Properties and Design of Engine Mounting Rubber Automotive As Damper for Building Retrofitting

Characterization rubber tests were conducted for rubber materials of engine mounting rubber (EMR), to measure the parameters density (ρ), ultimate tensile strength (σ), elongation at break, and hardness (Shore A). Static and dynamic tests were carried out with several experimental methods for EMR as a damper system, from two brands, namely V-M and V-H. All rubber specimens had average tensile strengths between 16 and 17 MPa. The rubber can expand by 358.33 to 480 percent during the elongation break test, and the V-M rubber shows greater than the V-H, indicating that it is the softest and most elastic rubber. Seven variants of EMRand fifteen designs of damper developed from variety brands, dimensions, and the amount of EMR rubber. The V6 single rubber (V6-S) variant was selected from the most optimal previous stages test with 201.91 N/mm of stiffness and 9.237% of damping ratio at shaking table test. The hysteretic curve generated by experimental modeling on the proposed damper, both on the scaled model and on the prototype, can be represented in constitutive behavior on a numerical model with the appropriate elastoplastic damper parameters.