Thermo-mechanic Field Finite Element Analysis And Structure Optimization Design Of Bag Filter

The structural design of the great Bag Filter is an important indicator to guarantee its working reliability. Also the simulative computation analysis of the structure of the Bag Filter based on Finite Element Method proved itself an effective avenue in analyzing the intensity, rigidity as well as the stability under various working conditions, which would be of instructional significance in engineering projects.In order to simplify the design and the simulation, the structure is substituted with equivalent uniform board in the thesis, and then the homogenization method and the finite element method is combined, and the effective mechanical properties of the periodically distributed circular holes are analyzed, and the influence of the radius and center distance of tubesheet holes on the effective mechanical properties are investigated respectively. Subsequently the thermo-mechanic coupled finite analysis of the structure of a great Bag Filter under various working load is carried out to analyze the influence of the working temperature and load on the strength of the Filter. Moreover, a reverse simulation is performed to achieve the best working load. Finally, the finite element model has been developed to implement the structure optimization design with discrete variables of bag filter based on the genetic algorithm. The algorithm treats the steel section as design variables and the total weight as the objective function. The restrain conditions such as strength, rigidity and stability are considered. The results show that the GA method is effective and feasible.