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Synthèse modale d’opérateurs elliptiques du second ordre. (Component mode synthesis of second order elliptic operators). (French) Zbl 0685.47038
Summary: Component mode synthesis enables to compute the eigenelements of a differential operator on a domain composed of a union of subdomains on each of which the eigenelements of the same operator are assumed to be partially known. A new “fixed interface” method is presented which extends the Hurty, Craig and Bampton one. Error bounds are given in the case of second order operators on one- or two-dimensional domains.

47F05 General theory of partial differential operators (should also be assigned at least one other classification number in Section 47-XX)
35J15 Second-order elliptic equations