Abstract
A multilinear parametric uniaxial stress strain approach has been used to obtain the closed form nonlinear load deflection response based on strain compatibility in bending for epoxy resin materials. A constitutive model for tension and compression of resin polymeric material is proposed. The model consists of a bilinear ascending curve followed by strain softening and constant plastic flow in tension and compression. The model is described by two main parameters; modulus of elasticity in tension and strain at the proportional elastic limit point in tension, in addition to twelve non-dimensional tension and compression parameters. Moment curvature equations, deformation localization, and static equilibrium conditions were used to simulate the flexural load deflection response of a beam under three-point bending and four-point bending conditions. Results show a considerable underestimation in flexural load carrying capacity if the uniaxial tension and compression stress strain curves are directly used.
| Original language | English (US) |
|---|---|
| Title of host publication | Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference |
| DOIs | |
| State | Published - 2011 |
| Event | 52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference - Denver, CO, United States Duration: Apr 4 2011 → Apr 7 2011 |
Other
| Other | 52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference |
|---|---|
| Country | United States |
| City | Denver, CO |
| Period | 4/4/11 → 4/7/11 |
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ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Materials Science(all)
- Aerospace Engineering
- Architecture
Cite this
Inverse analysis of constitutive relation for epoxy resin materials. / Yekani Fard, Masoud; Liu, Yingtao; Chattopadhyay, Aditi.
Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference. 2011. AIAA 2011-1746.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Inverse analysis of constitutive relation for epoxy resin materials
AU - Yekani Fard, Masoud
AU - Liu, Yingtao
AU - Chattopadhyay, Aditi
PY - 2011
Y1 - 2011
N2 - A multilinear parametric uniaxial stress strain approach has been used to obtain the closed form nonlinear load deflection response based on strain compatibility in bending for epoxy resin materials. A constitutive model for tension and compression of resin polymeric material is proposed. The model consists of a bilinear ascending curve followed by strain softening and constant plastic flow in tension and compression. The model is described by two main parameters; modulus of elasticity in tension and strain at the proportional elastic limit point in tension, in addition to twelve non-dimensional tension and compression parameters. Moment curvature equations, deformation localization, and static equilibrium conditions were used to simulate the flexural load deflection response of a beam under three-point bending and four-point bending conditions. Results show a considerable underestimation in flexural load carrying capacity if the uniaxial tension and compression stress strain curves are directly used.
AB - A multilinear parametric uniaxial stress strain approach has been used to obtain the closed form nonlinear load deflection response based on strain compatibility in bending for epoxy resin materials. A constitutive model for tension and compression of resin polymeric material is proposed. The model consists of a bilinear ascending curve followed by strain softening and constant plastic flow in tension and compression. The model is described by two main parameters; modulus of elasticity in tension and strain at the proportional elastic limit point in tension, in addition to twelve non-dimensional tension and compression parameters. Moment curvature equations, deformation localization, and static equilibrium conditions were used to simulate the flexural load deflection response of a beam under three-point bending and four-point bending conditions. Results show a considerable underestimation in flexural load carrying capacity if the uniaxial tension and compression stress strain curves are directly used.
UR - http://www.scopus.com/inward/record.url?scp=84872453515&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84872453515&partnerID=8YFLogxK
U2 - 10.2514/6.2011-1746
DO - 10.2514/6.2011-1746
M3 - Conference contribution
AN - SCOPUS:84872453515
SN - 9781600869518
BT - Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
ER -