum magnitude between PE11 and PE22. If i want to maximum plastic strain between PE11...

Hi everyone I am using mohr-coulomb plasticity in my model. In this plasticity model , PEEQ defiend as a formula in below picture. I cant understanding that. Can anybody explain it for me?

Hi I am using ALE technique and umeshmotion code in my model for simulate sand production. My model run very well and finaly my job completed, but in visualization module , I cant see mesh moving.Do I need insert something in my model for seeing mesh moving?

Hi Is it possible to calculate volume of elements which are plasticized? In my model plastic zone are garadually increased until run is completed. I want create curve variation of vloume of platic zone in respect of time. Is it possible?

Hi My geometry of model is a square with a hole in center of it. Because of symmetry i am modeling a quarter of geometric. my problem is that, when i model whole model my deformation in top of hole is about 8.5 mm, but when i model a quarter of model whit same loading, my deformation in top of...

Hi I want to change cohesion yield stress via PEEQ in mohr coulomb plasticity; Hence, I use USDFLD subroutine. but I don't know how remove abs plastic. I think abs plastic is different from PEEQ. so should I fill abs plasic strain with 0?? (like below picture)

Hi everyone, is it possible to exhort bilinear mohr-coulomb in abaqus? the picture of bilinear mohr-coulom is like this:

HI Does a formula exist which we can calculate incrementation of PEEQ until reaching a limit of PEEQ which I want? Does a formula exist which we can calculate cohesion and friction angle corresponding to PEEQ? ( I have initial values of friction angle and cohesion) I want to determine values...

Hi i want to extract two-dimensional profiles and remeshing using abaqus. i found out its necessary to use command line such as PartFromOdb, but i don't know how to use this command in my own model. can everyone help me in this problem with an example? in following pictures there are some...

Hi i am modeling sand production in well-bore and i have some question about "erosion equation" i look to erosion equation was proposed by Papamichos and Malmanger (2001) (the picture of this equation is displayed at the end of this thread) The unit of erosion velocity is (m/s). Do you know...

Hi i am using abaqus standard and i want use deletion element technique for solving distortion problem. in my model i use mohr-coulomb plasticity with tension cut-off. is it necessary to use subroutine for this purpose? if it is necessary, which subroutine will be needed? is it able to modify...

Hi I am modeling a well-bore with axisymmetric model. In geostatic step my model aborted. i check material property and they are correct. in geostatic step, in section of edit load, amplitude are instantaneous. what can i do for solving this problem?

Hi everyone i am using USDFLD subrotuine in abaqus and i define DEPVAR and USER DEFIEND FIELD in material property and use this code(write(6,*) '!!! USDFLD subroutine CALLED !!!' ) in end of my subroutine to know usdfld used or not . i found my subrotuine not called in abaqus. please help me...

Hi i have a Stress-strain curve from experimental results. i want to model this experiment with abaqus but i don't know how exert load in models to reach this curve, Do i use experiment stress-strain curve for exert loads in boundaries? picture of axial stress and radial stress and axial...

Hi everyone i wrote a USDFLD subroutine in abaqus and i want to see is it correct or not? my friction angle and dilation angle varying with plastic strain(PEEQ) subroutine usdfld(field,statev,pnewdt,direct,t,celent, 1 time,dtime,cmname,orname,nfield,nstatv,noel,npt,layer, 2...