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MS密封膠不同吸濕度和不同應(yīng)變率下的單軸拉伸
- 發(fā)布時(shí)間 : 2023-3-30 12:02:58
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(Summary description)Customized SILICONE STRUCTURAL SEALANT from China manufacturer refers to the adhesive with high strength, can bear large load, aging resistance, fatigue resistance and corrosion resistance, and has stable performance within the expected life. It is suitable for bearing the bonding of strong structural parts. Non structural adhesive has low strength and poor durability. It can only be used for bonding, sealing and fixing of ordinary and temporary properties, and cannot be used for structural adhesive bonding. NEUTRAL SILICONE WETHERPROOF SEALANT from China manufacturer is a structural adhesive with waterproof function. Silicone glue refers to the adhesive based on silicone rubber. According to different functions, it can be divided into structural adhesive, potting adhesive, sealant, thermal conductive adhesive, flame retardant adhesive and so on.
MS密封膠不同吸濕度和不同應(yīng)變率下的單軸拉伸
(Summary description)Customized SILICONE STRUCTURAL SEALANT from China manufacturer refers to the adhesive with high strength, can bear large load, aging resistance, fatigue resistance and corrosion resistance, and has stable performance within the expected life. It is suitable for bearing the bonding of strong structural parts. Non structural adhesive has low strength and poor durability. It can only be used for bonding, sealing and fixing of ordinary and temporary properties, and cannot be used for structural adhesive bonding. NEUTRAL SILICONE WETHERPROOF SEALANT from China manufacturer is a structural adhesive with waterproof function. Silicone glue refers to the adhesive based on silicone rubber. According to different functions, it can be divided into structural adhesive, potting adhesive, sealant, thermal conductive adhesive, flame retardant adhesive and so on.
- 發(fā)布時(shí)間 : 2023-3-30 12:02:58
- Views:
根據(jù)MS密封膠不同吸濕度和不同應(yīng)變率下的單軸拉伸試驗(yàn)結(jié)果,對(duì)方程(4.21)兩邊取對(duì)數(shù),由拉伸強(qiáng)度與吸MS密封膠濕度和應(yīng)變率的變化關(guān)系,可作出In[sinh(affP)-lne和In〔sinh(a6p)000/HD的函數(shù)關(guān)系圖,如圖4.1“和圖4.1”所示。分別通過(guò)線性擬合的方法,獲得材料常數(shù)}Z(HD)vq)。同理,利用公式(4.9)的誤差分析方法對(duì)吸濕度變化狀態(tài)下拉伸強(qiáng)度的試驗(yàn)結(jié)果與預(yù)測(cè)結(jié)果進(jìn)行分析,如表4.13所示。從表4.13可以看出,將溫度項(xiàng)替換成吸濕度項(xiàng)后,吸濕度變化狀態(tài)下的拉伸強(qiáng)度函數(shù)的模擬結(jié)果良好,不需要對(duì)應(yīng)變率進(jìn)行修正。該函數(shù)表達(dá)式更適合預(yù)測(cè)吸濕度和應(yīng)變率相關(guān)的拉伸強(qiáng)度。拉伸強(qiáng)度對(duì)應(yīng)的應(yīng)變函數(shù)己知上述溫度和應(yīng)變率的應(yīng)變函數(shù)。為了獲得吸MS密封膠濕度和應(yīng)變率狀態(tài)下的應(yīng)變函數(shù),同樣利用公式(4.20,即修正后的Zener-Hollomon參數(shù)方程來(lái)表達(dá)吸MS密封膠濕度和應(yīng)變率相關(guān)的拉伸強(qiáng)度對(duì)應(yīng)的應(yīng)變函數(shù):其中,可和ba是材料常數(shù)。根據(jù)MS密封膠不同吸濕度下的單軸拉伸試驗(yàn)結(jié)果,對(duì)方程(4.25)兩邊取對(duì)數(shù),由拉伸強(qiáng)度對(duì)應(yīng)的應(yīng)變和吸濕度的變化關(guān)系,可作出l}戶1nZ之間的關(guān)系圖,如圖4.20所示。通過(guò)線性擬合的方法,獲得材料常數(shù)a和bm表4.14是吸MS密封膠濕度和應(yīng)變率相關(guān)的拉伸強(qiáng)度對(duì)應(yīng)的應(yīng)變函數(shù)的材料常數(shù)。表4.14拉伸強(qiáng)度對(duì)應(yīng)的應(yīng)變函數(shù)的材料常數(shù)(吸濕度條件下)材料常數(shù)數(shù)值因此,吸MS密封膠濕度和應(yīng)變率相關(guān)的拉伸強(qiáng)度對(duì)應(yīng)的應(yīng)變函數(shù)為:同樣,進(jìn)行誤差分析,如下表4.15所示。從表4.15可以看出,將溫度項(xiàng)替換成吸濕度項(xiàng)后,吸濕度變化狀態(tài)下的拉伸強(qiáng)度對(duì)應(yīng)的應(yīng)變函數(shù)的模擬結(jié)果良好。表明該函數(shù)表達(dá)式在用于預(yù)測(cè)吸MS密封膠濕度和應(yīng)變率相關(guān)的拉伸強(qiáng)度對(duì)應(yīng)的應(yīng)變時(shí),比預(yù)測(cè)溫度和應(yīng)變率相關(guān)的拉伸強(qiáng)度對(duì)應(yīng)的應(yīng)變更準(zhǔn)確。表4.15吸濕度變化狀態(tài)下拉伸強(qiáng)度對(duì)應(yīng)的應(yīng)變?cè)囼?yàn)結(jié)果和預(yù)測(cè)結(jié)果的相對(duì)誤差彈性影響函數(shù)和粘性影響函數(shù)己知溫度和應(yīng)變率相關(guān)的本構(gòu)模型,粘一彈性影響函數(shù)與溫度和應(yīng)變率有關(guān)。為了研究吸MS密封膠濕度和應(yīng)變率對(duì)模型彈性模量非線性化的影響,將溫度和應(yīng)變率相關(guān)的影響函數(shù)n(T,E)和B(T,E),替換成吸MS密封膠濕度和應(yīng)變率相關(guān)的影響函數(shù)}(HD,E)和B(HD,約。可通過(guò)下式(4.27)對(duì)吸MS密封膠濕度和應(yīng)變率敏感的材料參數(shù)進(jìn)行求解:通過(guò)各個(gè)應(yīng)變率和吸濕度下,20%,40%,60%,80%和100%處的應(yīng)變與其對(duì)應(yīng)的應(yīng)力之間的關(guān)系,對(duì)方程(4.27)兩邊取對(duì)數(shù),得出Inap,一,)-ln的關(guān)系圖,如圖4.21所示。通過(guò)線性擬合,獲得函數(shù)隨吸MS密封膠濕度和應(yīng)變率的變化情況。www.kubee.cn
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