Analisis Ketahanan Fatigue pada Chassis Mobil Prototype Diesel Senapati Tim Tawang Alun

Abstract

The development of vehicles in Indonesia using efficient fuel is one of the efforts to reduce the use of vehicle fuel. Technologies related to fuel-efficient vehicles are used to minimize the use of non-renewable fuels, one of the realizations is by organizing the Energy-Saving Car Contest (KMHE). Mobil Irit Tawang Alun is a community of mechanical engineering students at the University of Jember that focuses on developing energy efficient cars. Fatigue is a form of failure that occurs in structures from dynamic stresses. Fatigue testing of the chassis is needed to determine the period for repair/maintenance and to determine the period for repair or serviceability of the chassis. The finite element method divides a structure into elements that are connected at nodes. This process produces several simultaneous algebraic equations which will be solved using polynomial interpolation. This study uses variables: 1) independent: aluminum 6061 material and aluminum 7075 material, 2) bound: equivalent von mises stress, fatigue life, fatigue damage, and safety factor, 3) control: support and constant load.