Search results for: LINEAR OPERATOR THEORY

• Advances in Operator Theory

  Journals

  ISSN: 2538-225X

• JOURNAL OF OPERATOR THEORY

  Journals

  ISSN: 0379-4024 , eISSN: 1841-7744

• Complex Analysis and Operator Theory

  Journals

  ISSN: 1661-8254 , eISSN: 1661-8262

• INTEGRAL EQUATIONS AND OPERATOR THEORY

  Journals

  ISSN: 0378-620X , eISSN: 1420-8989

• A non-linear direct peridynamics plate theory

  Publication

  • K. Naumenko
  • V. Eremeev

  - COMPOSITE STRUCTURES - Year 2022

  In this paper a direct non-local peridynamics theory for thin plates is developed. Peridynamic points are assumed to behave like rigid bodies with independent translation and finite rotation degrees of freedom. The non-local mechanical interaction between points is characterized by force and moment vectors. The balance equations including the linear momentum, the angular momentum and the energy are presented. Peridynamic deformation...

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• On constitutive relations in the resultatnt non-linear theory of shells

  Publication

  • S. Burzyński
  • J. Chróścielewski
  • K. Daszkiewicz
  • W. Pietraszkiewicz
  • A. Sabik
  • B. Sobczyk
  • W. Witkowski

  - Year 2016

  The authors summarize their current research in the field of constitutive modelling in the framework of non-linear 6-parameter shell theory. In particular the description of isotropic, multilayered composite and functionally graded shells is presented.

• The ONETEP linear-scaling density functional theory program

  Publication

  • J. C. A. Prentice
  • J. Aarons
  • J. C. Womack
  • A. E. A. Allen
  • L. Andrinopoulos
  • L. Anton
  • R. A. Bell
  • A. Bhandari
  • G. A. Bramley
  • R. J. Charlton... and 26 others

  - JOURNAL OF CHEMICAL PHYSICS - Year 2020

  We present an overview of the ONETEP program for linear-scaling density functional theory (DFT) calculations with large basis set (planewave) accuracy on parallel computers. The DFT energy is computed from the density matrix, which is constructed from spatially localized orbitals we call Non-orthogonal Generalized Wannier Functions (NGWFs), expressed in terms of periodic sinc (psinc) functions. During the calculation, both the...

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• Optimal linear control theory in power system application

  Publication

  • A. Swarcewicz
  • K. Wróblewska-Swarcewicz

  - IEEE Computer Applications in Power - Year 2002

  Przedstawiono syntezę stabilizatora systemowego przy wykorzystaniu metodyki Hinf. Zaprojektowany regulator umożliwia uzyskanie lepszych rezultatów w porównaniu z regulatorem odniesienia w szerokim zakresie zmian punktu pracy.

• On shear correction factors in the non-linear theory of elastic shells

  Publication

  • J. Chróścielewski
  • W. Pietraszkiewicz
  • W. Witkowski

  - INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES - Year 2010

  W pracy wyprowadzono analitycznie wartości korekcyjnych współczynników ścinania dla ścinania poprzecznego oraz dla momentów owinięcia w ramach nieliniowej sześcioparametrowej teorii powłok. Wartości wyprowadzono poprzez odpowiednie sformułowanie komplementarnej energii sprężystej. Na drodze analizy przy pomocy MES, badano wpływ wartości współczynników na położenie punktów bifurkacji, deformacje, całkowitą energię sprężystą układu...

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• Exact resultant equilibrium conditions in the non-linear theory of branching and self-intersecting shells

  Publication

  • V. Konopińska-Zmysłowska
  • W. Pietraszkiewicz

  - INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES - Year 2007

  We formulate the exact, resultant equilibrium conditions for the non-linear theory of branching and self-intersecting shells. The conditions are derived by performing direct through-the-thickness integration in the global equilibrium conditions of continuum mechanics. At each regular internal and boundary point of the base surface our exact, local equilibrium equations and dynamic boundary conditions are equivalent, as expected,...

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