TY - GEN
T1 - Configuration design of structures using discrete optimization approach
AU - Shim, Patrick Y.
AU - Manoochehri, Souran
N1 - Publisher Copyright:
© 1994 American Society of Mechanical Engineers (ASME). All rights reserved.
PY - 1994
Y1 - 1994
N2 - Tbis paper presents a methodology for the generation of fully stressed shape configuration design of struaures. An important aspect of this approach is the ability to rrìodify the topology element model Then the boundary shape of the object represented by a finite Therefore, features such as holes or slots can De added even though they as well as have not been part of the initial model. This work is based on altering the finite element structure by removing or restoring elements to generate fully stressed designs subject to constraints on maximum stress value and maintenance of connectivity between the elements. The algorithm tion process with the normalized elastic modul uses binary value integer programming for the discrete optimizamalized modulus of each design element selaied as des^ n variable. The optimization results consist of a zero or one integer solution which indicates the states of the elements in the model The integer zero indicates that the modulus of the design element is zero and therefore the element is a candidate for deletion from the model to the original model The integer one leptesents no change in modulus value compared I and thus these design elements stay in the model. The developed approach can modify the inner and the outer shape of the structure without the need for a remeshing after each iteration and this reduces the computational time significantly. Design examples are provided to demonstrate the effectiveness of the proposed optimal design methodology and to illustrate the steps involved in this process.
AB - Tbis paper presents a methodology for the generation of fully stressed shape configuration design of struaures. An important aspect of this approach is the ability to rrìodify the topology element model Then the boundary shape of the object represented by a finite Therefore, features such as holes or slots can De added even though they as well as have not been part of the initial model. This work is based on altering the finite element structure by removing or restoring elements to generate fully stressed designs subject to constraints on maximum stress value and maintenance of connectivity between the elements. The algorithm tion process with the normalized elastic modul uses binary value integer programming for the discrete optimizamalized modulus of each design element selaied as des^ n variable. The optimization results consist of a zero or one integer solution which indicates the states of the elements in the model The integer zero indicates that the modulus of the design element is zero and therefore the element is a candidate for deletion from the model to the original model The integer one leptesents no change in modulus value compared I and thus these design elements stay in the model. The developed approach can modify the inner and the outer shape of the structure without the need for a remeshing after each iteration and this reduces the computational time significantly. Design examples are provided to demonstrate the effectiveness of the proposed optimal design methodology and to illustrate the steps involved in this process.
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U2 - 10.1115/DETC1994-0113
DO - 10.1115/DETC1994-0113
M3 - Conference contribution
AN - SCOPUS:85103553114
T3 - Proceedings of the ASME Design Engineering Technical Conference
SP - 61
EP - 68
BT - 20th Design Automation Conference
T2 - ASME 1994 Design Technical Conferences, DETC 1994, collocated with the ASME 1994 International Computers in Engineering Conference and Exhibition and the ASME 1994 8th Annual Database Symposium
Y2 - 11 September 1994 through 14 September 1994
ER -