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All Journal International Journal of Sustainable Transportation Technology
Santosa, Sigit
National Center for Sustainable Transportation Technology, Indonesia, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Indonesia
Automotive Engineering Control & Systems Engineering Engineering Industrial & Manufacturing Engineering Transportation

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Optimization of Bus Body Frame Structure for Weight Minimizing with Constraint of Natural Frequency using Adaptive Single-Objective Method Haryanto, Ismoyo; Raharjo, Fuad; Kurdi, Ojo; Haryadi, Gunawan; Santosa, Sigit; Gunawan, Leonardo
http://dx.doi.org/10.31427/IJSTT.2018.1.1.2
Publisher : Unijourn Publisher

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Abstract

The objective of this work is to analyze and optimize a bus frame structure using Finite Element Method in dynamic conditions. The bus body geometry was obtained directly from the three-dimensional Computer-Aided Design files. The optimization was conducted to determine the minimum weight of the bus frame structure without violating the specified natural frequency constraints. The design variable is the thickness of the bus body frame. In present study, Adaptive Single Objective method was chosen as an optimizer method. The results show that the structural weight of the bus frame can be reduced about 8% without changing its dynamic characteristic.
Development of Conceptual Design for Electric Bus Body Structure Using Simple Structural Surface Method Haryanto, Ismoyo; Widodo, Achmad; Satya, Ibrahim; Haryadi, Gunawan; Kurdi, Ojo; Budiman, Bentang; Santosa, Sigit
http://dx.doi.org/10.31427/IJSTT.2021.4.1.3
Publisher : Unijourn Publisher

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Abstract

An optimum design for a vehicle structure is always desired because the structure can significantly affect the vehicle's performance. However, some complex iterations are usually involved in the designing process. The objective of the present study is to implement the Simple Structural Surfaces (SSS) method for analyzing electric bus body structure that can reduce complexity in the stage of conceptual design. The SSS method model the vehicle structure as several planar sheets and determine the forces in each sheet. Implementing the SSS method at the early stage of the vehicle's development can minimize the number of parameter changes needed during the late stage of development. The results showed that compared with the results obtained from FEM, the SSS method gave the maximum stress value on the chassis in good accordance. Yet, the downside of using this method is that determining the deflections in the structure becomes a little bit complicated. Successfully implementing this strategy can reduce the time and cost required to develop an effective vehicle structure.
Co-Authors Achmad Widodo Budiman, Bentang Gunawan, Leonardo Haryadi, Gunawan Ismoyo Haryanto Ojo Kurdi Raharjo, Fuad Satya, Ibrahim