Determination of time-dependent constitutive model parameters for microcrystalline cellulose

Linchang Huang, Virendra Puri

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Material parameters of a time-dependent elasto-viscoplaslic constitutive model, proposed by Adachi and Oka, have been determined for microcrystalline cellulose. Adachi and Oka model has eight material parameters, with five of them (i.e., consolidation index, swelling index, critical index, shear modulus, and Poisson’s ratio) same as those in the more commonly used in time-independent modified Cam-clay model, and remaining three parameters account for time-dependency. To measure the time-dependent parameters, constant strain-rate conventional triaxial compression (CTC) test was designed and conducted using Penn Slate’s flexible-boundary cubical triaxial tester (CTT) with microcrystalline cellulose as the test material. To deposit the powder, the sprinkle filling method was used in a layer by layer fashion with a small spoon. The three time-dependent Adachi and Oka parameters were determined from these tests. Adachi and Oka model was verified by comparing the predicted values from the model with measured values from the CTT at 0.05 level of significance. Results showed that: 1) there were no significant differences (p>0.05) between measured and predicted HTC responses at all loading rates; 2) failure values were predicted accurately (p>0.05); and 3) there were significant differences (p<0.05) between measured and predicted CTC responses at all loading rates.

Original languageEnglish (US)
Pages (from-to)9-24
Number of pages16
JournalParticulate Science and Technology
Volume18
Issue number1
DOIs
StatePublished - Jan 1 2000

Fingerprint

Constitutive models
Cellulose
Cams
Poisson ratio
Consolidation
Powders
Swelling
Strain rate
Clay
Deposits
Elastic moduli
microcrystalline cellulose

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

Cite this

@article{d3b036089e1145fcbc3fe67f30c7bceb,
title = "Determination of time-dependent constitutive model parameters for microcrystalline cellulose",
abstract = "Material parameters of a time-dependent elasto-viscoplaslic constitutive model, proposed by Adachi and Oka, have been determined for microcrystalline cellulose. Adachi and Oka model has eight material parameters, with five of them (i.e., consolidation index, swelling index, critical index, shear modulus, and Poisson’s ratio) same as those in the more commonly used in time-independent modified Cam-clay model, and remaining three parameters account for time-dependency. To measure the time-dependent parameters, constant strain-rate conventional triaxial compression (CTC) test was designed and conducted using Penn Slate’s flexible-boundary cubical triaxial tester (CTT) with microcrystalline cellulose as the test material. To deposit the powder, the sprinkle filling method was used in a layer by layer fashion with a small spoon. The three time-dependent Adachi and Oka parameters were determined from these tests. Adachi and Oka model was verified by comparing the predicted values from the model with measured values from the CTT at 0.05 level of significance. Results showed that: 1) there were no significant differences (p>0.05) between measured and predicted HTC responses at all loading rates; 2) failure values were predicted accurately (p>0.05); and 3) there were significant differences (p<0.05) between measured and predicted CTC responses at all loading rates.",
author = "Linchang Huang and Virendra Puri",
year = "2000",
month = "1",
day = "1",
doi = "10.1080/02726350008906824",
language = "English (US)",
volume = "18",
pages = "9--24",
journal = "Particulate Science and Technology",
issn = "0272-6351",
publisher = "Taylor and Francis Ltd.",
number = "1",

}

Determination of time-dependent constitutive model parameters for microcrystalline cellulose. / Huang, Linchang; Puri, Virendra.

In: Particulate Science and Technology, Vol. 18, No. 1, 01.01.2000, p. 9-24.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Determination of time-dependent constitutive model parameters for microcrystalline cellulose

AU - Huang, Linchang

AU - Puri, Virendra

PY - 2000/1/1

Y1 - 2000/1/1

N2 - Material parameters of a time-dependent elasto-viscoplaslic constitutive model, proposed by Adachi and Oka, have been determined for microcrystalline cellulose. Adachi and Oka model has eight material parameters, with five of them (i.e., consolidation index, swelling index, critical index, shear modulus, and Poisson’s ratio) same as those in the more commonly used in time-independent modified Cam-clay model, and remaining three parameters account for time-dependency. To measure the time-dependent parameters, constant strain-rate conventional triaxial compression (CTC) test was designed and conducted using Penn Slate’s flexible-boundary cubical triaxial tester (CTT) with microcrystalline cellulose as the test material. To deposit the powder, the sprinkle filling method was used in a layer by layer fashion with a small spoon. The three time-dependent Adachi and Oka parameters were determined from these tests. Adachi and Oka model was verified by comparing the predicted values from the model with measured values from the CTT at 0.05 level of significance. Results showed that: 1) there were no significant differences (p>0.05) between measured and predicted HTC responses at all loading rates; 2) failure values were predicted accurately (p>0.05); and 3) there were significant differences (p<0.05) between measured and predicted CTC responses at all loading rates.

AB - Material parameters of a time-dependent elasto-viscoplaslic constitutive model, proposed by Adachi and Oka, have been determined for microcrystalline cellulose. Adachi and Oka model has eight material parameters, with five of them (i.e., consolidation index, swelling index, critical index, shear modulus, and Poisson’s ratio) same as those in the more commonly used in time-independent modified Cam-clay model, and remaining three parameters account for time-dependency. To measure the time-dependent parameters, constant strain-rate conventional triaxial compression (CTC) test was designed and conducted using Penn Slate’s flexible-boundary cubical triaxial tester (CTT) with microcrystalline cellulose as the test material. To deposit the powder, the sprinkle filling method was used in a layer by layer fashion with a small spoon. The three time-dependent Adachi and Oka parameters were determined from these tests. Adachi and Oka model was verified by comparing the predicted values from the model with measured values from the CTT at 0.05 level of significance. Results showed that: 1) there were no significant differences (p>0.05) between measured and predicted HTC responses at all loading rates; 2) failure values were predicted accurately (p>0.05); and 3) there were significant differences (p<0.05) between measured and predicted CTC responses at all loading rates.

UR - http://www.scopus.com/inward/record.url?scp=0033839735&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033839735&partnerID=8YFLogxK

U2 - 10.1080/02726350008906824

DO - 10.1080/02726350008906824

M3 - Article

VL - 18

SP - 9

EP - 24

JO - Particulate Science and Technology

JF - Particulate Science and Technology

SN - 0272-6351

IS - 1

ER -