DROP IMPACT ANALYSIS ON THE PACKAGING SYSTEM USING HONEYCOMB PAPERBOARD

2011 ◽  
Vol 10 (01) ◽  
pp. 167-174 ◽  
Author(s):  
YUAN-JUN LV ◽  
QIONG CHEN
Keyword(s):  
Impact Analysis ◽  
Material Selection ◽  
Deformable Body ◽  
Drop Impact ◽  
Structure Design ◽  
Dynamic Responses ◽  
Honeycomb Core ◽  
Packaging System ◽  
Size Dimension ◽  
Paper Honeycomb

A packaging system using the material of honeycomb paperboard, when it is subjected to drop impact, is a major concern to manufacturers as it relates to the maximum stress causing failure. In this work, the full-field dynamic responses of product packaging system are measured and analyzed in detail with the simulation and experiment method. First, on the basis of theoretical analysis, a series of honeycomb paperboards with different size dimension of paper honeycomb core had been set up in the FEA software. Then a packaging system which is made up of rigid body and deformable body had been analyzed. The results show that the physical dimension of paper honeycomb core has a great effect on its impact resistance: with the increasing size dimension, the peak acceleration has a quickly alteration within 10 mm–20 mm, but in other region it has an effect in the form of up and down fluctuation. At the same time, with the increasing size dimension, honeycomb paperboard can improve the energy absorption ability in the condition of elastic deformation. The research results can be used to optimize the structure design and material selection.

Drop Impact Behavior of Packaging System with Irregular Honeycomb Core

2010 ◽  
Vol 146-147 ◽  
pp. 127-133 ◽  
Author(s):  
Qiong Chen ◽  
Yuan Jun Lv
Keyword(s):  
Deformable Body ◽  
Impact Resistance ◽  
Drop Impact ◽  
Structure Design ◽  
Impact Behavior ◽  
Honeycomb Core ◽  
Packaging System ◽  
Product Packaging ◽  
Set Up ◽  
Paper Honeycomb

For a product packaging system with honeycomb paperboard, its impact resistance caused by drop impact behavior had been concerned. However, irregular hexagon structure of the paper honeycomb core exists in package business, which is attributable to laggard glue applicator. It has an impact on its impact characteristics. Drop impact behavior of packaging system with irregular honeycomb core has been put forward to know its influence. First, on the basis of theoretical analysis, a series of honeycomb paperboards with different size dimension of paper honeycomb core had been set up in the FEA software. Then a packaging system which made up of rigid body and deformable body had been analyzed. The results show that the physical dimension of paper honeycomb core has a great effect on its impact resistance: with the increasing on degree of irregularity of paper honeycomb core, the peak acceleration has a quickly alteration. At the same time, when the length of glued edge is in near 4 mm and the girth of honeycomb core is 36mm, honeycomb paperboard can improve the energy absorption ability in the condition of elastic deformation. The research results can be used to optimize the structure design.

scholarly journals Ballistic Resistance of Honeycomb Sandwich Panels under In-Plane High-Velocity Impact

2013 ◽  
Vol 2013 ◽  
pp. 1-20 ◽  
Author(s):  
Chang Qi ◽  
Shu Yang ◽  
Dong Wang ◽  
Li-Jun Yang
Keyword(s):  
Structural Parameters ◽  
Sandwich Panels ◽  
Unit Cell ◽  
Dynamic Responses ◽  
Honeycomb Core ◽  
Ballistic Resistance ◽  
Honeycomb Sandwich ◽  
Aluminum Honeycomb ◽  
Parametric Studies ◽  
Nonmonotonic Effects

The dynamic responses of honeycomb sandwich panels (HSPs) subjected to in-plane projectile impact were studied by means of explicit nonlinear finite element simulations using LS-DYNA. The HSPs consisted of two identical aluminum alloy face-sheets and an aluminum honeycomb core featuring three types of unit cell configurations (regular, rectangular-shaped, and reentrant hexagons). The ballistic resistances of HSPs with the three core configurations were first analyzed. It was found that the HSP with the reentrant auxetic honeycomb core has the best ballistic resistance, due to the negative Poisson’s ratio effect of the core. Parametric studies were then carried out to clarify the influences of both macroscopic (face-sheet and core thicknesses, core relative density) and mesoscopic (unit cell angle and size) parameters on the ballistic responses of the auxetic HSPs. Numerical results show that the perforation resistant capabilities of the auxetic HSPs increase as the values of the macroscopic parameters increase. However, the mesoscopic parameters show nonmonotonic effects on the panels' ballistic capacities. The empirical equations for projectile residual velocities were formulated in terms of impact velocity and the structural parameters. It was also found that the blunter projectiles result in higher ballistic limits of the auxetic HSPs.

