Irawan, Hasna' Faizah Laily (2024) Perbandingan Tegangan dan Deformasi yang terjadi Sebelum dan Sesudah Penambahan Reinforcement Pad pada Pressure Vessel Air Receiver Bertekanan 152,29 Psi. Diploma thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Pressure vessel merupakan tangki yang digunakan untuk penyimpanan fluida bertekanan, fluida dalam temperatur rendah maupun temperatur tinggi. Pada pengoperasiannya, pressure vessel menerima beban berupa tekanan internal, tekanan eksternal, berat pressure vessel beserta isinya, dan beban eksternal akibat pemasangan nozzle. Pemasangan nozzle ini dapat menyebabkan penipisan ketebalan di area sekitar sambungan nozzle yang akan meningkatkan nilai tegangan pada area tersebut dan dapat menyebabkan kegagalan pada pressure vessel.
Solusi untuk mengurangi tegangan pada area sambungan nozzle yang telah mengalami penipisan ketebalan adalah dengan menambahkan reinforcement pad. Plat penguat ini memastikan bahwa area tersebut dapat menahan tegangan operasional dengan aman, terutama pada area yang rentan terhadap diskontinuitas geometris. Pada penelitian ini, penulis menganalisis tegangan, regangan, dan deformasi yang terjadi pada pressure vessel sebelum dan setelah penambahan reinforcement pad untuk meninjau kekuatan pressure vessel dalam menahan beban nozzle dengan menggunakan metode finite element analysis. Material yang digunakan untuk pressure vessel ini adalah SA-516 Gr. 70.
Hasil penelitian menunjukkan bahwa penambahan reinforcement pad memperkuat area sambungan nozzle karena tegangan pada pressure vessel menurun dari 88.207 psi menjadi 21.531 psi. Selain itu, nilai regangan juga berkurang dari 0,0031696 menjadi 0,00074353 dan nilai deformasi material menurun dari 0,050598 in menjadi 0,03579 in. Analisis lebih lanjut menunjukkan bahwa nilai tegangan hasil finite element analysis sebesar 21.531 psi berada di bawah tegangan yield material SA-516 Gr. 70, yaitu 37.700 psi. Hal ini menunjukkan bahwa tegangan yang terjadi berada di bawah batas elastis material, sehingga tidak terjadi deformasi permanen. Oleh karena itu, pressure vessel dapat dinyatakan aman karena mampu menahan tekanan operasional.
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Pressure vessel is a tank used for storage of pressurized fluids, fluids in low temperatures and high temperatures. In operation, pressure vessels receive loads in the form of internal pressure, external pressure, the weight of the pressure vessel and its contents, and external loads due to nozzle installation. This nozzle installation can cause thickness thinning in the area around the nozzle connection which will increase the stress value in the area and can cause failure of the pressure vessel.
A solution to reduce stress in nozzle joint areas that have experienced thickness thinning is to add a reinforcement pad. These reinforcement pads ensure that the area can safely withstand operational stresses, especially in areas that are prone to geometric discontinuities. In this study, the authors analyzed the stresses, strains, and deformations that occurred in the pressure vessel before and after the addition of the reinforcement pad to review the strength of the pressure vessel in withstanding the nozzle load using the finite element analysis method. The material used for this pressure vessel is SA-516 Gr. 70.
The results showed that the addition of reinforcement pad strengthened the nozzle connection area because the stress in the pressure vessel decreased from 88,207 psi to 21,531 psi. In addition, the strain value also decreased from 0.0031696 to 0.00074353 and the material deformation value decreased from 0.050598 in to 0.03579 in. Further analysis shows that the finite element analysis stress value of 21,531 psi is below the yield stress of SA-516 Gr. 70, which is 37,700 psi. This indicates that the stresses that occur are below the elastic limit of the material, so no permanent deformation occurs. Therefore, the pressure vessel can be declared safe because it is able to withstand operational pressure.
Item Type: | Thesis (Diploma) |
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Uncontrolled Keywords: | Pressure vessel, Reinforcement pad, Finite element analysis, Pressure vessel, Reinforcement pad, Finite element analysis |
Subjects: | T Technology > TS Manufactures > TS283 Pressure vessels. |
Divisions: | Faculty of Vocational > Mechanical Industrial Engineering (D4) |
Depositing User: | HASNA' FAIZAH LAILY IRAWAN |
Date Deposited: | 04 Aug 2024 15:17 |
Last Modified: | 04 Aug 2024 15:17 |
URI: | http://repository.its.ac.id/id/eprint/111086 |
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