Stacking sequence optimization of simply supported laminates with stability and strain constraintsAn integer programming formulation for the design of symmetric and balanced rectangular composite laminates with simply supported boundary conditions subject to buckling and strain constraints is presented. The design variables that define the stacking sequence of the laminate are ply-identity zero-one integers. The buckling constraint is linear in terms of the ply-identity design variables, but strains are nonlinear functions of these variables. A linear approximation is developed for the strain constraints so that the problem can be solved by sequential linearization using the branch and bound algorithm. Examples of graphite-epoxy plates under biaxial compression are presented. Optimum stacking sequences obtained using the linear approximation are compared with global optimum designs obtained using a genetic search procedure.
Document ID
19920051911
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Nagendra, S. (NASA Langley Research Center Hampton, VA, United States)
Haftka, R. T. (NASA Langley Research Center Hampton, VA, United States)
Gurdal, Z. (Virginia Polytechnic Institute and State University Blacksburg, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1992
Subject Category
Structural Mechanics
Report/Patent Number
AIAA PAPER 92-2310
Meeting Information
Meeting: AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference