Dynamic Analysis And Optimum Design Of Tuss Structure Bridge Inspecting Vehicle

Bridge inspection vehicle equipped with bridge inspection equipment is a special-purpose vehicles for flow testing and maintenance operations bridge, which structural reliability has an important role of the detection efficiency and testing the safety of personnel.In this paper, the finite element method and sampling techniques to simulate the reliability for the calculation of bridge inspection vehicle boom structure in the multiple load cases institutions.Using Integration capabilities of iSight software to base bridge inspection vehicle boom system reliability optimization design.In this paper, the boom of16m truss bridge inspection vehicle for the study, firstly, using large-scale finite element software ANSYS to Establish boom system parametric model and do the necessary static analysis and modal analysis.Secondly, considering the boom structure in the design process, the material properties, processing size, load with stochastic volatility using ANSYS PDS module do reliability analysis.Using the Monte Carlo method in Latin sampling method (LHS) to calculate the main failure mode of each link and running board on the boom system reliability.Using the secondary approximation functions with no terms to fit the response surface.The results show that the two similar results of simulated sampling to confirm the results are close to the real results.The method for large and complex structural system reliability analysis provides a more practical approach.Finally, using automation capabilitie of iSight software, with reliable indicator of the strength of the boom rod and walking board, rod stiffness, throughout the boom stiffness stability as a constraint to optimize the quality of the boom structure with the multi-island genetic algorithm.With the Reliability meeting certain conditions,the boom structure has the lightest weight, lowest cost, state-of-the-art technology.In this paper, with reliability constraints to optimize the bridge inspection vehicle boom.having satisfactory results, embodies the feasibility of this method. This method provides a reference for large-scale complex mechanical structures, it has a important theoretical and practical significance.The product achieves safe, reliable, durable appropriate, economical and reasonable, ensure quality, state-of-the-art technology requirements.