Evaluación de las Propiedades Dinámicas de un Pórtico Plano (MDOF) en una Mesa Vibratoria / Evaluation Of The Dynamic Properties Of a 2d-frame (MDOF) In a Shake Table

Translated title of the contribution: Evaluation of the dynamic properties of a flat porch (MDOF) on a vibrating table / evaluation of the dynamic properties of a 2d-frame (mDOF) in a Shake Table

Andrea Stephanie Tapia Andrade, Wilson Ramiro Torres Berni

Research output: Contribution to journalArticle

Abstract

At present, the study of structural dynamics is mainly theoretical with access to certain simulations through software, however, this project attempts that the student may understand and physically observe the dynamic responses of experimental models. These models correspond to 2D - frames with multiple degrees of freedom that are subjected to acceleration in the base; this acceleration is generated by a Shake Table II, and the results obtained will be compared with theoretical results. These theoretical results were obtained based on modal decomposition and New-mark's method for calculating the dynamic response, considering the linear variation in the acceleration of each floor. The application developed, ATH Dynamic Responses, provided the theoretical responses through a graphical interface friendly for the user. The experimental models are constituted by two materials: stainless steel for frame legs and acrylic sheets for floors; these were tested on a Shake Table II". The data was acquired using accelerometers that were placed in each floor and in the shake table, and they were corrected both by baseline and with the low pass filter. The results obtained show that the instrumentation with the Shake Table II and the data acquisition with accelerometers provide results similar to the theoretical ones regarding dynamic responses and modal properties
Translated title of the contributionEvaluation of the dynamic properties of a flat porch (MDOF) on a vibrating table / evaluation of the dynamic properties of a 2d-frame (mDOF) in a Shake Table
Original languageSpanish (Ecuador)
Pages (from-to)49-62
JournalIngenius: Revista De Ciencia Y Tecnología
Volume26
Issue number2021
DOIs
StatePublished - 1 Jul 2021

Keywords

  • Descomposición modal
  • Dinámica estructural
  • Filtro.
  • Mesa vibratoria
  • Modelo experimental
  • Newmark

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