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Experimental study on mechanical properties of casting high-capacity polyurethane elastomeric bearings
Highlights CPUE was improved to replace rubber for casting high-capacity polyurethane elastomeric bearings. Material and bearing mechanical comparison between the two formulation were investigated. Bearing manufacturing process was disclosure and compared with rubber. CPUE bearings were designed and conducted series test follow the specifications.
Abstract The laminated elastomeric bearings are widely used structure isolation devices. However, the production and economic efficiency of current rubber bearings are limited by the long-time high-temperature vulcanization process. This study proposes the use of casting polyurethane elastomer (CPUE) substituting rubber in manufacturing laminated elastomeric bearings whilst considering the formula of conventional and improved shear performance formula. Mechanical properties, such as uniaxial tension, hysteretic shear and anti-peel strength, between the conventional and improved materials were compared, and the findings indicate that the use of block technology by introducing hydroxyl-terminated small molecular alcohol can improve the ultimate deformation and anti-peel ability. Moreover, 2 scale-reduced and 24 full-scale new bearings were employed to investigate their vertical compression and horizontal–lateral deformation ability considering different formulas and shape factors. Test results show that the CPUE bearings equipped large vertical bearing, favourable horizontal deformation and excellent energy dissipation capacity. The comparison between the two types of formulas suggest that the new formula can successfully increase the ultimate deformation and centralised failure mode at the expense of acceptable compression modulus decrease.
Experimental study on mechanical properties of casting high-capacity polyurethane elastomeric bearings
Highlights CPUE was improved to replace rubber for casting high-capacity polyurethane elastomeric bearings. Material and bearing mechanical comparison between the two formulation were investigated. Bearing manufacturing process was disclosure and compared with rubber. CPUE bearings were designed and conducted series test follow the specifications.
Abstract The laminated elastomeric bearings are widely used structure isolation devices. However, the production and economic efficiency of current rubber bearings are limited by the long-time high-temperature vulcanization process. This study proposes the use of casting polyurethane elastomer (CPUE) substituting rubber in manufacturing laminated elastomeric bearings whilst considering the formula of conventional and improved shear performance formula. Mechanical properties, such as uniaxial tension, hysteretic shear and anti-peel strength, between the conventional and improved materials were compared, and the findings indicate that the use of block technology by introducing hydroxyl-terminated small molecular alcohol can improve the ultimate deformation and anti-peel ability. Moreover, 2 scale-reduced and 24 full-scale new bearings were employed to investigate their vertical compression and horizontal–lateral deformation ability considering different formulas and shape factors. Test results show that the CPUE bearings equipped large vertical bearing, favourable horizontal deformation and excellent energy dissipation capacity. The comparison between the two types of formulas suggest that the new formula can successfully increase the ultimate deformation and centralised failure mode at the expense of acceptable compression modulus decrease.
Experimental study on mechanical properties of casting high-capacity polyurethane elastomeric bearings
Wang, Siqi (author) / Yuan, Yong (author) / Tan, Ping (author) / Zhu, Hongping (author) / Luo, Kaitao (author)
2020-08-23
Article (Journal)
Electronic Resource
English
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