Open AccessMotion analysis of furniture under seismic excitation using the finite element method
Author(s) -
Isobe Daigoro,
Yamashita Takuzo,
Tagawa Hiroyuki,
Kaneko Mika,
Takahashi Toru,
Motoyui Shojiro
Publication year - 2018
Publication title -
japan architectural review
Language(s) - English
Resource type - Journals
ISSN - 2475-8876
DOI - 10.1002/2475-8876.1015
Subject(s) - earthquake shaking table , finite element method , shake , structural engineering , displacement (psychology) , code (set theory) , motion (physics) , table (database) , computer science , engineering , ground motion , excitation , mechanical engineering , artificial intelligence , data mining , psychology , electrical engineering , set (abstract data type) , psychotherapist , programming language
Improperly secured furniture, especially on the upper floors of high‐rise buildings under long‐period ground motion, can prove dangerous to human life. Fallen items of furniture such as chairs and desks could become fatal obstacles that prevent efficient evacuation. In this research, an effective numerical code for analyzing the motion of furniture subjected to seismic excitations was developed. The numerical code is based on the adaptively shifted integration — Gauss technique, which is a finite element scheme that provides higher computational efficiency than the conventional code. The frictional contact between objects was fully considered by employing a sophisticated penalty method. Various excitation tests of furniture were conducted on a shake‐table. In the experiments, steel cabinets were excited by seismic waves and displacement data were recorded by a motion capture system. The numerical results were validated through a comparison with the shake‐table test results.