Similarity index: A procedure for comparing impact time histories validated with soft impact test

Alonso, J. and Parra Hidalgo, José Antonio and Pacios, A. and Huerta Gómez de Merodio, María Consuelo (2019). Similarity index: A procedure for comparing impact time histories validated with soft impact test. "Engineering Structures", v. 198 ; pp. 1-10. ISSN 0141-0296. https://doi.org/10.1016/j.engstruct.2019.109513.

Description

Title: Similarity index: A procedure for comparing impact time histories validated with soft impact test
Author/s:
  • Alonso, J.
  • Parra Hidalgo, José Antonio
  • Pacios, A.
  • Huerta Gómez de Merodio, María Consuelo
Item Type: Article
Título de Revista/Publicación: Engineering Structures
Date: August 2019
ISSN: 0141-0296
Volume: 198
Subjects:
Freetext Keywords: Impact force; Similarity index; Glass testing; 2DOF
Faculty: E.T.S.I. Industriales (UPM)
Department: Ingeniería Mecánica
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

This paper describes the procedure developed to compare the dynamic behavior of a structure due to an impact load. The comparison procedure is especially useful for controlling the impact level and repeatability during testing, but it can also be used for fine-tuning the process of simplified models or finite element models. Both features provide important engineering value and permit the assessment of transient impact histories, qualitatively and quantitatively. More than 240 soft impacts, from a human impact against glass test campaign, have been used to develop and validate the comparison method. Three indicators have been defined in order to control the most significant impact parameters: the impact level (impulse), duration of the impact (stiffness), and maximum acceleration (peak system response). Based on the knowledge of the impact phenomena, the procedure defines a Similarity Index (SIn) that entails the weighted addition of the indicators. The SIn procedure assigns a numerical value to the difference between two time histories over the duration of the contact, and it is used to compare a series of data from a database of soft human impacts tests versus standard glass curves and curves obtained from a simplified 2DOF model.

More information

Item ID: 67538
DC Identifier: https://oa.upm.es/67538/
OAI Identifier: oai:oa.upm.es:67538
DOI: 10.1016/j.engstruct.2019.109513
Official URL: https://www.sciencedirect.com/science/article/pii/S0141029618324660?via%3Dihub
Deposited by: Memoria Investigacion
Deposited on: 30 Jun 2021 14:25
Last Modified: 01 Sep 2021 22:30
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