A new hybrid energy absorption mechanism subjected to axial loading

作     者：BAHMAN Paygozar MOHAMMAD ALI Saeimi Sadigh BAHMAN Paygozar;MOHAMMAD ALI Saeimi Sadigh

作者机构：Department of Mechanical EngineeringTED UniversityAnkaraTurkey Department of Mechanical EngineeringAzarbaijan Shahid Madani UniversityTabrizIran 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2020年第27卷第1期

页      码：76-87页

摘      要：This study aims to introduce a novel hybrid design with a combination of two more common mechanisms for improving the capacity of systems in absorbing the kinetic energy of moving vehicles or devices. This new model consists of two individual mechanisms, i.e., expansion of a circular tube accompanied by crushing of an inner tube, which dissipate the energy through friction, plastic deformations and failures of inner tube. This study comprises 24 case studies surveyed under two different design controls, constant mass and constant volume, for comparing purposes. Finite element simulations are utilized so as to investigate models’ deformations and to extract some crashworthiness parameters in aid of representing the efficiency of the mechanism as well as conducting a parametric study between three different profiles of inner tube. This study shows that models with inner circular and hexagonal tube profile absorb higher amount of energy due to experiencing three different modes of energy dissipation systems, including folding, shear and ductile damages.

主 题 词：energy absorption specific energy hybrid mechanism finite element 

学科分类：082304[082304] 08[工学] 080204[080204] 0802[工学-机械学] 0823[工学-农业工程类] 

核心收录：

D　O　I：10.1007/s11771-020-4279-0

馆 藏 号：203878810...