<p>This paper presents a mixed finite element framework utilizing a saddle-point formulation to address parabolic biharmonic integro-differential problems of the Kirchhoff type with simply supported boundary conditions. The paper demonstrates the well-posedness of the scheme and offers stability and error estimates for both semi-discrete and fully discrete finite element schemes. Additionally, a rectangle quadrature rule is employed to approximate the memory integral term. Numerical experiments are conducted to validate the theoretical estimates and to showcase the scheme’s effectiveness in non-convex domains.</p>

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An efficient mixed FEM for time-dependent Kirchhoff type integro-differential equations

  • Damini Gupta,
  • Avijit Das,
  • Mausumi Sen

摘要

This paper presents a mixed finite element framework utilizing a saddle-point formulation to address parabolic biharmonic integro-differential problems of the Kirchhoff type with simply supported boundary conditions. The paper demonstrates the well-posedness of the scheme and offers stability and error estimates for both semi-discrete and fully discrete finite element schemes. Additionally, a rectangle quadrature rule is employed to approximate the memory integral term. Numerical experiments are conducted to validate the theoretical estimates and to showcase the scheme’s effectiveness in non-convex domains.