Optimization Design&Performance Analysis On The Family Refuge Chamber

The family refuge chamber as a refuge facility in a sudden accident, which canprovide a safe and secure space for refuge staff to resist damage from outsideeffectively. The cabin is the main structure of the family refuge chamber, and itsstructural design and seismic performance are the top priority of the study on thefamily refuge chamber. This paper describes the background of the research and thetheory progress on the family refuge chamber firstly, and then the new structure of thechamber has been designed, finally the optimization design and analysis ofanti-seismic performance of the chamber are analyzed in theory.Firstly, combined with the results of structural statics analysis, the structures ofthe chamber are designed preliminary. The static stiffness and strength of thepreliminary structures are analyzed by using finite element analysis software to obtainthe stress and deformation cloud images. Through analyzing and evaluating the resultsof the statics analysis, the maximum deformation and the maximum stressconcentration of the cabin are obtained under the pressure of0.1MPa, which canprovide a theoretical basis for the subsequent optimization design and parametersettings.Secondly, optimization design of the cabin structure is analyzed based on thestatics analysis. According the principle of optimizing and of the actual situation of thefamily refuge chamber, the mathematical model is designed, and the objective function,the state variables and constraints are established. The impact of the maximumdisplacement, the maximum stress and quality on the cabin are analyzed with differentvariables by using Pro/E and AWE co-simulation optimization. The mechanicalproperties of the cabin are analyzed comparatively, and the results show that thestiffness and strength are improved.Then, numerical analysis and calculation on the bulkhead structures before andafter optimization are analyzed by using modal analysis and transient dynamic analysismethods, and compare the results to analyze the design optimization effect onanti-seismic performance. Through the modal analysis, the natural frequency of the chamber is obtained, which can avoiding the the occurrence of resonance harm. By thetransient dynamic analysis, the situation when the seismic load loading on the chamberis simulated, which can obtain that the acceleration and displacement of theoptimization design is reduced effectively.Finally, the linear buckling analysis on the optimized chamber is analyzed toforecast its theoretical buckling strength. Through the linear buckling analysis, thecritical load of the family refuge chamber is calculated, which can help to avoid thebuckling pressure and the occurrence of structural instability.In summary, the structural design of the family refuge chamber is designed firstly,then the static analysis on the cabin structure is simulated. Under the basis of theseanalysis the structure of the family refuge chamber is optimized. At last, the modalanalysis, transient dynamic analysis and buckling analysis on the chamber before andafter optimization are simulated by the finite element software, to discuss theanti-seismic performance and structural stability of the family refuge chamber, whichcan provide theoretical support for the future research in this field.