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BIW modal optimization with traditional FEM method was inefficiency and usually with much mass increase. FEM analysis combined with Multi-objective Optimization method was used to improve the first order frequency of BIW. Mathematic model was built by response surface method to replace FEM model and NSGA-II was used to get non-dominated solutions. During the optimization plates with high relative...
Taking multiple parameters of the main structural plates thicknesses and loads as random design variables, the strength reliability of bogie frame is analyzed based on response surface optimization approach and JC method. The response surface optimization approach is used to search the failure points of the structure limit state. Meanwhile, the sensitivity of structure reliability is also analyzed...
Article will introduce the sensitivity into frame optimization analysis of the heavy-duty truck. Established the frame finite element model in a certain type of heavy truck, determined the boundary conditions and loads, and verified the electrical test. Select the frame rails and the beams as a sensitivity analysis of the object. According to the results of the analysis to select the design variables,...
In this paper a method which applies Six Sigma and goal driven to the fuzzy multi-objective optimization of the sliding rack is presented. This method applies Six Sigma analysis to construct the fuzzy set of sensitivity to determine the optimal group of fuzzy design variables. Then make use of the method of goal driven to realize the fuzzy multi-objective optimization. The results show that fuzzy...
According to the Pro/Mechanica analysis platform, by the finite element analysis method, the actual mold honeycomb molded forces, boundary conditions and imposed load in the view of the molded honeycomb mold for the actual operating conditions leading to die due to stress concentration fatigue failure, the reliability of the problem of insufficient. Through the analysis to determine the maximum stress...
The research of autobody lightweight technology is an important mainstream in the autobody design. In this paper A FEM model for the unitary body of a home-made bus is established .Then optimization design variables are determined through stiffness sensitivity analysis and by using finite element analysis software, an optimization is conducted, based on which a lightweighting scheme is put forward...
Parylene nanomechanical cantilevers with integrated piezoresistors were proposed for biochemical sensing based on surface-stress measurement. By using polymer as the cantilever material, the sensitivity is significantly increased. Simultaneously, parylene piezoresistive cantilevers exhibit different behaviors compared with their more rigid counterparts. Therefore new design guidelines need to be developed...
A finite element model for a domestic car-body is built. Based on the stiffness criterion, the stiffness sensitivity of the whole auto-body structure parts are analyzed under torsion and bending loads. Based on the results, the design of the structure and dimension of the body parts is optimized and the stiffness and sensitivity of the whole body is proved to be more reasonable. The Uniform Design...
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