The internal form of compacted ceramic components: a comparison of a finite element modelling with experiment

Aydın, İsmail; Briscoe, B.J.; Şanlıtürk, Kenan Y.

doi:10.1016/s0032-5910(96)03188-9

Cited by 138 publications

(81 citation statements)

References 26 publications

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“…However, FEA has been used to describe mechanical behaviour and structure during compaction, unloading and ejection along with the friction generated at the powder die-wall interface (Mori et al 1999). Aydin et al (1996) predicted the density distributions within ceramic compacts and demonstrated an excellent agreement between observed and predicted values. It can be envisaged that FEA could be used as a design tool to calculate the density distribution of pharmaceutical tablets, correlating the density distribution with tablet disintegration and drug release rates.…”

Section: Computer Simulationmentioning

confidence: 99%

“…FEA simulates the compaction process by dividing the powder bed into a series of discrete elements. The stress± strain behaviour within each individual element on compression is calculated using a de® ned constitutive model, which may include elastic, plastic and viscoelastic deformation (Aydin et al 1996). The computer simulation sums the stress± strain behaviour of all the individual elements and the simulated behaviour is believed to represent the real powder undergoing compaction.…”

Section: Computer Simulationmentioning

confidence: 99%

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Predictive and correlative techniques for the design, optimisation and manufacture of solid dosage forms

Hardy

Cook

2003

Journal of Pharmacy and Pharmacology

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There is much interest in predicting the properties of pharmaceutical dosage forms from the properties of the raw materials they contain. Achieving this with reasonable accuracy would aid the faster development and manufacture of dosage forms. A variety of approaches to prediction or correlation of properties are reviewed. These approaches have variable accuracy, with no single technique yet able to provide an accurate prediction of the overall properties of the dosage form. However, there have been some successes in predicting trends within a formulation series based on the physicochemical and mechanical properties of raw materials, predicting process scale-up through mechanical characterisation of materials and predicting product characteristics by process monitoring. Advances in information technology have increased predictive capability and accuracy by facilitating the analysis of complex multivariate data, mapping formulation characteristics and capturing past knowledge and experience.

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Section: Computer Simulationmentioning

confidence: 99%

Section: Computer Simulationmentioning

confidence: 99%

Predictive and correlative techniques for the design, optimisation and manufacture of solid dosage forms

Hardy

Cook

2003

Journal of Pharmacy and Pharmacology

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“…These were originally developed for application in soil mechanics and geotechniques. These models have been adapted to model the compaction of metal powders [20], ceramic powders [21], and pharmaceutical powders [22][23][24][25], in biomass industry for corn stover and switchgrass by Kaliyan and Morey [12] and numerous other models involving other powder compaction industry.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Characterization of Reed Canary Grass Pellet Formation Phenomenon

Dhamodaran

Afzal

2013

IJRSE

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Abstract:The behaviour of pelletized reed canary grass (RCG) with selected feedstock and process parameters was studied for variation in springback characteristics based on axial changes after the compaction process. Experiments were carried out using a uniaxial single piston cylinder assembly with a proportional integral derivative temperature controller which was built in house for research purposes. A Multiple linear regression analysis based on moisture, temperature, pressure, hold time and their interaction terms was carried out to predict the length of pellets under compression in the die and excellent correlation were obtained. A finite difference method with over relaxation technique was successfully adopted to analyse the pressure and density distributions of biomass under compressive load. The compact geometry and friction between particles and die wall had effects on the pressure and density distributions in the compacted biomass. RCG pellets with lowest expansion were subjected to axial and diametrical compression tests. Bonding and failure analysis were carried out using scanning electron microscope which showed uneven breakage and interparticle voids.

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“…Puri et al (1995)). Doublesurface models such as the Drucker-Prager/cap elasto-plastic model have been used to describe ceramic powder stress-strain behavior (see Gethin et al (1994), Aydin et al (1996); Chtourou et al All the models discussed so far neglect the effect of the third stress invariant on the behavior. Yet, there is experimental evidence showing that all three principal stresses, 1 σ , 2 σ , 3 σ (or equivalently all three stress invariants) influence the deformation and failure of particulate systems (see for example, Bardett and Lode, 1990;Peric and Ayari, 2000;Alawaji et al (1992); Lade and Kim (1995), Saxena et al (1988), Verwijs et al(2002), etc.).…”

Section: Ii1 Introductionmentioning

confidence: 99%

Steady Flow of a Particulate Target Medium Over a Projectile: Experiments and Modeling

Cazacu¹,

Cristescu²

2005

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Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing this collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden to Department of Defense, Washington Headquarters Services, Directorate for Information , 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS. REPORT DATE (DD-MM-YYYY) ABSTRACTThis report presents the results of an experimental investigation on the deformation and strength

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The internal form of compacted ceramic components: a comparison of a finite element modelling with experiment

Cited by 138 publications

References 26 publications

Predictive and correlative techniques for the design, optimisation and manufacture of solid dosage forms

Predictive and correlative techniques for the design, optimisation and manufacture of solid dosage forms

Modeling and Characterization of Reed Canary Grass Pellet Formation Phenomenon

Steady Flow of a Particulate Target Medium Over a Projectile: Experiments and Modeling

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