Research On Reliability Of Truss Structure Based On Complex Network Theory

Truss structure is widely used in bridge,gymnasium,station and other large span structures,because it has the advantanges of light weight,reasonable stress,beautiful app earance and low cost.Truss structure service life and reliability of structural system are related,however,the research on the reliability of the structural system covers many disciplines,so the research progress of structural system reliability is very slow.With the rapid development of complex network theory,complex network theory has been w idely used in the field of social interpersonal relationship network,virus propagation ne twork,ransportation network,financial network,information network,power network,comple x network theory is an effective tool for research and analysis that the people from t he point of view of system on a variety of practical networks.The truss structure is si milar to those practical networks,this paper the reliability research of truss structure is carried out by referring to the relevant knowledge of the complex network theory.In this paper,the following several aspects are studied:1.Firstly,by establishing unweighted network model based on the topological characteristics of truss structure,using special network analysis software Pajek of unweighted network model analysis,truss structure in the unweighted network models in each node of the center of the parameters,to find a key component of the truss structure.Then by quantifying the influence of each node toward the network effieiency in the unweighted network model according to bypothesising t each node were failure of truss structure in the unweighted network model,analysis of each node were failure of the entire network effects from the point of view of system.2.According to the topological characteristics to building the unweighted network model of truss structure,which is different from the normal working state of the truss structure.In order to construct a network model which is more in line with the normal working state of the truss structure,this paper attempts to introduce the knowledge point of structure energy flow network.We can build the directed network model of truss structure based on the energy flow network of truss structure.3.Considering the differences between the various components of the truss structure to establish a weighted network model of truss structure on the basis of the directed network model of truss structure.Calculateing the reliability index of each component in the truss structure with Monte Carlo and ANSYS software,the average reciprocal of reliability index of the two node is used for the edge weight,and then the network effieiency of weightednetwork models are calculated when the reliability of each component is improving,the key nodes in weighted network model of truss structure,quantifying the influence of the reliability of each node is improving toward the network effieiency in the weighted nerwork model from the point of view of system.