發(fā)布時間：2018-05-29 01:29

  本文選題：鋼化玻璃面板 + 破裂外因　； 參考：《浙江工業(yè)大學》2017年碩士論文

【摘要】：目前,市場上的燃氣灶具面板多采用不銹鋼和鋼化玻璃兩種材質(zhì),由于鋼化玻璃面板具有美觀大方、易清洗、耐腐蝕等優(yōu)點,因而更受廣大用戶的青睞。然而鋼化玻璃由于其材質(zhì)的特殊性,自爆現(xiàn)象不絕于耳。究其原因,可歸納為內(nèi)因和外因:內(nèi)因是指玻璃成型過程中本身所存在的質(zhì)量問題,包括原片玻璃中存在的Si、NiS雜質(zhì)、氣泡以及微裂紋等等;外因則是指燃氣灶的設(shè)計不合理,具體表現(xiàn)為:(1)燃氣灶底殼和燃燒器的設(shè)計;(2)鋼化玻璃面板結(jié)構(gòu)尺寸的設(shè)計。而對于不同結(jié)構(gòu)尺寸的面板,破裂情況卻千差萬別。因此,開展玻璃面板結(jié)構(gòu)尺寸對面板破裂傾向的影響研究具有很強的現(xiàn)實意義。本文以“玻璃面板的結(jié)構(gòu)尺寸”為關(guān)注點,利用ANSYS的概率設(shè)計系統(tǒng)PDS以面板所受的最大應力為輸出變量,以玻璃面板的長度、寬度、厚度、爐頭孔開孔大小及位置為輸入變量,分別從玻璃面板尺寸設(shè)計、精度加工和批量生產(chǎn)的角度進行了敏感性分析。主要工作及結(jié)論如下:1、利用ANSYS對玻璃面板在使用過程中的狀況進行熱-結(jié)構(gòu)耦合,獲得面板的溫度、應力分布;結(jié)果表明面板達到熱平衡時的最高溫度為187.5℃,最大應力為71MPa,位置均在爐頭孔邊緣。2、通過實驗,獲得了面板在使用過程中各測點的應力、溫度和變形數(shù)據(jù),并與模擬進行了對比;結(jié)果表明4個溫度測點不論是在趨勢上還是在數(shù)值上均與模擬有很高的吻合度;4個應力測點在趨勢上與模擬保持一致,數(shù)值上的相對誤差均控制在20%以內(nèi);5個變形測點除某一點外均與模擬類似;從而驗證了模擬的準確性。3、對于面板的尺寸設(shè)計,將各尺寸變量在各自基礎(chǔ)上變化1/1000,發(fā)現(xiàn)面板的厚度、爐頭孔半徑、寬度和長度4個變量對最大應力有影響,敏感度依次為-0.723,-0.539,0.176,0.104;因此,在尺寸的設(shè)計過程中,應重點關(guān)注面板的厚度和爐頭孔半徑的設(shè)計,同時兼顧面板的長度和寬度的設(shè)計,且盡量使得爐頭孔半徑、面板厚度處于較大值,面板的長度和寬度處于較小值。4、對于嚴格控制誤差上下限的精確加工,對最大應力有影響的變量為面板的厚度、爐頭孔半徑、寬度、爐頭孔中心距面板下邊緣距離、爐頭孔中心距面板左邊緣距離這5個參數(shù),敏感度依次為-0.628,-0.289,0.280,0.142,0.126;所以,在加工過程中,面板的厚度加工最為重要。5、在玻璃面板批量生產(chǎn)的條件下,對最大應力有影響的4個變量為爐頭孔半徑、爐頭孔中心距面板左邊緣距離、爐頭孔中心距面板下邊緣距離、面板的寬度,敏感度依次為-0.234,0.216,-0.117,0.072;因此,在運輸過程中,應該注意爐頭孔半徑和爐頭孔中心距面板左邊緣距離的保護。
[Abstract]:At present, the gas cooker panel on the market uses two kinds of stainless steel and tempered glass. Because the tempered glass panel has the advantages of beautiful, easy to clean, and corrosion resistance, it is more favored by the vast number of users. However, because of the particularity of its material, the tempered glass has the phenomenon of self explosion. The reason can be summed up as internal and external reasons. Cause: internal cause refers to the quality problems that exist in the process of glass forming, including Si, NiS impurities, bubbles and micro cracks in the original glass, and the external cause is the design of gas cooker. (1) design of gas range shell and burner; (2) design of structural size of tempered glass panel. Therefore, it is of great practical significance to study the influence of the structure size of the glass panel on the fracture tendency of the panel. This paper takes "the structure size of the glass panel" as the focus, and uses the probability design system of ANSYS to design the PDS with the maximum stress as the output variable, with the glass panel. The length, width, thickness, the size and position of the opening hole of the head hole are input variables, and the sensitivity analysis is carried out from the angle of glass panel size design, precision machining and mass production. The main work and conclusion are as follows: 1, the thermal structure coupling of the glass panel in the use process is carried out by ANSYS, and the temperature and stress of the panel are obtained. The results show that the maximum temperature of the panel reaches 187.5 degrees C and the maximum stress is 71MPa, and the position is.2 at the edge of the furnace head. Through the experiment, the stress, temperature and deformation data of each test point in the use process are obtained and compared with the simulation. The results show that the 4 temperature measurements are in the trend or in the number of the numbers. The values are in good agreement with the simulation; the 4 stress measurement points are consistent with the simulation, and the relative error of the numerical values is controlled within 20%. The 5 deformation points are similar to the simulation except some point. Thus, the accuracy of the simulation is verified by.3, and the size variables of the panel are changed on the basis of 1/1000 for the size of the panel. It is found that the thickness of the panel, the radius of the hole, the width and the length of the 4 variables have an influence on the maximum stress, and the sensitivity is -0.723, -0.539,0.176,0.104. Therefore, in the design process of the size, the thickness of the panel and the radius of the head hole should be focused on, and the design of the length and width of the panel is taken into consideration, and the hole of the furnace head is half as possible as possible. The thickness of the panel is at a large value, the length and width of the panel are in a small value.4. For the precise control of the accuracy of the upper and lower limits of the error, the variables affecting the maximum stress are the thickness of the panel, the radius and width of the head hole, the distance from the center of the head hole to the lower edge of the panel, and the distance between the center of the hole of the furnace head and the left edge of the panel. In the process of processing, the thickness of the panel is the most important.5. Under the condition of the batch production of the glass panel, the 4 variables that affect the maximum stress are the radius of the hole of the furnace head, the distance from the center of the furnace head to the left edge of the panel, the distance from the center of the head hole to the lower edge of the panel, the width of the panel. The sensitivity is -0.234,0.216 and -0.117,0.072 in sequence. Therefore, during the transportation process, we should pay attention to the protection of the distance between the hole radius of the furnace head and the distance from the center edge of the furnace head to the left edge of the panel.
【學位授予單位】：浙江工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TQ171.732;TS914.232

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