Mechanical Event Simulation of Drop Testing for Toy Product

2006 ◽  
Vol 532-533 ◽  
pp. 993-996
Author(s):  
Anthony Yee Kai Yam ◽  
Kai Leung Yung ◽  
Chi Wo Lam
Keyword(s):  
Material Properties ◽  
Impact Analysis ◽  
Plastic Material ◽  
Free Fall ◽  
Drop Impact ◽  
Local Analysis ◽  
Element Analysis ◽  
Event Simulation ◽  
Long Time ◽  
The Impact

Toys that are free from drop failures normally take a long time to develop. It is often time and cost consuming after the production tooling is built to detect drop test failure. This paper introduces a new drop testing analysis method for Toys. The method uses a simple approach with a local analysis that based on the linear and non linear finite element analysis. Modeling and transient drop analysis of a pre-school toy is used as a case study to demonstrate the method. The impact analysis of the product hitting the solid concrete floor after a free fall is presented. The analysis focuses on the deformation of the housing for a product with electronic circuit and mechanical mechanism inside. Experimental data has been obtained for drop simulation of the housing and its correlation with the plastic material properties. The stress and strain of the housing during drop impact tests are noted. The effects of the material properties to the housing deflection under drop/impact shock have been investigated. Numerical results are compared with experimental results to validate the method.

Polymers for high performance Li-S batteries: Material selection and structure design

2019 ◽  
Vol 89 ◽  
pp. 19-60 ◽  
Author(s):  
Sheng Huang ◽  
Ruiteng Guan ◽  
Shuanjin Wang ◽  
Min Xiao ◽  
Dongmei Han ◽  
...  
Keyword(s):  
High Performance ◽  
Material Selection ◽  
Structure Design

scholarly journals Deformation and Failure Behavior of Wooden Sandwich Composites with Taiji Honeycomb Core under a Three-Point Bending Test

Materials ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2325 ◽  
Author(s):  
Jingxin Hao ◽  
Xinfeng Wu ◽  
Gloria Oporto ◽  
Jingxin Wang ◽  
Gregory Dahle ◽  
...  
Keyword(s):  
Shear Failure ◽  
Dominant Role ◽  
Honeycomb Structure ◽  
Structure Design ◽  
Bending Test ◽  
Failure Behavior ◽  
Sandwich Composites ◽  
Honeycomb Core ◽  
Deformation And Failure ◽  
Three Point Bending

A new type of Taiji honeycomb structure bonded outside with wood-based laminates was characterized from a mechanical standpoint. Both theoretical and experimental methods were employed to analyze comprehensively the deformation behavior and failure mechanism under a three-point bending test. The analytical analysis reveals that a Taiji honeycomb has 3.5 times higher strength in compression and 3.44 times higher strength in shear compared with a traditional hexagonal honeycomb. Considering the strength-weight issue, the novel structure also displays an increase in compression strength of 1.75 times and shear strength of 1.72 times. Under a three-point bending test, indentation and core shear failure played the dominant role for the total failure of a wooden sandwich with Taiji honeycomb core. Typical face yield was not observed due to limited thickness-span ratio of specimens. Large spans weaken the loading level due to the contribution of global bending stress in the compressive skin to indentation failure. A set of analytical equations between mechanical properties and key structure parameters were developed to accurately predict the threshold stresses corresponding to the onset of those deformation events, which offer critical new knowledge for the rational structure design of wooden sandwich composites.

Design and Realization of a Flexible Claw of Rough Wall Climbing Robot

2011 ◽  
Vol 328-330 ◽  
pp. 388-392 ◽  
Author(s):  
Dong Liang Chen ◽  
Qun Zhang ◽  
Shao Zhi Liu
Keyword(s):  
Experimental Study ◽  
Degrees Of Freedom ◽  
Material Selection ◽  
Structure Design ◽  
Rough Wall ◽  
Flexible Structure ◽  
Climbing Robot ◽  
Mechanical Structure ◽  
Four Bar Linkage

Based on the research of foot characteristics of insecta, a climbing robot’s mechanical structure and kinematics are analyzed, and the main crawling institutions was designed by a kind of bionic four-bar linkage. Claws are made of sharp spines, claws are composed of a number of toes which are flexible structure with local degrees of freedom, they have a grate adaptivity to the rough wall. We have studied the characteristics of the rough wall climbing, and made analysis affection of reliability with the angle perched on. The experimental study indicates spine planning and structure design, material selection are reasonable.

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