Numerical and theoretical analysis of honeycomb structure filled with circular aluminum tubes subjected to axial compression

2019 ◽  
Vol 165 ◽  
pp. 626-635 ◽  
Author(s):  
Zhonggang Wang ◽  
Jiefu Liu
Keyword(s):  
Theoretical Analysis ◽  
Axial Compression ◽  
Honeycomb Structure ◽  
Aluminum Tubes

Prediction of the mean folding force during the axial compression in foam-filled grooved tubes by theoretical analysis

2012 ◽  
Vol 37 ◽  
pp. 144-151 ◽  
Author(s):  
Abbas Niknejad ◽  
Mohammad Mahdi Abedi ◽  
Gholam Hossein Liaghat ◽  
Mohammad Zamani Nejad
Keyword(s):  
Theoretical Analysis ◽  
Axial Compression ◽  
Foam Filled ◽  
The Mean

Research on Load-Bearing Performance of I-Shaped Column under Cyclic Compression

2014 ◽  
Vol 904 ◽  
pp. 460-464
Author(s):  
Xiao Jing Chen ◽  
Ping Yang ◽  
Hu Wei Cui
Keyword(s):  
Theoretical Analysis ◽  
Axial Compression ◽  
Perfect Match ◽  
Theoretical Method ◽  
Vertical Deflection ◽  
Load Bearing ◽  
Compression Load ◽  
Cyclic Compression ◽  
Comparison Of The Results ◽  
The Relationship

This paper presents a theoretical method to analyze the load bearing capability under cyclic axial compression load. The relationship between axial force and vertical deflection of I-shaped column is obtained by theoretical analysis and derivation. To verify the method and formulas of the paper, an illustrative example column is analyzed by the presented theoretical method and FEM to discuss the deflection performance and load bearing capability. The comparison of the results indicates perfect match between theoretical and numerical ones. It is shown that the theoretical analysis is feasible and reasonable.

scholarly journals Numerical analysis of circular and square section concrete filled aluminum tubes under axial compression

2020 ◽  
Vol 14 (54) ◽  
pp. 169-181
Author(s):  
Pan Jinlong ◽  
Li Guanhua ◽  
Jingming Cai
Keyword(s):  
Mechanical Properties ◽  
Finite Element ◽  
Axial Compression ◽  
Parametric Analysis ◽  
Concrete Strength ◽  
Fe Model ◽  
Fe Method ◽  
The Core ◽  
Aluminum Tubes ◽  
Core Concrete

In this paper, the finite element (FE) method was used to investigate the axial compressive behaviors of circular and square concrete filled aluminum tubes (CFAT). Firstly, the simulational results were compared with the experimental results and the accuracy of the proposed FE model was verified. On this basis, the FE model was further applied to compare the mechanical properties of both circular and square CFATs under axial compression. It was found that the circular CFATs have a better effect on restraining the core concrete than square CFATs. The parametric analysis was also conducted based on the proposed FE model. It was noticed that the mechanical differences of the two kinds of CFATs gradually decreased with the increase of the aluminum ratio, aluminum strength and concrete strength.

Experimental study of collapse mode and crashworthiness response of tempered and annealed aluminum tubes under axial compression

2019 ◽  
Vol 33 (5) ◽  
pp. 2067-2074 ◽  
Author(s):  
Majid Emadi ◽  
Hamid Beheshti ◽  
Mohammad Heidari-Rarani ◽  
Farhad Haji Aboutalebi
Keyword(s):  
Experimental Study ◽  
Axial Compression ◽  
Collapse Mode ◽  
Aluminum Tubes

Theoretical limits on barreling of cylinders under axisymmetric compression

2012 ◽  
Vol 20 (4-6) ◽  
pp. 87-88
Author(s):  
Jorge L. Velez Fournier ◽  
Jayanta K. Banerjee
Keyword(s):  
Aspect Ratio ◽  
Theoretical Analysis ◽  
Axial Compression ◽  
External Load ◽  
Cylindrical Workpiece ◽  
Contact Diameter ◽  
Main Factor

AbstractA theoretical analysis on three different geometrical limits during axial compression of a cylindrical workpiece under monotonically increasing external load is presented. Barreling is the main factor in metalworking industries, and it depends highly on several dimensional ratios such as initial aspect ratio (height/diameter), work/platen contact diameter ratios, etc. For a known material, barreling can be predicted from the mathematical formulations on the geometrical limits presented herein.

Microdiffraction Patterns of Small Metallic Particles II; Theoretical Analysis

1982 ◽  
Vol 40 ◽  
pp. 668-669
Author(s):  
A. Gómez ◽  
P. Schabes-Retchkiman ◽  
M. José-Yacamán ◽  
T. Ocaña
Keyword(s):  
Experimental Data ◽  
Electron Diffraction ◽  
Theoretical Analysis ◽  
Size Range ◽  
Dynamical Theory ◽  
Metallic Particles ◽  
Splitting Effect

The splitting effect that is observed in microdiffraction pat-terns of small metallic particles in the size range 50-500 Å can be understood using the dynamical theory of electron diffraction for the case of a crystal containing a finite wedge. For the experimental data we refer to part I of this work in these proceedings.

Morphologic alteration in the muscles of patients with hypokalemic periodic paralysis or myopathy

1990 ◽  
Vol 48 (3) ◽  
pp. 222-223
Author(s):  
T. Shimizu ◽  
Y. Muranaka ◽  
I. Ohta ◽  
N. Honda
Keyword(s):  
Clinical Manifestations ◽  
Quadriceps Muscle ◽  
Honeycomb Structure ◽  
Periodic Paralysis ◽  
Ultrastructural Changes ◽  
Hypokalemic Periodic Paralysis ◽  
Electron Microscopic ◽  
Tubular Aggregates ◽  
Hypokalemic Myopathy ◽  
Transmission Electron

There have been many reports on ultrastructural alterations in muscles of hypokalemic periodic paralysis (hpp) and hypokalemic myopathy(hm). It is stressed in those reports that tubular structures such as tubular aggregates are usually to be found in hpp as a characteristic feature, but not in hm. We analyzed the histological differences between hpp and hm, comparing their clinical manifestations and morphologic changes in muscles. Materials analyzed were biopsied muscles from 18 patients which showed muscular symptoms due to hypokalemia. The muscle specimens were obtained by means of biopsy from quadriceps muscle and fixed with 2% glutaraldehyde (pH 7.4) and analyzed by ordinary method and modified Golgimethod. The ultrathin section were examined in JEOL 200CX transmission electron microscopy.Electron microscopic examinations disclosed dilated t-system and terminal cistern of sarcoplasmic reticulum (SR)(Fig 1), and an unique structure like “sixad” was occasionally observed in some specimens (Fig 2). Tubular aggregates (Fig 3) and honeycomb structure (Fig 4) were also common characteristic structures in all cases. These ultrastructural changes were common in both the hypokalemic periodic paralysis and the hypokalemic myopathy, regardless of the time of biopsy or the duration of hypokalemia suffered.

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