Sensitivity Analysis Of Structure Size In Gas Cooker Toughened Glass Panel Based On ANSYS

The material of gas cooker panels are many made of stainless steel and toughened glass on the market at present.Toughened glass panels with the merit of elegant appearance,easy to clean and corrosion resistance is more popular with the consumer compare with stainless steel panel.However,due to the special material,the phenomenon of spontaneous breakage are endless in our ears.The reasons can be summarized as internal and external cause: the internal factors refers to the inherent quality problems in the glass forming process,including impurities Si and NiS,bubbles,micro cracks and so on existed in original glass;external cause is the unreasonable design of gas cooker,there are embodied in:(1)the design of bottom case and burner;(2)the design of structural size for toughened glass panel.But for different sizes of the panel,the rupture situation is much more dissimilar.Therefore,it is great significance to research the structural size of toughened glass panels impact on panel burst tendency.This article focuses on the structural size of glass panels,and make a sensitivity analysis on size design,processing and mass production with the maximum stress applied to the panel is the output variable;the length,width,thickness,the size and position of the opening burner hole as the input variable by ANSYS Probabilistic Design System.The main work and results are as follows:1?Making the thermal structure coupled analysis and get the stress and temperature distribution during use the panel by ANSYS;The results show that the maximum temperature is 187.5?and the maximum stress is 71 MPa when the panel reaches thermal equilibrium,and the position is all at the edge of burner hole.2?Geting the stress,temperature and deformation of each measuring point throughexperiment and verify the accuracy of the simulation after compared with it;The results show that the four temperature measurement points are consistent with the simulation in both the trend and the value;the four stress points are resemble to the simulation in the trend,and the relative errors is no more than 20%;the five deformation points are similar to simulations except one point.3?The variables that affect the maximum stress are the thickness of the panel,the radius of the burner hole,the wide and the length with change the size by 1/1000 on their original basis for the size design,the maximum sensitivity is-0.723,then followed by-0.539,0.176,0.104.Therefore,we should deeply concentrate on the design of the thickness and the radius of the burner hole and cosider the wide and length at the same time;Especially,it is necessary to make the radius of the burner hole and the thickness bigger,the length and width smaller under the permitting conditions in design.4?The variables that affect the maximum stress are the thickness of the panel;the radius of the burner hole;the wide;the distance from the lower edge of the burner hole and from the left edge of the burner hole at the accurate processing strictly controled the upper and lower error,the maximum sensitivity is-0.628,then followed by-0.289,0.280,0.142,0.126.Hence,the processing of thickness is the most important of all under this circumstance.5?The variables that affect the maximum stress are the radius of the burner hole,the distance from the left edge of the burner hole,the distance from the lower edge of the burner hole and the wide under the situation of mass production for the glass panel,the maximum sensitivity is-0.234,then followed by 0.216,-0.117,0.072.Thus,we should protect the radius of the burner hole and the distance from the left edge of the burner hole in transportation.