Analisis Pengaruh Variasi Material Terhadap Kekuatan Jack Pada Outrigger Mobile Tower Satu Ton Pendekatan Finite Element Method

Alfario, Selvario Setia (2026) Analisis Pengaruh Variasi Material Terhadap Kekuatan Jack Pada Outrigger Mobile Tower Satu Ton Pendekatan Finite Element Method. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Mobile tower salah satu infrastruktur telekomunikasi yang digunakan memperluas cakupan sinyal konektifitas pada area site. Untuk menjaga keseimbangan mobile tower menggunakan sistem outrigger. Salah satu komponen utama outrigger adalah jack sebagai tiang penahan dan distribusi beban ke permukaan tanah. Penelitian ini bertujuan untuk menganalisis pengaruh variasi material yaitu ASTM A36 sebagai material eksisting, serta dua material pembanding steel alloy dan AISI 1020 terhadap kekuatan struktur jack dengan pendekatan finite element method dengan variasi pembebanan. Pengumpulan data geometri dilakukan, selanjutkanya melakukan mencari rekasi gaya pembebana dengan free body diagram dan perhitungan persamaan kesetimbangan untuk selanjutnya dilakukan diinput data 3D modelling dan bounery condition untuk dilakukan simulasikan static structural dan eigenvalue buckling pada tiga variasi material dengan variasi pembebanan menggunakan software ANSYS. Hasil penelitian menunjukkan Material ASTM A36 diperoleh hasil nilai von mises stress sebesar 93,68 Mpa, displacement sebesar 1,4618 mm, dan factor of safety sebesar 2,66 pada beban variasi yang tertinggi 1,5 ton. Mengacu pada hasil tersebut maka material ASTM A36 masih dikatakan aman untuk diterapkan pada jack sebagai penopang mobile tower sampai pembebanan 1,5 ton. Material Alloy Steel menunjukkan respon struktur yang paling baik relative terhadap kedua material pembanding ASTM A36 dan AISI 1020 mengacu nilai parameter yang dihasilkan von mises stress sebesar 93,95 Mpa, nilai total displacement paling rendah sebesar 1,4120 mm, dan nilai factor of safety sebesar 4,41 pada pembebanan 1,5 ton. Material tersebut tercatat bahwa ketahanan kelelahan terbaik dengan evaluasi umur sebesar 1,6 ×1018 siklus , serta menunjukkan critical buckling load tertinggi, yaitu sebesar 1.604.211 N pada sumbu Y dan 1.645.371 N pada sumbu X.
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Mobile tower, one of the telecommunication infrastructures used to expand the coverage of connectivity signals in the site area. To maintain the balance of the mobile tower, an outrigger system is used. One of the main components of the outrigger is the jack as a retaining pole and the distribution of the load to ground level. This study aims to analyze the effect of material variations, namely ASTM A36 as an existing material, as well as two steel alloy and AISI 1020 comparison materials on the strength of the jack structure with a finite element method approach with load variations. Geometric data collection was carried out, followed by searching for load force repetition with free body diagrams and calculations of equilibrium equations to be further carried out with input 3D modelling and bounery condition data to simulate static structural and eigenvalue buckling on three material variations with load variations using software ANSYS. The results showed that ASTM A36 material obtained the results of a von mises stress value of 93.68 Mpa, a displacement of 1.4618 mm, and a factor of safety of 2.66 at the highest load of variation of 1.5 tons. Referring to these results, ASTM A36 material is still said to be safe to be applied to jacks as support mobile towers up to a load of 1.5 tons. Alloy Steel material shows the best structural response relative to both ASTM A36 and AISI 1020 comparison materials referring to the parameter value produced by von mises stress of 93.95 Mpa, the lowest total displacement value of 1.4120 mm, and the value of the safety factor amounting to 4.41 at a load of 1.5 tons. The material was recorded as having the best fatigue resistance with an evaluation of lifespan of, and showed the 1,6 × 1018 siklus highest critical buckling load, which was as large as on the 1.604.211 N at Y axis and on the X axis which is 1.645.371 N.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	AISI 1020, Alloy Steel, ASTM A36, Buckling, Displacement, Factor of Safety, Finite Element Method, Jack, Kekuatan, Mobile Tower, Outrigger, Von Mises Stress, Strength.
Subjects:	T Technology > T Technology (General) > T57.62 Simulation T Technology > T Technology (General) > T57.74 Linear programming T Technology > T Technology (General) > TA404 Materials--Biodegradation T Technology > TS Manufactures > TS171 Product design
Divisions:	Faculty of Vocational > Mechanical Industrial Engineering (D4)
Depositing User:	Selvario Setia Alfario
Date Deposited:	04 Aug 2026 02:39
Last Modified:	04 Aug 2026 02:39
URI:	http://repository.its.ac.id/id/eprint/142279

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