Wyniki wyszukiwania dla: MICROMORPHIC MEDIUM

• On the material symmetry group for micromorphic media with applications to granular materials

  Publikacja

  • V. Eremeev

  - MECHANICS RESEARCH COMMUNICATIONS - Rok 2018

  Within the framework of the theory of nonlinear elastic micromorphic continua we introduce the new definition of the local material symmetry group. The group consists of ordered triples of second- and third-order tensors describing such changes of a reference placement that cannot be recognized with any experiment. Using the definition we characterize the micromorphic isotropic media, micromorphic fluids, solids and special intermediate...

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• Acceleration waves in the nonlinear micromorphic continuum

  Publikacja

  • V. Eremeev
  • L. Lebedev
  • M. Cloud

  - MECHANICS RESEARCH COMMUNICATIONS - Rok 2018

  Within the framework of the nonlinear elastic theory of micromorphic continua we derive the conditions for propagation of acceleration waves. An acceleration wave, also called a wave of weak discontinuity of order two, can be treated as a propagating nonmaterial surface across which the second derivatives of the placement vector and micro-distortion tensor may undergo jump discontinuities. Here we obtain the acoustic tensor for...

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• Nonlinear strain gradient and micromorphic one-dimensional elastic continua: Comparison through strong ellipticity conditions

  Publikacja

  • V. Eremeev
  • E. Reccia

  - MECHANICS RESEARCH COMMUNICATIONS - Rok 2022

  We discuss the strong ellipticity (SE) conditions for strain gradient and micromorphic continua considering them as an enhancement of a simple nonlinearly elastic material called in the following primary material. Recently both models are widely used for description of material behavior of beam-lattice metamaterials which may possess various types of material instabilities. We analyze how a possible loss of SE results in the behavior...

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• PLANTA MEDICA

  Czasopisma

  ISSN: 0032-0943 , eISSN: 1439-0221

• Small and Medium-Sized Enterprises in Poland

  Publikacja

  • A. Surdej
  • K. Wach

  - SSRN Electronic Journal - Rok 2008

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• Medium voltage drives - challenges and requirements

  Publikacja

  • H. Abu-Rub
  • A. Lewicki
  • A. Iqbal
  • J. Guziński

  - Rok 2010

  The design and application of medium voltage (MV) drives are associated with different requirements related to the line side and motor side of the drive. This paper presents a brief review of the existing challenges and requirements for employing medium voltage drives in various industries. Line side, motor side, and converterproblems and requirements are described. The aim of the paper is to review the existing problems to allow...

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• Instant Messaging als neues kommunikationsinstrumentarium in eLearning systemen

  Publikacja

  • K. Nowicki
  • T. Uhl

  - Rok 2006

  Dokonano analizy mozliwości implementacji komunikatorów w platformach zdalnego nauczania. Przedstawiono możliwe rozwiązania. Przedyskutowano wady i zalety poszczególnych rozwiazań.

• Medium aevum

  Czasopisma

  ISSN: 0025-8385

• Laboratory tests of medium voltage switchgear isolators

  Publikacja

  • W. Chmielak
  • T. Daszczynski
  • Z. Pochanke
  • M. Wesolowski
  • R. Szreder
  • N. Obarski

  - Rok 2017

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• Medium-Voltage Drives: Challenges and existing technology

  Publikacja

  • H. Abu-Rub
  • S. Bayhan
  • S. Moinoddin
  • M. Malinowski
  • J. Guziński

  - IEEE Power Eelectronics Magazine - Rok 2016

  The article presents an overview of state-of-art solutions, advances, and design and research trends in medium-voltage (MV) drive technologies - and also discusses the challenges and requirements associated with the use of such drives. The choice and deployment of MV drives in industries are associated with numerous requirements related to the front-end converter (grid side) and inverter (machine side). The focus is on solutions...

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