無機填料的型號來改善硅烷改性聚氨酯密封膠...
2026-04-13
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反映結(jié)構(gòu)硅烷改性聚氨酯密封膠的力學(xué)行為
- 發(fā)布時間 : 2026-4-11 18:00:49
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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.
反映結(jié)構(gòu)硅烷改性聚氨酯密封膠的力學(xué)行為
(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 : 2026-4-11 18:00:49
- Views:
Information
為采用ABAQUS建立的啞鈴型試件的有限元模型，材料參數(shù)C,設(shè)為0.241，啞鈴型試件中間截面尺寸為6mm X 2mm(寬度X厚度)。采用六面體單元進行離散，并通過逐步加密網(wǎng)格進行試算，當網(wǎng)格劃分尺寸大小1 mm時，進一步減小尺寸計算結(jié)果變化小于2%，因此本文所采用的網(wǎng)格劃分方案能夠滿足計算精度要求。試件的邊界條件模擬實際拉伸試驗的約束方式，固定右端，限制其X, Y, Z方向上的位移約束，并在左端施加位移。
為有限元計算所得二一E曲線和試驗所得結(jié)果的對比。計算結(jié)果表明，雖然不同試件的試驗結(jié)果具有一定的離散性，但是，5個試驗的平均結(jié)果和有限元結(jié)果基本一致。以試驗結(jié)果為精確值，有限元計算結(jié)果的平均相對誤差為4.22%，這表明采用式(1)可以較好地反映結(jié)構(gòu)硅烷改性聚氨酯密封膠的力學(xué)行為。
對于工字型試件，W/2從0.5增加到2.0，按0.1為增量建立16個有限元模型。圖11(a)為t=12mmwlt=2時的有限元模型。有限元模型的計算參數(shù)為:材料參數(shù)C1。為0.241，兩側(cè)玻璃片的彈性模量為70GPa，泊松比0.22。采用六面體單元進行離散，并通過逐步加密網(wǎng)格進行試算，當網(wǎng)格劃分尺寸大小1 mm時，進一步減小尺寸計算結(jié)果變化小于2%因此本文所采用的網(wǎng)格劃分方案能夠滿足計算精度要求。試件的邊界條件模擬實際拉伸試驗的約束方式，限制下端玻璃片X, Y, Z方向上的位移約束，并在上端玻璃片施加位移。
為結(jié)構(gòu)硅烷改性聚氨酯密封膠產(chǎn)生2.4mm位移時的變形圖，由圖可以看出，受邊界約束效應(yīng)影響，結(jié)構(gòu)硅烷改性聚氨酯密封膠的中間截面出現(xiàn)頸縮現(xiàn)象，這與工字型試件試驗變形比較一致。http://cs535.com/
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