Analisis Pembebanan Statis Jig Silo Tank Pada Project Floor 7 Direxa Engineering

Dani, Ilham Akhmal (2025) Analisis Pembebanan Statis Jig Silo Tank Pada Project Floor 7 Direxa Engineering. Project Report. Institut Teknologi Sepuluh Nopember, Surabaya. (Unpublished)

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Abstract

PT. Boma Bisma Indra (Persero) merupakan perusahaan Badan Usaha Milik Negara (BUMN) yang bergerak di bidang rekayasa, manufaktur, dan fabrikasi komponen industri berskala besar, khususnya dalam mendukung sektor energi dan infrastruktur. Kegiatan magang industri dilaksanakan di Departemen Engineering PT. BBI dengan tugas khusus berupa analisis pembebanan statis pada struktur Jig silo tank yang digunakan pada Project Floor 7 PT Direxa Engineering. Jig tersebut berfungsi sebagai elemen pendukung struktural selama proses fabrikasi dan pemasangan silo tank, namun desain yang digunakan merupakan desain lama yang belum tervalidasi secara numerik sehingga berpotensi mengalami deformasi struktural akibat beban mati, beban hidup, maupun beban tambahan akibat aktivitas kerja pada area platform. Analisis dilakukan melalui dua pendekatan, yaitu perhitungan manual berdasarkan prinsip mekanika teknik dan simulasi numerik menggunakan metode elemen hingga (Finite Element Analysis/FEA) dengan perangkat lunak ANSYS 2024 R2, mengacu pada standar ASME Section VIII Division 1 dan ASME Section II Part D dengan material SS400 (yield strength 245 MPa). Hasil perhitungan manual menunjukkan tegangan normal maksimum sebesar 64,140 MPa, defleksi sebesar 0,4567 mm, dan faktor keamanan sebesar 3,81, sedangkan hasil simulasi FEA menunjukkan tegangan von Mises maksimum sebesar 122,4 MPa, defleksi maksimum sebesar 1,84 mm, dan faktor keamanan sebesar 2,00. Kedua hasil tersebut masih berada dalam batas aman, karena nilai defleksi jauh di bawah ambang batas lendutan yang disyaratkan (L/250 = 20 mm) dan nilai faktor keamanan berada di atas batas minimum yang disarankan (1,5). Berdasarkan hasil tersebut, dapat disimpulkan bahwa struktur Jig silo tank layak dan aman digunakan dalam proses fabrikasi, dengan catatan diperlukan inspeksi dan kontrol kualitas yang lebih ketat pada titik-titik sambungan utama.
Kata kunci: Jig silo tank, analisis pembebanan statis, Finite Element Analysis, ANSYS, faktor keamanan, SS400.
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PT. Boma Bisma Indra (Persero) is a state-owned enterprise (BUMN) engaged in engineering, manufacturing, and fabrication of large-scale industrial components, particularly in support of the energy and infrastructure sectors. The industrial internship was carried out in the Engineering Department of PT. BBI, with a special assignment focusing on the static loading analysis of the Jig silo tank structure used in the Floor 7 Project of PT Direxa Engineering. This jig functions as a structural support element during the fabrication and installation of the silo tank; however, the design in use was an older design that had not been numerically validated, raising concerns about potential structural deformation due to dead loads, live loads, and additional loads arising from work activities on the platform area. The analysis was carried out using two approaches, namely manual calculation based on engineering mechanics principles and numerical simulation using the Finite Element Analysis (FEA) method with ANSYS 2024 R2 software, referring to the ASME Section VIII Division 1 and ASME Section II Part D standards, with SS400 material (yield strength of 245 MPa). The manual calculation results show a maximum normal stress of 64.140 MPa, a deflection of 0.4567 mm, and a safety factor of 3.81, while the FEA simulation results show a maximum von Mises stress of 122.4 MPa, a maximum deflection of 1.84 mm, and a safety factor of 2.00. Both results remain within safe limits, as the deflection value is well below the required deflection threshold (L/250 = 20 mm) and the safety factor exceeds the recommended minimum value (1.5). Based on these results, it can be concluded that the Jig silo tank structure is feasible and safe for use in the fabrication process, with the recommendation that stricter inspection and quality control be applied at the main joint points.

Item Type:	Monograph (Project Report)
Uncontrolled Keywords:	Jig silo tank, static loading analysis, Finite Element Analysis, ANSYS, safety factor, SS400
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) T Technology > TS Manufactures > TS171 Product design T Technology > TS Manufactures > TS176 Manufacturing engineering. Process engineering (Including manufacturing planning, production planning)
Divisions:	Faculty of Vocational > Mechanical Industrial Engineering (D4)
Depositing User:	Ilham Akhmal Dani
Date Deposited:	08 Jul 2026 04:19
Last Modified:	08 Jul 2026 04:19
URI:	http://repository.its.ac.id/id/eprint/134465

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