SIMULASI GETARAN CAKRAM REM MOBIL AKIBAT FREKUENSI NATURAL MENGGUNAKAN METODE ELEMEN HINGGA

Faiz Haqqani Amri; Pancatatva Hesti Gunawan;

SIMULASI GETARAN CAKRAM REM MOBIL AKIBAT FREKUENSI
NATURAL MENGGUNAKAN METODE ELEMEN HINGGA

Faiz Haqqani Amri

Penelitian ini bertujuan untuk menganalisis karakteristik dinamis cakram rem mobil akibat frekuensi
natural menggunakan Metode Elemen Hingga (MEH). Simulasi dilakukan dengan perangkat lunak
Ansys Workbench untuk mengidentifikasi frekuensi natural dan menganalisis bentuk mode getaran
beserta deformasi yang terjadi. Hasil simulasi menunjukkan bahwa enam mode getaran pertama
cakram rem teridentifikasi dengan rentang frekuensi natural dari 831,7 Hz hingga 1774,8 Hz.
Ditemukan fenomena mode ganda pada frekuensi rendah (831,7 Hz dan 831,97 Hz), yang
mengindikasikan adanya simetri struktural. Analisis bentuk mode menunjukkan bahwa deformasi
maksimum sebagian besar terkonsentrasi pada tepi luar cakram, dengan nilai puncak tertinggi
mencapai 21,242 mm pada Mode 4 (1172,7 Hz). Pola deformasi menjadi semakin kompleks seiring
dengan peningkatan frekuensi.
Kata kunci: frekuensi natural, deformasi, cakram rem, bentuk mode, ANSYS

SIMULATION OF CAR BRAKE DISC VIBRATION DUE TO NATURAL
FREQUENCY USING FINITE ELEMENT METHOD

Faiz Haqqani Amri

This research aims to analyze the dynamic characteristics of car brake discs due to their natural
frequencies using the Finite Element Method (FEM). Simulations were conducted using Ansys
Workbench software to identify natural frequencies and analyze the corresponding mode shapes
and deformations. The simulation results indicate that the first six vibration modes of the brake disc
were identified, with natural frequencies ranging from 831.7 Hz to 1774.8 Hz. A phenomenon of
repeated roots (double modes) was observed at low frequencies (831.7 Hz and 831.97 Hz),
indicating structural symmetry. Analysis of the mode shapes reveals that maximum deformation is
predominantly concentrated at the outer edge of the brake disc, with the highest peak value reaching
21.242 mm at Mode 4 (1172.7 Hz). The deformation patterns become increasingly complex with
increasing frequency. This data regarding natural frequencies and deformation patterns is crucial
for understanding the potential for resonance and vibration-related issues such as brake squeal or
judder. This study concludes that the brake disc possesses natural frequencies that could potentially
interact with operational excitation frequencies, necessitating consideration in design to mitigate
vibration problems.
Keywords: natural frequency, deformation, brake disc, mode shapes, ANSYS