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- 發(fā)布時間 : 2026-4-11 17:59:08
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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.
不同厚度結(jié)構(gòu)丁基防水嵌縫膠約束效應影響的研究
(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 17:59:08
- Views:
Information
為三個典型寬厚比工字型試件應力一應變曲線。工字型丁基防水嵌縫膠在單軸拉伸過程中存在較大的非線性，采用式(2)線性回歸后的應變，應力一等效應變曲線接近于線性;2)二一E的斜率與寬厚比相關，寬厚比越大，斜率越大。這是因為工字型丁基防水嵌縫膠隨著寬厚比的增大，工字型丁基防水嵌縫膠的與玻璃片接觸面積逐漸增大，邊界約束效應也逐漸增強。根據(jù)JG/T475-2015規(guī)范的試驗處理方法，依據(jù)二一s得到45個不同寬厚比試件的Ko。圖8為不同寬厚比、/t試驗所得KolE,的散點圖。從這個試驗結(jié)果看，KolE,的都大于1，且隨著、/t的增大而增大，這表明工字型丁基防水嵌縫膠的邊界約束效應導致初始剛度模量增大，且邊界約束效應與、/t具有一定的線性相關性。將試驗結(jié)果采用線性擬合可得:式(5)的擬合結(jié)果表明，寬厚比從0.5變化至2.0剛度比增加了0.579，增長率超過30%，這是因為工字型丁基防水嵌縫膠隨著寬厚比的增大，工字型丁基防水嵌縫膠的與玻璃片接觸面積逐漸增大，邊界約束效應也逐漸增強。如果忽略寬厚比對剛度的影響，直接以w/t=1的試驗結(jié)果進行計算，隨著寬厚比的增大或減小，初始剛度模量的相對誤差的絕對值會逐漸增大，當寬厚比等于2的時候相對誤差將近20%。式(5)是t=12mmw/tE[0.5,2范圍內(nèi)的擬合結(jié)果。而實際工程結(jié)構(gòu)丁基防水嵌縫膠的設計厚度通常在6-12mm范圍內(nèi)。為構(gòu)建更大適用范圍的邊界約束效應對初始剛度模量影響的計算公式。下面首先對試驗的啞鈴型和工字型試件進行數(shù)值模擬分析，驗證本構(gòu)模型和邊界約束效應計算模型的合理性。然后，進行不同厚度結(jié)構(gòu)丁基防水嵌縫膠約束效應影響的研究。對比式(1)和式(6)可以發(fā)現(xiàn)，當C,o=Eo/3時，兩個式子是相同的。因此，以表3所得Eo的平均值作為依據(jù)計算Cio，采用ABAQUS進行有限元計算。http://cs535.com/
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