• Registered: 2013-06-08
  • Posts: 2

Topic: About some warnings

Hi there,
I am working with ATENA 3D v4 to simulate the punching shear failure of two-way slabs,during the anlysis,I always got the information"(*)    Warning: Sign of diagonal changed when reducing equation: 41830, (node: 1023, dof_id: 1); value : 639.054
(*)    Warning: Loss of at least 7 digits in reducing diagonal of equation: 41836, (node: 2056, dof_id: 1); value: 5692.69
(*)    Warning: Loss of at least 7 digits in reducing diagonal of equation: 41837, (node: 2056, dof_id: 2); value: 4337.43;But the calculation is continue.I don't know why.So,I think I need your help.

Deng qing

Quote Post 1

  • dpryl
  • CC software developer
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  • Registered: 2007-07-13
  • Posts: 1,107

Re: About some warnings

Hello, please see the ATENA Troubleshooting Manual, section 2.2.6 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

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Quote Post 2