Finite Element Analysis And Structural Optimization Design Of Large Cover

Covering is widely applicated in the engineering and product design,large covering parts not only can protect the internal structure of product,and have a high plasticity on the structure model,it is very prevail among the design staff.Most covering parts in the life is thin plate structure,so this paper is mainly study about the sheet covering parts structure.Because large covering parts is fragile and vulnerable to external force,so it is easy to be deformated and bended.So how to control the deformation of covering parts and without increase the weight of it is difficult.It need reasonable design the structure of the covering parts.In generally,to improve the strength of the covering parts,the shape and strengthen structure the two aspects should be in consider.Condition complexity and diversity of stiffener plate is a big problem for designers.How to control the multivariables optimally,the article will depend on basic theory and finite element software to go on a further studied about the optimization of sheet covering.(1)Take a simple calculation by using the mechanics knowledge,calculate the deflection of plate and shell under the load of external force without reinforcement.Then have a certain qualitative analysis of the plate and shell,and providing theoretical basis for covering parts design.Furthermore,the influence degree of each size parameter of the sheet on the maximum deflection of the plate is obtained and provides the size optimization suggestions to improve the thin plate bending strength.(2)According to the mechanics theory,deduces four edges simply supported plate under arbitrary equivalent load deflection of exact solutions,and then use MATLAB to programming,deduces the formula of the precision of the program are discussed,compare the results with the ANSYS simulation results.(3)Using the MATLAB program to mesh intensity zoning on the thin plate and drawing,and the graphics provides guidance for the reinforcement distribution.With the help of ANSYS and ANSYS Workbench,Solidworks launched a study of sheet structure,and discusses the optimum structure of thin plate and get design size of a sheet covering.The conclusions provide a optimization Suggestions to sheet covering parts.(4)Apply the results of study on the distribution of reinforced ribs and the reinforcing rib structure optimization to large covering parts of CT.Compare large panel after optimization with the original CT covering the flexural strength and the volume of contrast,obtained a conclution that the optimized reinforcement performance effect is significantly increased.