ESTIMATION OF STRUCTURAL STIFFNESS WITH THE USE OF PARTICLE SWARM OPTIMIZATION

MICHAŁ MAZUR; MAREK A. GALEWSKI; KRZYSZTOF KALIŃSKI

doi:10.1590/1679-78256400

ESTIMATION OF STRUCTURAL STIFFNESS WITH THE USE OF PARTICLE SWARM OPTIMIZATION

Authors

MICHAŁ MAZUR GDAŃSK UNIVERSITY OF TECHNOLOGY, FACULTY OF MECHANICAL ENGINEERING AND SHIP TECHNOLOGY, GDAŃSK, POLAND HTTPS://ORCID.ORG/0000-0003-1405-909X
MAREK A. GALEWSKI GDAŃSK UNIVERSITY OF TECHNOLOGY, FACULTY OF MECHANICAL ENGINEERING AND SHIP TECHNOLOGY, GDAŃSK, POLAND HTTPS://ORCID.ORG/0000-0003-3703-4012
KRZYSZTOF KALIŃSKI GDAŃSK UNIVERSITY OF TECHNOLOGY, FACULTY OF MECHANICAL ENGINEERING AND SHIP TECHNOLOGY, GDAŃSK, POLAND HTTPS://ORCID.ORG/0000-0003-1658-4605

DOI:

https://doi.org/10.1590/1679-78256400

Abstract

THE PAPER PRESENTS THE THEORETICAL BACKGROUND AND FOUR APPLICATIONS EXAMPLES OF THE NEW METHOD FOR THE ESTIMATION OF SUPPORT STIFFNESS COEFFICIENTS OF THE COMPLEX STRUCTURES MODELLED DISCRETELY (E.G. WITH THE USE OF THE FINITE ELEMENT MODEL (FEM) METHOD) BASED ON THE MODIFIED PARTICLE SWARM OPTIMIZATION (PSO) ALGORITHM. IN REAL-LIFE CASES, EXACT VALUES OF THE SUPPORTS’ STIFFNESS COEFFICIENTS MAY CHANGE FOR VARIOUS REASONS (E.G. ORDER OF FASTENING, STATE OF THE CONTACT SURFACES, ENVIRONMENT CHANGES, ETC.). BECAUSE OF THE UNKNOWN COEFFICIENTS, RELIABLE SIMULATIONS OF FIXED STRUCTURE (I.E. MOUNTED, ASSEMBLED, NOT IN A FREE-FREE STATE) ARE DIFFICULT TO PERFORM. THE METHOD SERVES AS A TOOL TO OBTAIN GOOD CORRELATION BETWEEN THE FEM OF A STRUCTURE AND THE EXPERIMENTAL DATA. SIMPLE MODAL TESTS ARE REQUIRED TO ESTIMATE THE FIRST FEW MODES OF THE FIXED SYSTEM. THE FEM OF THE STRUCTURE IS CONSIDERED IN A FREE-FREE STATE AND THE SUPPORT STIFFNESS COEFFICIENTS OF THE FEM ARE ESTIMATED BY THE PROPOSED METHOD. FURTHER SIMULATIONS WITH TEST-TUNED AND CORRELATED COMPLETE FEM COULD BE PERFORMED IN TIME OR FREQUENCY DOMAIN.

Downloads

Published

2021-02-05

Issue

Vol. 18 No. 2 (2021)

Section

Articles

License

Authors who publish with this journal agree to the following terms:

Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License [CC BY] that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).