The Procedure And Model Technology Analysis Of Pneumatic Membrane Structure

It is introduced the research development and basic character of the pneumatic membrane structure at first. The pneumatic membrane structure's no-linear analyse theory is systemically settled.Considered the no-linear character of the large-stress and small-strain,chosen three-point strain of plain stress triangle membrane unit triangle membrane unit and adopted the updating Lagrange increment expression, it is builded the no-linear finity unit analyse basic equation of pneumatic membrane structure at the base of geometry and physics conditions,given the solution of the equation group.The whole analysis process of pneumatic membrane structure includes the analysis of form-finding, loading and cutting-pattern.The analysis of form-finding firstly assumes the reasonable inter-pression and original-stress,the analysed form fulfiling the architect's request of the model and function. The analysis of loading reviews the working capability and normal using under all possible kinds of loading. Pneumatic membrane structure endure wind-load and snow-load those value ensured by the site according the loading criterion. The analysis of cutting-pattern is the key step of the whole analysis process of pneumatic membrane structure. It's nicety relates the analysis facticity of the form-finding and loading.if the analysis ot cutting-pattern is not right,the form under inter-pression is not the same as the form of form-finding and structure capability is not truly respond under loading. Adopting different of cutting-pattern of the same membrane,it is chosen the best of cutting-pattern by compared for improving the cutting-precision.From this,the three phase affects and contacts each other.Little wrong of the whole analysis process can lead the false of the analysis.So,It is adjusted the wrong in the process of the analysis,until fulfiling the request. At the base of two-dimension inertia theory, it is analysed the puff process of pneumatic model; with membrane no-quadrature theory, it is analysed space mechanics of pneumatic membrane structure. At last, the changing transent of it step by step at the process of puff is simulated by programe.Pneumatic membrane model technology is built at the theory of space plain, firstly setting up some simpleness pneumatic model monocase and handling the space analytic geometry means of flat-moving, circumrotating to formatting the needing complex model figure.With the knowledge of space analytic geometry and computer imitate,the space plain is dispersed as plain triangle, the information of triangle unit is put from meeting date and dissected the parameter to get the dispersed data.it is gotten the linked-line by the enclosed-box method.Combined plain...