• Registered: 2010-03-09
  • Posts: 26

Topic: Newton-Raphson

Hello,

In Solution Parameters, there are two solution methods to select; Newton-Raphson and Arc Length. For the Newton-Raphson, is it the combination of Full Newton-Raphson Method and Modified Newton Raphson Method ? Or only Full Newton-Raphson Method?

TQ

Quote Post 1

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

Re: Newton-Raphson

Dear Irene,
the Newton-Raphson solution method in ATENA can be set to both Full N-R and Modified N-R. For Full N-R, use tangent stiffness matrix updated in each iteration. For Modified N-R, set the stiffnes matrix to be only updated once in each load step (if you do so, it is recommended to also switch to elastic stiffness matrix).

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Quote Post 2