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MS密封膠不同吸濕度和不同應變率下的單軸拉伸
- 發布時間 : 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.
- 發布時間 : 2023-3-30 12:02:58
- Views:
根據MS密封膠不同吸濕度和不同應變率下的單軸拉伸試驗結果,對方程(4.21)兩邊取對數,由拉伸強度與吸MS密封膠濕度和應變率的變化關系,可作出In[sinh(affP)-lne和In〔sinh(a6p)000/HD的函數關系圖,如圖4.1“和圖4.1”所示。分別通過線性擬合的方法,獲得材料常數}Z(HD)vq)。同理,利用公式(4.9)的誤差分析方法對吸濕度變化狀態下拉伸強度的試驗結果與預測結果進行分析,如表4.13所示。從表4.13可以看出,將溫度項替換成吸濕度項后,吸濕度變化狀態下的拉伸強度函數的模擬結果良好,不需要對應變率進行修正。該函數表達式更適合預測吸濕度和應變率相關的拉伸強度。拉伸強度對應的應變函數己知上述溫度和應變率的應變函數。為了獲得吸MS密封膠濕度和應變率狀態下的應變函數,同樣利用公式(4.20,即修正后的Zener-Hollomon參數方程來表達吸MS密封膠濕度和應變率相關的拉伸強度對應的應變函數:其中,可和ba是材料常數。根據MS密封膠不同吸濕度下的單軸拉伸試驗結果,對方程(4.25)兩邊取對數,由拉伸強度對應的應變和吸濕度的變化關系,可作出l}戶1nZ之間的關系圖,如圖4.20所示。通過線性擬合的方法,獲得材料常數a和bm表4.14是吸MS密封膠濕度和應變率相關的拉伸強度對應的應變函數的材料常數。表4.14拉伸強度對應的應變函數的材料常數(吸濕度條件下)材料常數數值因此,吸MS密封膠濕度和應變率相關的拉伸強度對應的應變函數為:同樣,進行誤差分析,如下表4.15所示。從表4.15可以看出,將溫度項替換成吸濕度項后,吸濕度變化狀態下的拉伸強度對應的應變函數的模擬結果良好。表明該函數表達式在用于預測吸MS密封膠濕度和應變率相關的拉伸強度對應的應變時,比預測溫度和應變率相關的拉伸強度對應的應變更準確。表4.15吸濕度變化狀態下拉伸強度對應的應變試驗結果和預測結果的相對誤差彈性影響函數和粘性影響函數己知溫度和應變率相關的本構模型,粘一彈性影響函數與溫度和應變率有關。為了研究吸MS密封膠濕度和應變率對模型彈性模量非線性化的影響,將溫度和應變率相關的影響函數n(T,E)和B(T,E),替換成吸MS密封膠濕度和應變率相關的影響函數}(HD,E)和B(HD,約?赏ㄟ^下式(4.27)對吸MS密封膠濕度和應變率敏感的材料參數進行求解:通過各個應變率和吸濕度下,20%,40%,60%,80%和100%處的應變與其對應的應力之間的關系,對方程(4.27)兩邊取對數,得出Inap,一,)-ln的關系圖,如圖4.21所示。通過線性擬合,獲得函數隨吸MS密封膠濕度和應變率的變化情況。www.www.lustload.com
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