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Acrylic is increasingly being used in structural engineering applications due to its characteristics of light weight, capability of bulk polymerization, and absence of self-destruction risk, compared to tempered glass. However, structural acrylic exhibits creep behavior when subjected to prolonged loading. In order to study the creep performance of structural acrylic base material and coupons connected using the bulk polymerization technique, short-term tensile tests and long-term creep tests were conducted, and the effect of annealing temperature controlled in the bulk polymerization process was considered. The results show that annealing temperature significantly affects the quality of bulk polymerization. The Burgers model accurately describes the viscoelastic behavior of acrylic, and the Prony series converted from the parameters in the Burgers model can be directly implemented in Abaqus and accurately simulates the creep behavior of acrylic. The equation proposed in this study, on the basis of the Findley model, is precise enough to predict the creep curves of acrylic base material and connecting coupons. The Time–Stress Superposition Principle is valid when the time is greater than the threshold value.
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; Liu, Yuhao 1
; Zhang Bailun 2 ; Wang, Yuanqing 3 ; Xiao Jianxia 4 ; Cheng, Wei 4 ; Huang, Ming 1 ; Song, Yulong 2 1 School of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; [email protected] (Z.W.); [email protected] (M.H.)
2 China Resources Land Limited, Shenzhen 518000, China; [email protected] (B.Z.); [email protected] (Y.S.)
3 Department of Civil Engineering, Tsinghua University, Beijing 100084, China; [email protected]
4 Donchamp (Jiangsu) Materials Technology Co., Ltd., Taixing 225442, China; [email protected] (J.X.); [email protected] (W.C.)