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Structural & Thermal

Structural & Thermal

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  3. How contact stiffness affects the solution runtime?

How contact stiffness affects the solution runtime?

Tagged: 18.2, contact, General, mechanical, structural-and-thermal, structural-mechanics
    • June 5, 2023 at 7:05 am
      FAQFAQ
      Participant

      Higher contact stiffness gives less penetration which in turn gives better accuracy. But higher contact stiffness is also reflected in global coefficients matrix. Higher coefficients make the matrix more ill-conditioned. A PCG solver is sensitive to the ill-conditioned matrices. Thus it will need more iterations which in turn creates longer solution time.

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