Variational Formulation and Finite Element Implementation of Pagano's Theory of Laminated Plates

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Abstract:

Paganos theory of laminated plates is restated in the form of a set of self-adjoint differential equations. Identifying consistent boundary operators, general variational principle is stated following standard procedures for linear coupled self adjoint systems of equations. Extensions to relax requirements of differentiability of various field variables are indicated along with specializations to reduce the number of free field variables. One specialization is implemented in a finite element computer program and used to solve several example problems of free-edge delamination specimens. Composite Laminates, Laminated Plates, Finite Element Methods, Variational Methods.

Author(s):
Sandh, R. S. ; Wolfe, William E. ; Chyou, Hui-huang
Author Organization(s):
OHIO STATE UNIV COLUMBUS DEPT OF CIVIL ENGINEERING
Descriptive Note:
Final rept. Jul 1985-Aug 1990
Pagination:
0215

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
WL*-TR-91-3016
Contract/Grant Number(s):
F33615-85-C-3213
Task Number(s):
N1
Project Number(s):
2302
Monitor Series:
TR-91-3016, WL*
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_5.3_Planning; JCA_5.1.1_Establish and Maintain Unity of Effort with Mission Partners; JCA_5.1_Organize; JCA_5.3.3_Develop Strategy; JCA_5.3.4_Develop Courses of Action; JCA_5.3.5_Analyze Courses of Action; JCA_1.4.2_Health Service Delivery; JCA_1.4_Force Support; JCA_1_Force Support; JCA_1.2_Force Preparation; JCA_6_Net Centric; JCA_1.2.3_Educating
Modernization Areas:
Fully Networked C3; Directed Energy
Communities of Interest:
Air Platforms
Descriptor(s):
*LAMINATES, *PLATES, COMPUTER PROGRAMS, REQUIREMENTS, STRESS ANALYSIS, DISPLACEMENT, STRAIN(MECHANICS), BOUNDARIES, DIFFERENTIAL EQUATIONS, SPECIALIZATION, VARIATIONAL PRINCIPLES, DELAMINATION, FAILURE(MECHANICS), NUMBERS, EQUATIONS, STANDARDS, FREE FIELD, VARIABLES, THEORY, FINITE ELEMENT ANALYSIS, COMPUTERS, EDGES
Field(s)/Group(s):
Laminates and Composite Materials, Numerical Mathematics
Keyword(s):
LPN OSURF 764799 717297, PAGANO THEORY, PE61102F, WUWL2302N102
Report Date:
1991 Jul 12