CRUSH BEHAVIOR OF HONEYCOMB STRUCTURE IMPACTED BY DROP-HAMMER AND ITS NUMERICAL ANALYSIS

This research presents results obtained from numerical analysis of a circular composite plate under impact of drop hammer and internal pressure load simultaneously. Influence of reinforced orientationangles of the multi-layer composite plate with fixed boundary conditions on displacements and axial stresses along the radius direction was studied. Employing ABAQUS software results for reinforcedorientation angles of [0/90/0]s, [0/45/60]s, [0/45/90]s, [0/30/60]s, [0/30/75]s, [0/15/30/60/75/90],[0/45/90/90/-45/0] are compared. Finding indicated that the reinforcedorientation angles have considerable effect on the axial stresses changing from compressive to tensile stresses. [0/45/90/90/-45/0]s showed the minimum displacements and axial stresses.

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Theoretical and numerical analysis of the folding mechanism of vertex-based hierarchical honeycomb structure

Mechanics of Advanced Materials and Structures ◽

10.1080/15376494.2019.1665760 ◽

2019 ◽

Vol 27 (10) ◽

pp. 789-799 ◽

Cited By ~ 1

Author(s):

Zhonggang Wang ◽

Zhendong Li ◽

Chong Shi ◽

Wei Zhou

Keyword(s):

Numerical Analysis ◽

Honeycomb Structure ◽

Folding Mechanism ◽

Theoretical And Numerical Analysis

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Numerical Analysis on Vibro-acoustic Characterisation of Hybrid Honeycomb Structure with Flow Permeability

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/815/1/012007 ◽

2020 ◽

Vol 815 ◽

pp. 012007

Author(s):

Zhen Wei Tee ◽

Choe Yung Teoh

Keyword(s):

Numerical Analysis ◽

Honeycomb Structure

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Numerical Analysis of Honeycomb Structure Crushed under Oblique Impact

Journal of the Society of Materials Science Japan ◽

10.2472/jsms.70.831 ◽

2021 ◽

Vol 70 (11) ◽

pp. 831-837

Author(s):

Tsutomu UMEDA ◽

Kosuke KANAYAMA ◽

Koji MIMURA

Keyword(s):

Numerical Analysis ◽

Oblique Impact ◽

Honeycomb Structure

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

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100158650 ◽

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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