Faradila, Dwiyanti Aigistin (2024) Redesign Suspensi Leaf Spring pada Truk Tronton PT Semen Indonesia Logistik dengan Penambahan Tinggi Chamber untuk Meningkatkan Ketahanan Umur Suspensi. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Sistem suspensi terdiri dari pegas dan peredam yang dapat memberikan keamanan kendaraan dan pengendara. Pada kendaraan truk komersil, keamanan dan ketahanan umur dari penggunaan suspensi menjadi hal yang utama, tak terkecuali pada Truk Tronton yang dimiliki PT Semen Indonesia Logistik. Berbagai kasus kerusakan suspensi dikarenakan kelebihan muatan, sehingga available life dari suspensi dapat dibilang kecil. Maka dari itu, diperlukan redesign desain suspensi yang sudah ada menyesuaikan dengan muatan dan profil jalan yang dilalui. Profil jalan yang digunakan adalah impuls berupa bump yang memiliki tinggi 0,1 m dan lebar 0,25 dengan kecepatan 25 km/jam. Redesign dilakukan dengan perubahan desain dari desain suspensi yang sudah ada yaitu chamber 125 mm dengan penambahan tinggi chamber 10, 20, 30, dan 40 mm pada suspensi menjadi 135, 145, 155, dan 165 mm.
Pada penelitian tugas akhir ini dilakukan simulasi menggunakan software ANSYS. Simulasi dilakukan pada model yang sebelumnya didesain menggunakan software Solidworks. Simulasi dilakukan menggunakan static structural, fatigue tool, dan modal analysis. Sebelum simulasi, dilakukan uji unsur material terlebih dahulu dan hasil dari uji tersebut digunakan untuk mengetahui jenis material serta mechanical propertiesnya. Kemudian, dilakukan simulasi juga menggunakan software simulink MATLAB untuk mengetahui defleksi maksimum suspensi.
Berdasarkan simulasi yang telah dilakukan, didapatkan desain suspensi yang memiliki nilai kekuatan yang aman untuk menahan beban muatan truk adalah suspensi dengan penambahan tinggi chamber 20, 30, dan 40 mm dengan nilai safety factor>2. Selain itu, semakin tinggi penambahan tinggi chamber maka semakin efektif pula suspensi dalam meningkatkan ketahanan umurnya terhadap beban siklik yang terjadi secara terus menerus dengan muatan berlebih truk. Pada penelitian ini didapatkan bahwa peningkatan umur yang paling tinggi dimiliki suspensi dengan penambahan tinggi 40 mm yaitu memiliki peningkatan available life sebesar 96×1010 hours dari suspensi original pada titik amplitudo 50%. Pada simulasi MATLAB, berdasarkan variasi yang diteliti, baik suspensi original dan penambahan tinggi chamber 10, 20, 30, dan 40 mm merupakan jarak yang aman dan tidak terjadi adanya tumbukan. Maka dari itu, berdasarkan pertimbangan kekuatan suspensi dalam menahan tegangan, available life dan faktor tumbukan suspensi dengan penambahan tinggi chamber 20, 30 dan 40 mm direkomendasikan kepada PT Semen Indonesia Logistik.
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The suspension system consists of springs and dampers that can provide vehicle and rider safety. In commercial truck vehicles, safety and longevity from the use of suspension are the main thing, including the Tronton Truck owned by PT Semen Indonesia Logistik. Various cases of suspension damage are due to overload, so the available life of the suspension can be said to be small. Therefore, it is necessary to redesign the existing suspension design according to the load and profile of the road being passed. The road profile used is an impulse in the form of a bump which has a height of 0.1 m and a width of 0.25 with a speed of 25 km/h. Optimization is carried out by changing the design of the existing suspension design, namely the 125 mm chamber with the addition of 10, 20, 30, and 40 mm chamber heights to 135, 145, 155, and 165 mm in the suspension.
In this final project research, simulations were carried out using ANSYS software. Simulations were carried out on models that were previously designed using Solidworks software. The simulation was carried out using static structural, fatigue tools, and modal analysis. Before the simulation, a material element test is carried out first and the results of the test are used to determine the type of material and its mechanical properties. Then, simulations were also carried out using MATLAB simulink software to determine the maximum deflection of the suspension.
Based on the simulations that have been carried out, it is found that the suspension design that has a safe strength value to withstand the load of the truck is a suspension with an additional chamber height of 20, 30, and 40 mm with a safety factor value>2. In addition, the higher the increase in the height of the chamber, the more effective the suspension will be in increasing its life resistance to cyclic loads that occur continuously with truck overloads. In this study, it was found that the highest increase in life was owned by the suspension with an increase in height of 40 mm, which had an increase in available life of 96×1010 hours from the original suspension at the 50% amplitude point. In the MATLAB simulation, based on the variations studied, both the original suspension and the addition of 10, 20, 30, and 40 mm chamber heights are safe distances and no collisions occur. Therefore, based on the consideration of suspension strength in resisting tension, available life and suspension impact factor with additional chamber heights of 20, 30 and 40 mm, it is recommended to PT Semen Indonesia Logistik.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Available Life, Tinggi Chamber, Suspensi Leaf Spring, Available Life, High Chamber, Leaf Spring Suspension |
| Subjects: | T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL257 Springs and suspension |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | Dwiyanti Aigistin Faradila |
| Date Deposited: | 12 Aug 2024 02:20 |
| Last Modified: | 12 Aug 2024 02:20 |
| URI: | http://repository.its.ac.id/id/eprint/114027 |
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