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Dear FEA way, I used the interface between umat and vumat of Britta Bienen but the model was not working. Very thanks if you can help me an example using vumat complete. Best regards Hoang An

Dear all, I use umat from the website https://soilmodels.com/constmodels/. Now I want to use vumat to perform dynamic analysis. Have you ever used umat to vumat conversion for me to simulate? I am a new user of abaqus so it is difficult to write the program. We hope to help. thank you many...

Dear all, There are 2 blocks of A and B. Block A is subject to dynamic loads according to the history of time. Block B stands still. I want to declare the contact surface of blocks A and B with great friction to show its dependence on this coefficient. So what function do I need to use because...

Dear all, I am looking for vumat fortran of sandy soil material. Các bạn đã từng sử dụng có thể cho tôi ví dụ tham khảo. Many Thanks. Hoang An

Thank you, FEA way

Dear Cách FEA , Can you please send me the .inp file. thank you.

Dear all, This is the input parameter of the material: *Material, name=Material-2 *Density 7800., *Elastic 2.1e+11, 0.3 *Material, name=soil *Damping, beta=0.00628319 *Density 2000., *Drucker Prager 40.,1.,5. *Drucker Prager Hardening 50000., 0. 75000., 0.001 150000., 0.002 216000., 0.1...

Dear all, I am simulating vibration roller moving on sandy soil. In abaqus, the attenuation coefficient of Rayleigh alpha and beta is reduced, this coefficient only changes the velocity in the x (V1) and the y (V2) directions. I am using a Drucker-Prager soil model. Dynamic / explicit analysis...

dear all, Thank you very much if you give me the .cae file or filming for reference.

Dear all, This is the file I created it for the error. "Infinite elements must share a complete face with one and only one other non-infinite element. The elements in element set ErrElemInfiniteAdjacency are not properly connected." Can you help me know this error? Many thank...

Do you have example soil model for my reference. thanks

The material I added damping factor: alpha and beta Rayleigh, only works for velocity results V1 (x), V2 (y). If so, what additional parameters do I need in the material to determine the velocity reduction V3 (z). Many thanks,

this is the model i use spring.

I model soil by Drucker prager.

dear all, I am simulating moving rollers with dynamic loads both in harmony. Results: (1) at position 5m, 20m velocity in the z direction is the same. (2) when adding alpha, beta damping coefficient, the x, y velocity changes; velocity in the z-direction remains constant (1). I am looking for...

dear all I am conducting wave analysis in the ground. 1/ Abaqus required with dynamic analysis using SpringA.can help me example create SRINGA in analysis like? 2/ Example of dashpots coefficient. Many thanks, Hoang An

Dear all I am looking for a model of sandy clay soil that declares the information according to drucker-prager. Can you introduce similar models. Many thanks.

dear Erik Panos Kostson and Murdye3, when I use load * amplitude then the subroutine does not error. The problem lies in the declaration of the amplitude. many thanks

Dear all, I am new in ABAQUS. I try to simulate the motion load with the time history using the Vload subroutine. Effect load = 260KN, moving in x direction with velocity = 0.5 m / s, vibration frequency 40Hz. I write for example in abaqus: subroutine vdload ( ! Read only...