EVALUATION OF ENERGY ABSORPTION PERFORMANCE OF STEEL SQUARE PROFILES WITH CIRCULAR DISCONTINUITIES

Authors

  • DARIUSZ SLAWOMIR SZWEDOWICZ DEPARTMENT OF MECHANICAL ENGINEERING, NATIONAL CENTER FOR RESEARCH AND TECHNOLOGICAL DEVELOPMENT, CUERNAVACA, MORELOS
  • QUIRINO ESTRADA DEPARTMENT OF MECHANICAL ENGINEERING, NATIONAL CENTER FOR RESEARCH AND TECHNOLOGICAL DEVELOPMENT, CUERNAVACA, MORELOS
  • CLAUDIA CORTES DEPARTMENT OF MECHANICAL ENGINEERING, NATIONAL CENTER FOR RESEARCH AND TECHNOLOGICAL DEVELOPMENT, CUERNAVACA, MORELOS
  • JORGE BEDOLLA DEPARTMENT OF METAL - MECHANICAL, TECHNOLOGICAL INSTITUTE OF APIZACO, TLAXCALA.
  • GABRIELA DEL SOCORRO ALVAREZ DEPARTMENT OF MECHANICAL ENGINEERING, NATIONAL CENTER FOR RESEARCH AND TECHNOLOGICAL DEVELOPMENT, CUERNAVACA, MORELOS
  • LUIS FERNANDO CASTRO DEPARTMENT OF MECHANICAL ENGINEERING, NATIONAL CENTER FOR RESEARCH AND TECHNOLOGICAL DEVELOPMENT, CUERNAVACA, MORELOS

Keywords:

THIN WALLED STRUCTURE, CIRCULAR DISCONTINUITIES, ENERGY PERFOR-MANCE, FINITE ELEMENT METHOD, EXPERIMENTAL STAND

Abstract

THIS ARTICLE DETAILS THE EXPERIMENTAL AND NUMERICAL RESULTS ON THE ENERGY ABSORPTION PERFORMANCE OF SQUARE TUBULAR PROFILE WITH CIRCULAR DISCONTINUITIES DRILLED AT LENGTHWISE IN THE STRUCTURE. A STRAIGHT PROFILE PATTERN WAS UTILIZED TO COMPARE THE ABSORPTION OF ENERGY BETWEEN THE ONES WITH DISCONTINUITIES UNDER QUASI-STATIC LOADS. THE COLLAPSE MODE AND ENERGY ABSORPTION CONDITIONS WERE MODIFIED BY CIRCULAR HOLES. THE HOLES WERE DRILLED SYMMETRICALLY IN TWO WALLS AND LOCATED IN THREE DIFFERENT POSITIONS ALONG OF PROFILE LENGTH. THE RESULTS SHOWED A BETTER PERFORMANCE ON ENERGY ABSORPTION FOR THE CIRCULAR DISCONTINUITIES LOCATED IN MIDDLE HEIGHT. WITH RESPECT TO A PROFILE WITHOUT HOLES, A MAXIMUM INCREASE OF 7% IN ENERGY ABSORPTION CAPACITY WAS OBTAINED.  ALSO, THE NUMERICAL SIMULATION CONFIRMED THAT THE IMPLEMENTATION OF CIRCULAR DISCONTINUITIES CAN REDUCE THE PEAK LOAD (PMAX) BY 10%. A PRESENT ANALYSIS HAS BEEN CONDUCTED TO COMPARE NUMERICAL RESULTS OBTAINED BY MEANS OF THE FINITE ELEMENT METHOD WITH THE EXPERIMENTAL DATA CAPTURED BY USING THE TESTING MACHINE. FINALLY THE DISCRETE MODEL OF THE TUBE WITH AND WITHOUT GEOMETRICAL DISCONTINUITIES PRESENTS VERY GOOD AGREEMENTS WITH THE EXPERIMENTAL RESULTS

Author Biographies

DARIUSZ SLAWOMIR SZWEDOWICZ, DEPARTMENT OF MECHANICAL ENGINEERING, NATIONAL CENTER FOR RESEARCH AND TECHNOLOGICAL DEVELOPMENT, CUERNAVACA, MORELOS

DEPARTMENT OF MECHANICAL ENGINEERING, PROFESSOR - RESEARCHER

QUIRINO ESTRADA, DEPARTMENT OF MECHANICAL ENGINEERING, NATIONAL CENTER FOR RESEARCH AND TECHNOLOGICAL DEVELOPMENT, CUERNAVACA, MORELOS

DEPARTMENT OF MECHANICAL ENGINEERING, PHD STUDENT

CLAUDIA CORTES, DEPARTMENT OF MECHANICAL ENGINEERING, NATIONAL CENTER FOR RESEARCH AND TECHNOLOGICAL DEVELOPMENT, CUERNAVACA, MORELOS

DEPARTMENT OF MECHANICAL ENGINEERING, PROFESSOR - RESEARCHER

JORGE BEDOLLA, DEPARTMENT OF METAL - MECHANICAL, TECHNOLOGICAL INSTITUTE OF APIZACO, TLAXCALA.

DEPARTMENT OF METAL - MECHANICAL, PROFESSOR

GABRIELA DEL SOCORRO ALVAREZ, DEPARTMENT OF MECHANICAL ENGINEERING, NATIONAL CENTER FOR RESEARCH AND TECHNOLOGICAL DEVELOPMENT, CUERNAVACA, MORELOS

DEPARTMENT OF MECHANICAL ENGINEERING, PROFESSOR - RESEARCHER

LUIS FERNANDO CASTRO, DEPARTMENT OF MECHANICAL ENGINEERING, NATIONAL CENTER FOR RESEARCH AND TECHNOLOGICAL DEVELOPMENT, CUERNAVACA, MORELOS

DEPARTMENT OF MECHANICAL ENGINEERING, PHD STUDENT

Published

2014-07-05

Issue

Section

Articles