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【期刊论文】Structural responses to non-uniformly modulated evolutionary random seismic excitations
林家浩
,-0001,():
-1年11月30日
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林家浩, J. H. LIN, W. Y. CHE, Y. S. YU
CAS Vol. 15, No. 5-8,-0001,():
-1年11月30日
In this paper, a bi-factor a-β algorithm based on the Kuhn-Tucker criteria about the minimal weight design of a structure under statical and dynamical constraints, is presented. Among the constraints, that of “frequency-prohibited band” is a new formulation which requires any characteristic frequency of the structure not to fall into a certain frequency region. The desing variables may cover sizes of the elements and/or coordinates of the nodes. The upper and lower bounds of each variable are specified, and the stress constraints based on full-stress criteria may also be taken into account. Satisfactory results have been obtained over varous examples wherein the stiffness and/or mass matrices of the structure may be highly nonlinear about the design variables.
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