Inclusion Modeling of Bucket Elevator Conveyor Chain Links

Inclusions, pores, and cracks which are defects in materials are important in determining the structural integrity and durability of components. Modeling accurately, these defects are hence of interest to both theorist and the practitioner. CAD models were designed using Autodesk Inventor software, and simulation was performed using ANSYS academic software. Material saving in design of conveyor chain links has gained popularity, and this has led to the introduction of necks in its geometry. However, the effect of necking on various parameters was not considered. Also, inclusions which are defects in material are known to have adverse effect on the conveyor chain link. It is, therefore, imperative to predict numerically, the effects that inclusions and necking have on conveyor chain links This paper focusses on modeling nonmetallic inclusions and also tests various models of different neck radii using the finite element method so as to predict its effect.

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Structural Integrity Analysis of Hole Shape and Location in Lotus Root

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.461.81 ◽

2013 ◽

Vol 461 ◽

pp. 81-84

Author(s):

Chang Jiang Wang ◽

Jin Li Choon ◽

Kevin Kibble

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Structural Integrity ◽

The Finite Element Method ◽

Ansys Software ◽

Hole Shape ◽

Lotus Root ◽

Component Design ◽

Integrity Analysis ◽

Shape And Size

Hole shapes and their locations in lotus roots were studied and presented in this paper. The finite element method was used to study the effect of several factors on the structural integrity of a lotus root-like component. The factors considered in this paper include hole shape, number, size and location. The analysis of different structures was carried out using ANSYS software and assuming a porosity of 20% for each case. Stress values, effects of each factor and interactions between factors are discussed in the paper. The results from the analysis showed that engineering component design can be inspired by the lotus root which has several holes of different shape and size.

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STRESS ANALYSIS AND TOPOLOGY OPTIMIZATION OF A CHAIN BUCKET ELEVATOR USING ANSYS

Acta Polytechnica ◽

10.14311/ap.2021.61.0292 ◽

2021 ◽

Vol 61 (1) ◽

pp. 292-306

Author(s):

Edward Yin ◽

Emmanuel M. Seckley ◽

Evans Kesse Asiedu ◽

Stephen Cobbinah

Keyword(s):

Topology Optimization ◽

Maximum Load ◽

Maintenance And Repair ◽

Ratchet Mechanism ◽

Repair Costs ◽

Chain Link ◽

Bucket Elevator ◽

A Chain ◽

Time Required ◽

Chain Links

A failure of conveyor chain links in a production process can cause unscheduled shutdowns, which increase the throughput time coupled with damaged buckets and chain links, which increase maintenance and repair costs. Since failures of conveyor chains are inevitable, this research aims to modify the design of the chain bucket elevator by incorporating a ratchet mechanism, which will prevent the chain bucket assembly from dropping to the bottom of the chain bucket elevator whenever there is a chain-link failure and also avoid the jamming of the bucket chain assembly against one another when dropping to the bottom of the elevator during failure. The number of damaged buckets and chains will be minimal, thereby reducing the maintenance and repair costs. Also, the time required for replacing the failed chain link will be reduced, which in turn, will reduce the down-time, thereby increasing the production rate. The ratchet mechanism, which can withstand a maximum load of 38.10 kN, comprises a toothed wheel, a pawl, and a spring. An analytical method was employed for the initial analysis and the results were verified using the FEM. Topology Optimization was carried out on the beam and lever with results showing a 20% and 26% weight reduction from the original, respectively. The stresses induced in the beam and lever increased significantly by 36% and 47 %, respectively, because of the optimization, however, they remained within the acceptable limits.

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Simulation of tuning graphene plasmonic behaviors by ferroelectric domains for self-driven infrared photodetector applications

Nanoscale ◽

10.1039/c9nr06508c ◽

2019 ◽

Vol 11 (43) ◽

pp. 20868-20875 ◽

Cited By ~ 1

Author(s):

Junxiong Guo ◽

Yu Liu ◽

Yuan Lin ◽

Yu Tian ◽

Jinxing Zhang ◽

...

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Interfacial Effect ◽

Infrared Photodetector ◽

The Finite Element Method ◽

Ferroelectric Domains ◽

Element Method

We propose a graphene plasmonic infrared photodetector tuned by ferroelectric domains and investigate the interfacial effect using the finite element method.

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