Error: negative jacobians detected.

[nicole-ortiz]

Dear FEBio developer,
I am encountering an issue while running a simulation in FEBio2.8.1. The following error messages appear:

• Warning: K should

...

[Franzi]

Hello,
I am trying to get the following input file to run, but the rigid body won't move in step2. What am I doing wrong?
About the example:...

[Alan_Conway_Chen]

Hello,

I encountered a "Negative jacobian was detected" problem while running the solver. The goal is to simulate the deformation...

[ggv]

Hello, I am trying to complete a task assigned to me on FEBio, but I’m having some problems. I need to simulate the compression of articular cartilage...

[Rouyang8]

Hello there, I have been trying to do a load test on a femur bone, not sure what I did wrong, I keep trying to change step size and time steps, but this...

[achitsaz]

Hello,
I spent three months working on a project involving the mechanical analysis of arterial walls in aneurysm regions using FEBio. I obtained...

[tomisinajayi]

Hello,

I am having trouble running my structural mechanics model. It keeps giving me this domain initialization error and also lists specific...

[subratamondal]

Hi FEBio Developers,
I am trying to run a simulation but I am getting a negative jacobian error. Previously, I had faced the same problem with my...

[subratamondal]

Hi FEBio Developers,
I am trying to run a simulation but I am getting a negative jacobian error.
Description of my model:
1.Development...

[trilochan.tadi]

Hi,

I need help with this error I am getting on my model. I am using the angioFE plugin, and version 1.61. I am attaching the model underneath....

[bluefog21]

Hello,

I'm aware that choice of solver is very dependent on the problem at hand, but I was curious to find out whether there is a recommended...

[connor]

Hello community,

I am running a few different contact problems where I run sliding elastic contacts and tied contacts.
I have success...

[YIDAN]

Hi,

I'm trying to troubleshoot my model, which has convergence problems. According to the User's manual, I tried to add "-g"...

[car207]

EDIT: I was having an issue with inflating an artery to simulate a balloon angioplasty. The pressure load was giving me Negative Jacobians with any amount...

[Alexey_Orlov]

I have modelled a geometry with 4 layers: Epidermis, Dermis, Fat and Muscle.
All tissues were assumed to behave as viscoelastic solids. The hyperelastic...