Research On Key Questions Of Nonlinear Calculation Substructure Hubred Simulation Mothod

Hybred Simulation Mothed is a kind of economic, logical and experimental mothed. It is a mothed that isolates the significant sections out of the structure as test substructure and then conduct the experiment in the labs. Other sections are regarded as numerical substructure calculated by computers and completed by corresponding control coordinator coordinating the data transmission among various substructures. Numerical substructure under the circumstance of nonlinear is able to sharply diminish the scale of test substructures, which is still in the stage of primary study. This dissertation conducts a further study upon a plurality of essential issues respectively that the mixed simulation methods would face in the case of nonlinear numerical substructure:In the first place, the study upon the interface issue between compiler software and finite element software: Utilizing the overwhelming nonlinear managing functions as well as open-source characteristics from OpenSees and powerful matrix calculating functions and affluent application toolkit functions from the compiler software, Matlab realizes the interface function between Matlab and OpenSees by programming.Afterwards, aimed at the urgent interface problems of known nonlinear numerical substructure. Utilize curved structures as an example and then a predicting method of getting rid of iterated interfacial angle is put forward. By means of conducting a numerical simulation research upon heterogeneous structures of linear numerical substructure, the feasibility of this method is testified and it could be utilized into the known structural model of nonlinear numerical substructure, resulting in the mixed simulation test method is realized under the circumstance of known linear substructures.At length, the study around constitutive parameter identification is conducted. Based on the characteristics of homogeneous designs, the method to improve it is put forward. When it is applied to the test methods based on constitutive identification, the mixed simulation test method of nonlinear numerical substructure is utterly achieved.