EXTRACTION-CONDENSATION METHOD FOR SOLVING LARGE SETS OF EQUATIONS IN FE ANALYSIS

来源 :Acta Mechanica Sinica | 被引量 : 0次 | 上传用户:pdscyz
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In static and dynamic analysis of a large complex structure,one may merely beinterested in the stresses and displacements at some important locations.A new solution techniquefor structural analysis with FEM is proposed in this paper by which those important unknowns areseparated from the rest.In static analysis the important unknows can be found directly.In dynamicanalysis all mass and exciting forces can be condensed onto a small number of predetermined pointsin order to make the dynamic analysis much simplified.A large scale problem can be solved with asmall capacity computer quickly. In static and dynamic analysis of a large complex structure, one may merely may be berested in the stresses and displacements at some important locations. A new solution technique for structural analysis with FEM is proposed in this paper by which those important unknowns areseparated from the rest. Static analysis the important unknows can be found directly. dynamic analysis all mass and exciting forces can be condensed onto a small number of predetermined points in order to make the dynamic analysis much simplified. A large scale problem can be solved with asmall capacity computer quickly.
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