You are not logged in. Please login or register.

Forum updated

We have recently updated our forums system, and we have cleared all spam topics and users. In case we accidentally deleted your account, please register again. If you miss a topic you have posted before, please let us know.

Post new reply

Post new reply

Compose and post your new reply

You may use: BBCode Smilies

All fields with bold label must be completed before the form is submitted.

Required information for guests

Required information

Topic review (newest first)


Dear mhaider, please read section "2.2.5 Floating point problems - Division by zero, Loss of >7 digits on the matrix diagonal, Floating point exception: Multiple floating points traps, Zero or negative jacobian, InvertA: zero determinant, CCMaterials Extended AExc: CC5ParamYield F: project_stress_on_f_division by zero, and similar" of the ATENA Troublehooting Manual.



I am using ATENA3Dv4 for modelling multicylinder wellbore. I have given input of my pressure load in 36 load steps. After running for 12 steps i.e at 13 th  step solution killed by an error as - "CCFEModelExc: Negative or zero value of element Jacobian: -1.36298e-006, in element id: 138, group id: 410517506, name: Quadratic Tetra elements(1937) for Macroelement 2".

Can you please advise me on this ?