探究防突環(huán)數(shù)量b對丁基防水嵌縫膠膠筒密封的影響

發(fā)布時間 : 2025-6-4 10:09:17
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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.

探究防突環(huán)數(shù)量b對丁基防水嵌縫膠膠筒密封的影響

(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)布時間 : 2025-6-4 10:09:17
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確定開矩形槽后，分別選擇開槽數(shù)量a為2,4,6,8，對防突環(huán)開槽數(shù)量對丁基防水嵌縫膠膠筒應力的影響進行了分析，結(jié)果如圖所示。圖表示丁基防水嵌縫膠膠筒軸向接觸壓力沿路徑的變化，可知軸向最大接觸壓力在前2個丁基防水嵌縫膠膠筒，說明靠近加載端的接觸壓力較大，并且開槽數(shù)a=4時軸向接觸壓力最大。圖給出了圖中A處的圓周方向的接觸應力分布，其圓周最小密封壓力大體呈先增大后減小的趨勢，在開槽數(shù)a=4時最小密封壓力達到最大值46. 5 MPa。圖表示的是開槽數(shù)a=4時不同時間段丁基防水嵌縫膠膠筒的軸向接觸壓力變化以及丁基防水嵌縫膠膠筒的變形，可以看出曲線大體呈駝峰狀變化趨勢。這是因為施載端的接觸壓力大于遠離加載端的接觸壓力，當=0.2 s時丁基防水嵌縫膠膠筒與套管內(nèi)壁剛開始接觸，接觸應力很小，所以接觸壓力曲線趨近于一條直線;當:=1s時，丁基防水嵌縫膠膠筒的橡膠已經(jīng)填滿套管內(nèi)壁與丁基防水嵌縫膠膠筒之間的空隙，丁基防水嵌縫膠膠筒充分與套管內(nèi)壁接觸，此時軸向接觸壓力達到62 MPa。圖表示的是圖中不同時間段接觸應力最大處的圓周接觸應力分布，在加載的過程中，隨著時間的遞增，接觸壓力也遞增。綜合圖結(jié)果，可知選擇開槽數(shù)量a=4最為合理防哭環(huán)數(shù)量的影響。

在確定防突環(huán)材料和開槽個數(shù)的基礎上，探究了防突環(huán)數(shù)量b對丁基防水嵌縫膠膠筒密封的影響。防突環(huán)數(shù)量決定了其塑性和變形程度，因此分別對防突環(huán)數(shù)量為1,2,3時對丁基防水嵌縫膠膠筒密封的影響進行了有限元分析，結(jié)果如圖所示。從圖中可以看出，防突環(huán)數(shù)量為2和3時最小密封壓力差別很不明顯，密封效果相差不大。圖表示在整個加壓過程中丁基防水嵌縫膠膠筒的壓縮距離變化，防突環(huán)數(shù)量為2和3時壓縮距離幾乎相等，防突環(huán)數(shù)量為1時壓縮距離最大。因此綜合圖中結(jié)果，防突環(huán)數(shù)量b為2和3密封性能接近，但考慮節(jié)約材料成本等因素選擇b=2更合適。http://pingjia100.com/

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