A 3D numerical model based on finite differences is proposed to predict the degree of vulcanization of a Fiber Reinforced Elastomeric Isolator FREI constituted by five EPDM pads and four GFRP laminas interposed between contiguous pads. EPDM used is composed by 2/3 of regenerated rubber and 1/3 of virgin rubber. A prototype is cured at 130°C for 40 minutes and shore A hardness is measured in the central cross section on two points, the first located in the middle, the second near the comer. It is found that the crosslinking density obtained is suboptimal (but still acceptable for an engineering point of view) and that it is required to increase the vulcanization temperature to 150°C to obtain a full and homogeneous curing.
Numerical Simulations of the Vulcanization Process of a Low Cost Elastomeric Seismic Isolator
Milani G.;Habieb A. B.;
2022-01-01
Abstract
A 3D numerical model based on finite differences is proposed to predict the degree of vulcanization of a Fiber Reinforced Elastomeric Isolator FREI constituted by five EPDM pads and four GFRP laminas interposed between contiguous pads. EPDM used is composed by 2/3 of regenerated rubber and 1/3 of virgin rubber. A prototype is cured at 130°C for 40 minutes and shore A hardness is measured in the central cross section on two points, the first located in the middle, the second near the comer. It is found that the crosslinking density obtained is suboptimal (but still acceptable for an engineering point of view) and that it is required to increase the vulcanization temperature to 150°C to obtain a full and homogeneous curing.| File | Dimensione | Formato | |
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2022_ICNAAM2020_AIP_Mil_Mil_Hab_Cer.pdf
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