Prototyping Coupler LRT Skala Laboratorium

David, Ady Theo Louis (2019) Prototyping Coupler LRT Skala Laboratorium. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

LRT (Light Rail Transit) merupakan salah satu jenis kereta api penumpang urban yang konstruksinya ringan dan beroperasi di permukaan jalan. Salah satu bagian LRT yang digunakan untuk menyambungkan dua gerbong kereta ataupun trainset adalah coupler. Pada saat ini, LRT untuk Palembang masih menggunakan coupler kereta api. Dengan demikian, coupler kereta api menjadi over designed dan justru menambah berat dan kekakuan pergerakan LRT, yang mana pergerakan LRT dirancang lebih fleksibel dibandingkan dengan kereta api. Oleh karena itu, pengembangan coupler khusus menjadi sangat mendesak dan penting.
Metode penelitian ini memiliki tahapan penelitian yang terdiri dari pembuatan ulang desain coupler menggunakan software 3D, analisa mekanisme gerakan menggunakan simulasi motion analisis, pembuatan prototype menggunakan print 3D dan melakukan simulasi analisis statik struktural. Proses redesain coupler menambahkan sistem penguncian dengan mekanisme mekanik. Simulasi motion analysis dilakukan untuk memastikan kesesuaian tiap komponen terhadap mekanisme gerakan dan menghasilkan video animasi dari mekanisme gerakan tersebut. Simulasi analisis static structural dilakukan pada komponen plat penghubung, komponen penghubung antar coupler dan komponen pin penghubung antar coupler. Analisis tersebut dilakukan untuk mengetahui kekuatan masing-masing komponen coupler akibat beban operasi.
Dari hasil penelitian didapatkan model 3d redesain coupler menggunakan sistem pengunci otomatis dengan mekanisme mekanik. Terdapat tiga mekanisme utama dalam coupler yaitu mekanisme gerak penguncian coupler, mekanisme pengunci dengan mengadaptasi bentuk pengunci pintu dan mekanisme penggerak pengunci. Model tiga dimensi coupler LRT mempunyai 25 komponen yang terbagi menjadi tiga mekanisme gerak. Dari hasil simulasi statis yang dilakukan beban maksimum diterima oleh komponen penghubung dengan tegangan akibat beban tarik terbesar 282,58 MPa dan tegangan akibat beban tekan terbesar 294,52 MPa. Material AARM 201 grade D digunakan pada komponen plat penghubung dan komponen penghubung antar coupler dengan nilai faktor keamanan sebesar 1,98 pada pembebanan tekan sedangkan komponen lainnya menggunakan material S 316 grade L. Pembuatan prototype menggunakan printer 3 dimensi menggunakan skala 2 : 1. Material yang digunakan dalam proses pencetakan yaitu poly lactid acid (PLA).
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LRT ( light rail transit ) is one type of urban passenger train with light construction and operated in a road surface.One of LRT part that used to connect two coaches or trainset is a coupler. At the present time, Palembang LRT still use a common coupler. The coupler is over designed, It has too high in weight and stiffness, While the LRT design should be more flexible than the common train. Hence, the development of a special coupler for LRT become extremely urgent and important.
The methodology has research phases consisting of making the coupler design uses softwares, 3d analysis of the movement use motion analysis, building prototypes using 3d print and Structural static analysis simulation. Coupler redesign process add locking system with mechanical mechanism. Motion analysis conducted to ensure every component is well comform. The motion presented on a video that showed the mechanism gesture. Simulation analysis static structural performed on 3 parts. They are plate connectors, component linked couplers and component pin that linked couplers. This analysis conducted to determine the strength of each component due to the operation weight
The research generated new coupler 3d model which use an automatic mechanical lock. There are three main mechanisms which are coupler locking motion mechanism , mechanism which adapting the form of door locking system and driving force locking mechanism. Coupler 3D model have 25 components that divides into three mechanism motion. From the results of static simulation conducted the burden of maximum accepted by the component of liaison to voltage due to the burden of pull 282,58 mpa and voltage due to the burden of press 294,52 MPa. Material AAR M201 grade D used in components plate a liaison and links between a coupler with a value safety factor of 1.98 on the imposition of press while the other components use material S 316 grade L. Prototypes are built with 3D printer, using 2: 1 scale. Materials used for the process of printing namely poly lactid acid commanders .

Item Type:	Thesis (Undergraduate)
Additional Information:	RSM 625.21 Dav p-1 2019
Uncontrolled Keywords:	Coupler, FEM, Static Structural Analysis, Motion Study Analysis.
Subjects:	T Technology > TF Railroad engineering and operation T Technology > TJ Mechanical engineering and machinery T Technology > TJ Mechanical engineering and machinery > TJ230 Machine design
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis
Depositing User:	Ady Theo Louis David
Date Deposited:	26 Jan 2022 02:13
Last Modified:	26 Jan 2022 02:13
URI:	http://repository.its.ac.id/id/eprint/62053

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