Abstract
The paper develops the theory of nonlinear structural design sensitivity analysis for composites undergoing finite elastoplastic deformation. The rate (time-independent) constitutive model, which is objective, is employed to account for the plastic material behavior undergoing finite deformations. The reference volume concept is used to unify the shape and nonshape design problems. A higher order approximation procedure of the integration of the rate constitutive equations is used for the response analysis. The direct differentiation approach is adopted to obtain the design sensitivity equations. A method of partial differentiation of the rate constitutive equations, which yields a set of linear differential equations in the partial derivatives of stresses and internal variables with respect to the design variable, is used. The presentation of the general theory is followed by a numerical example. A composite laminated beam is used as an example and results obtained using the theory developed are compared with those from finite difference.
| Original language | English (US) |
|---|---|
| Title of host publication | Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference |
| Publisher | AIAA |
| Pages | 1742-1752 |
| Number of pages | 11 |
| Volume | 3 |
| State | Published - 1994 |
| Event | Proceedings of the 35th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. Part 1 (of 5) - Hilton Head, SC, USA Duration: Apr 18 1994 → Apr 20 1994 |
Other
| Other | Proceedings of the 35th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. Part 1 (of 5) |
|---|---|
| City | Hilton Head, SC, USA |
| Period | 4/18/94 → 4/20/94 |
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ASJC Scopus subject areas
- Architecture
Cite this
Design sensitivity analysis technique for composites undergoing finite elastoplastic deformation. / Chattopadhyay, Aditi; Guo, Ruijiang.
Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference. Vol. 3 AIAA, 1994. p. 1742-1752.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Design sensitivity analysis technique for composites undergoing finite elastoplastic deformation
AU - Chattopadhyay, Aditi
AU - Guo, Ruijiang
PY - 1994
Y1 - 1994
N2 - The paper develops the theory of nonlinear structural design sensitivity analysis for composites undergoing finite elastoplastic deformation. The rate (time-independent) constitutive model, which is objective, is employed to account for the plastic material behavior undergoing finite deformations. The reference volume concept is used to unify the shape and nonshape design problems. A higher order approximation procedure of the integration of the rate constitutive equations is used for the response analysis. The direct differentiation approach is adopted to obtain the design sensitivity equations. A method of partial differentiation of the rate constitutive equations, which yields a set of linear differential equations in the partial derivatives of stresses and internal variables with respect to the design variable, is used. The presentation of the general theory is followed by a numerical example. A composite laminated beam is used as an example and results obtained using the theory developed are compared with those from finite difference.
AB - The paper develops the theory of nonlinear structural design sensitivity analysis for composites undergoing finite elastoplastic deformation. The rate (time-independent) constitutive model, which is objective, is employed to account for the plastic material behavior undergoing finite deformations. The reference volume concept is used to unify the shape and nonshape design problems. A higher order approximation procedure of the integration of the rate constitutive equations is used for the response analysis. The direct differentiation approach is adopted to obtain the design sensitivity equations. A method of partial differentiation of the rate constitutive equations, which yields a set of linear differential equations in the partial derivatives of stresses and internal variables with respect to the design variable, is used. The presentation of the general theory is followed by a numerical example. A composite laminated beam is used as an example and results obtained using the theory developed are compared with those from finite difference.
UR - http://www.scopus.com/inward/record.url?scp=0028714536&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0028714536&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:0028714536
VL - 3
SP - 1742
EP - 1752
BT - Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
PB - AIAA
ER -