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The Design and Structural Optimization of the U-diaphragm for Diaphragm Pump

Author: ZhengYingChen
Tutor: ZhangShengChang；DengHongYing
School: Zhejiang University of Technology
Course: Chemical Process Equipment
Keywords: U-shaped diaphragm Deflection Structural optimization Nonlinear
CLC: TH323
Type: Master's thesis
Year: 2009
Downloads: 61
Quote: 0
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Abstract


In this paper, \with a U-shaped diaphragm ; Given the current U-shaped diaphragm design based on blank paper with ANSYS, First-Optimization, Matlab and other software, the movement of the diaphragm on the U-shaped deformation , cavity size changes , deformation and stress distribution of a more comprehensive analytical studies aimed at exploring U-shaped diaphragm deformation theory and engineering design methods. The main research work includes : 1. Proposes a new diaphragm with diaphragm - U -type diaphragm. (2) to establish a U-shaped diaphragm deflection mathematical equations . Finite element analysis software ANSYS to establish U-shaped diaphragm axisymmetric model and simulate the component test, post-processing to extract the U-shaped diaphragm displacement data , and apply First-Optimization, Matlab and other software for data processing, to obtain U- diaphragm at different compression , tensile deformation under the corresponding deflection curve, and fitting out of its mathematical equations , summed up the movement of deflection . 3 U-shaped diaphragm work deduced cavity formula. U-shaped cavity volume of the diaphragm pump the size of the main performance parameters - flow closely related , this U-shaped diaphragm by the motion analysis parameters deduced diaphragm structure as a function of cavity volume relationship for the diaphragm with the U diaphragm cavity design and its work to provide a theoretical basis for calculation . 4 Establish a U-shaped diaphragm deflection of working stresses simplified model . Through the U-shaped diaphragm boundary conditions analyzed, four-point hypothesis , while using ANSYS software to establish a simplified model of the U-shaped diaphragm for stress calculation , and with the same conditions of stress distribution plate diaphragm contrast ; analyzed U-shaped diaphragm at different load displacement characteristics of stress distribution . 5 . Proposed U-shaped diaphragm optimization. Through the U- shape of the diaphragm to optimize the design , the U-shaped diaphragm in the work process , to withstand the maximum displacement of the load , reduces the overall stress , and the inner and outer surface of the stress distribution , and to prevent stress concentration .

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CLC: > Industrial Technology > Machinery and Instrument Industry > Pump > Volume of the pump > Diaphragm
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