Simulasi Karakteristik Akustik Menggunakan Aplikasi Metode Elemen Hingga Pada Material Komposit Hazelnut, Pineapple, Aluminium Yang Digunakan Sebagai Kampas Rem Pada Sepeda Motor

Abstract

Brake pads are an important factor in braking, so it is necessary to study the noise and acoustic characteristics of the brake pads using the acoustic simulation method to obtain sound pressure level results, determine the acoustic characteristics of the simulation, compare the noise results in the simulation with experimental testing. The simulated composite brake lining material uses a composition of hazelnut shell, pineapple leaf fiber, aluminum, polyurethane. Researchers used simulations with the application of the finite element method in the form of 3D modeling to analyze the parameters applied. The parameters are material data, mesh size, acoustic region, physics region, force, mass source. The simulation results of the acoustic characteristics of composite brake linings with a load of 500grams obtained a minimum noise at 500rpm rotation with a distance of 15cm of 3.88dB and the maximum noise occurs with a load of 750grams at 900 rpm rotation with a distance of 5cm of 11.54dB. The average sound pressure level value using the simulation method is smaller than the experimental method at 500rpm, 700rpm, 900rpm, a load of 500grams and 750grams, a distance of 5cm, 10cm, 15cm. This could be caused by parameters that were not included in the simulation, such as vibration on the test equipment, brake pad temperature, setup errors or calibration of experimental method measuring devices. The overall percent error of the simulation results at 500rpm, 700rpm, 900rpm, 500gram and 750gram loads, distances of 5cm, 10cm, 15cm, the result percent error are not up to 12%.