Mathematical Model Establishment of Prefabricated Hole Flange-Forming of Unequal Diameter Tee Pipe

Abstract

Based on the principle that in the deformation zone the length of bore plain wire does not change, a mathematical model of the prefabricated hole flange-forming of unequal diameter tee pipe is established, for the difficult problem of the flange-forming prefabricated hole size design for tee pipe. To solve the mathematical model, a numerical method and a software system for The solution of the mathematical model is established. In order to verify the reliability of this article to build the mathematical model and its solution, taking engineering for example, apply the method of finite element simulation to verify the mathematical model and the solving system, and the results show that the mathematical model constructed in this paper can relatively accurately make calculation of prefabricated hole size of flange-forming of unequal diameter tee pipe.

Application of Fuzzy Mathematics in Physique Comprehensive Evaluation of College Students

“…But because of various reasons, we don't collect relevant information of the national physique based on the national physique monitoring. On the other hand, with the development of the continuous improvement of social productivity and the economic, more people begin to pay close attention to the physical and mental health and they begin to comprehend that the physical health is a vital aspect of the national comprehensive quality and that the physical fitness play a crucial role in the personal development [4] . Now there are a lot of researches about the evaluation of physical fitness and health both at home and abroad, such as document to calculate the correlation coefficient between each evaluation index of physical health by mathematical statistic method according to the height and standard weight group and document to set up the evaluation index system of physical monitoring through the facilities index, the sustaining system environment index, the comprehensive management index and the physical and mental constructs evaluation index [5] .…”