Analisis Torsional Rigidity, Efek Jacking, dan Kekuatan Chassis Go-kart Akibat Beban Belok

Wibisana, Yulian Dwi Satria (2018) Analisis Torsional Rigidity, Efek Jacking, dan Kekuatan Chassis Go-kart Akibat Beban Belok. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Dalam berkompetisi, go-kart dituntut mampu lincah saat berbelok. Namun, differential gear dan sistem suspensi ditiadakan dalam komponen standar perlombaan. Padahal komponen ini berpengaruh pada performa belok kendaraan. Kedua fungsi komponen tersebut dikompensasi melalui chassis go-kart yang didesain, tidak hanya kuat menahan beban. Namun chassis juga harus cukup fleksibel (khususnya terkait kekakuan torsional). Go-kart memanfaatkan efek jacking dari chassis dalam meningkatkan kemampuan berbeloknya. Oleh karena itu, penelitian kali ini bertujuan melihat hubungan kekakuan torsional dari chassis go-kart dengan efek jacking yang mampu dihasilkan dalam kondisi pembebanan aktual. Analisa chassis tersebut akan dilakukan dengan menggunakan metode elemen hingga. Di mana tiga model chassis go-kart akan diberikan pembebanan torsional dan juga pembebanan belok. Pada pembebanan torsional, chassis akan diberikan beban torsional sehingga akan menghasilkan besar torsional rigidity yang menggambarkan nilai kekakuan chassis tersebut. Kemudian, simulasi pembebanan belok akan digunakan untuk mengetahui jacking dan karakter kekuatan dari chassis tersebut. Selain itu, beban pengereman yang terjadi saat berbelok juga akan dianalisa efeknya pada jacking dan kekuatan chassis. Setelah simulasi dan analisis telah dilakukan. Maka, hasil memperlihatkan bahwa chassis tony kart merupakan chassis yang paling fleksibel daripada chassis lainnya dengan torsional rigidity 188,6 Nm/deg, dan chassis birell merupakan chassis yang paling kaku dengan torsional rigidity 277,7 Nm/deg. Dan chassis arrow berada di tengah dengan torsional rigidity 243,75 Nm/deg. Setelah diteliti diketahui bahwa semakin fleksibel chassis akan mempermudah terjadinya efek jacking pada kendaraan. Kemudian, kekuatan chassis yang paling baik dimiliki oleh go-kart dengan tipe chassis arrow. Sementara itu, beban pengereman dengan jarak pengereman 3 meter dan perlambatan 20,8 m/s2 saat berbelok didapatkan membuat go-kart lebih mudah mengalami jacking (rata-rata kenaikan jacking 67 %). Namun, beban ini dapat membuat tegangan maksimal yang diterima chassis bertambah (rata-rata kenaikan tegangan maksimal 21 %). =========================================================================================================== During competition, go-karts are demanded to be agile in turns. Differential gear and suspension systems are omitted in standard components of the race. The Components are important for turning performance. Both functions are compensated through a specially designed go-kart chassis. Go-kart is designed not only to resist the load but also must be flexible enough (especially related to torsional rigidity). Go-kart utilizes the jacking effect of the chassis to enhancing its turning ability. Therefore, this study aims to look at the torsional rigidity of the go-kart chassis with the jacking effect that can be produced under actual loading conditions. The chassis analysis will be performed using the finite element method. three go-kart chassis models will be given torsional loading and also the turning loading. In torsional loading, the chassis will be given a torsional load so that it will produce the value of torsional rigidity that describes the chassis rigidity. Then, the turning load simulation will be used to determine the jacking and strength characteristics of the chassis. In addition, braking load that occur during the turn will also be analyzed for the effect on jacking and chassis strength. After simulation and analysis have been done. Thus, the results show that the tony kart chassis is the most flexible chassis of any chassis with a torsional rigidity of 188.6 Nm/deg. The birell chassis is the most rigid chassis with a torsional rigidity of 277.7 Nm/deg. The arrow chassis is in the middle with torsional rigidity 243,75 Nm/deg. After the analysis, it is known that the flexibility of the chassis will facilitate the occurrence of jacking effects on the vehicle. Then, the best chassis strength is owned by go-kart with chassis arrow type. Meanwhile, the braking load with 3 meters of braking distance and 20.8 m/s2 braking acceleration when the turn is obtained makes the go-kart more susceptible to jacking (average 67% jacking increase). However, this load can make the maximum stress received by the chassis is increasing (average maximum stress increase of 21%).

Item Type: Thesis (Undergraduate)
Additional Information: RSM 629.242 Wib a-1 3100018077251
Uncontrolled Keywords: Go-kart, Chassis, Deformasi, Tegangan Von Mises, Jacking, Safety Factor, Metode Elemen Hingga.
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA347 Finite Element Method
T Technology > TA Engineering (General). Civil engineering (General) > TA645 Structural analysis (Engineering)
Divisions: Faculty of Industrial Technology > Mechanical Engineering > 21201-(S1) Undergraduate Thesis
Depositing User: Yulian Dwi Satria Wibisana
Date Deposited: 18 Nov 2020 05:08
Last Modified: 04 Dec 2020 06:08
URI: https://repository.its.ac.id/id/eprint/55428

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