SUTRIMO, RIZKY FAJAR (2024) ANALISIS KEKUATAN SAFETY DEVICE PADA SAAT PERBAIKAN SILINDER LOADER UP DOWN MESIN CURING. S1 thesis, Universitas Mercu Buana Jakarta.
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Abstract
The curing machine is used to cook green tires (semi-finished tires) into tires (finished tires) which is done in a mold with temperature and pressure adjusted based on product specifications. In the curing machine there is a loader component which functions as a tool to help move the green tire from the front of the machine into the mold using an up down and in out working process with a hydraulic cylinder drive. While repairing the up-down loader cylinder by the tire company engineering team, a work accident occurred. The loader fell due to movement when releasing the loader cylinder and the loader load which was hanging on the cam, because it was not strong enough to support the loader, the cam fell off followed by the loader dropping. So then the engineering team installed a safety device to withstand the load of the loader if something similar happened, but until now its strength has not been tested. The aim of this research is to analyze the strength of the safety device installed on the loader using calculation analysis and test simulations with Finite Element Analysis (FEA). The research began with collecting load data received by the safety device, then carrying out theoretical calculation analysis and simulations using Solidwork software. The bending stress that occurs in the safety device when holding the loader load is 63,30 N/mm2 and the shear stress is 5.105 N/mm2. Meanwhile, for the strength of the welded joint, based on the results that have been obtained, the maximum allowable load on the vertical and horizontal plate welded joints is amounting to 155,6 kN + 268,45 kN = 404,05 kN while the actual load received by the welded joint is 6806.891 N. So it can be stated that the welded joint is safe. Loading simulations using Solidwork software obtained a von Mises stress value of 57,279 N/mm2, a maximum deformation value of 0.036 mm, and an FOS value of 4,365. Safety loaders with ASTM A36 material are declared safe because the FOS value is > the safety factor value based on static load. Mesin curing digunakan untuk memasak green tire (ban setengah jadi) menjadi tire (ban jadi) yang dilakukan didalam mold dengan temperatur dan tekanan yang disesuaikan berdasarkan spesifikasi produk. Pada mesin curing terdapat komponen loader yang berfungsi sebagai alat bantu memindahkan green tire dari depan mesin ke dalam mold dengan proses kerja up down dan in out dengan penggerak silinder hidrolik. Pada saat perbaikan silinder loader up down oleh tim engineering perusahaan ban pernah terjadi kecelakaan kerja. Loader tersebut anjlok yang disebabkan adanya pergerakan pada saat pelepasan silinder loader dan beban loader yang tergantung pada nok, karena tidak kuat menahan beban loader maka nok lepas diikuti anjloknya loader. Sehingga kemudian tim engineering memasang safety device untuk menahan beban loader jika terjadi hal serupa, namun sampai saat ini belum diuji kekuatannya. Tujuan dari penelitian ini adalah menganalisis kekuatan safety device yang terpasang pada loader tersebut dengan menggunakan analisis perhitungan dan simulasi pengujian dengan Finite Element Analysis (FEA). Penelitian diawali dengan pengumpulan data beban yang diterima safety device kemudian dilakukan analisis perhitungan secara teori dan simulasi dengan software solidwork. Tegangan bending yang terjadi pada safety device pada saat menahan beban loader adalah 63,30 N/mm2 dan tegangan gesernya 5,105 N/mm2 Sedangkan untuk kekuatan sambungan las berdasarkan hasil yang telah didapatkan bahwa beban maksimal yang diijinkan pada sambungan las plat vertikal dan horizontal tersebut adalah sebesar 155,6 kN + 268,45 kN = 424,05 kN sedangkan beban aktual yang diterima oleh sambungan las adalah sebesar 6806,891 N. Maka dapat dinyatakan bahwa sambungan las aman. simulasi pembebanan menggunakan software solidwork didapatkan nilai von mises stress sebesar 57,279 N/mm2, nilai deformasi maksimal 0,036 mm, dan nilai FOS 4,365. Safety loader dengan material ASTM A36 dinyatakan aman karena nilai FOS> dari nilai faktor kemanan berdasarkan beban statis.
| Item Type: | Thesis (S1) |
|---|---|
| Call Number CD: | FT/MSN. 24 116 |
| NIM/NIDN Creators: | 41322120005 |
| Uncontrolled Keywords: | Curing, Loader, Safety Device, Solidwork, FEA |
| Subjects: | 600 Technology/Teknologi > 620 Engineering and Applied Operations/Ilmu Teknik dan operasi Terapan 600 Technology/Teknologi > 620 Engineering and Applied Operations/Ilmu Teknik dan operasi Terapan > 621 Applied Physics/Fisika terapan > 621.8 Machine Engineering, Machinery/Teknik Mesin |
| Divisions: | Fakultas Teknik > Teknik Mesin |
| Depositing User: | ANANDA NADIRA PUTRI |
| Date Deposited: | 19 Sep 2024 04:40 |
| Last Modified: | 19 Sep 2024 04:40 |
| URI: | http://repository.mercubuana.ac.id/id/eprint/91564 |
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