ANALISA PENGARUH DESAIN GRITCONE TERHADAP POLA PATAHAN GRITCONE PADA VERTICAL ROLLER MILL DENGAN SIMULASI EXPLICIT DYNAMIC (LS-DYNA)

RIZNALDY, ANDIKA (2017) ANALISA PENGARUH DESAIN GRITCONE TERHADAP POLA PATAHAN GRITCONE PADA VERTICAL ROLLER MILL DENGAN SIMULASI EXPLICIT DYNAMIC (LS-DYNA). Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Polysius Vertical Roller Mill adalah coal mill yang digunakan PT Holcim Indonesia untuk menggiling batubara bituminous untuk bahan bakar rotary kiln. Dalam pengoperasiannya, salah satu komponen dari Vertical Roller Mill mengalami kegagalan aus yaitu gritcone. Penelitian ini dilakukan untuk menganalisa perseberan ketebalan dari komponen gritcone dengan disimulasikan secara dinamis eksplisit dan berdasarkan kondisi operasional. Ketebalan dinding dipetakan karena permukaan yang terkena abrasi terdapat patahan mikro di permukaannya. Penelitian dilakukan dengan variasi ketebalan 0.01 m, dan 0.02 m serta variasi desain gritcone dengan radius bawah sebesar 0.165 m, 0.215 m, 0.265 m, 0.315 m, dan 0.365 m. Hasil penelitian menunjukkan pengurangan ketebalan paling besar terjadi pada desain gritcone dengan radius 0.165 m dengan ketebalan 0.01 m dan 0.02 m, dengan pengurangan sebesar 1.423x10-5 m dan 2.45x10-5 m. ============================================================ Polysius Vertical Roller Mill is a coal mill used to grind PT Holcim Indonesia bituminous coal to fuel the rotary kiln. In operation, one of the components of Vertical Roller Mill suffer wear failure,which is gritcone. This study was conducted to analyze the thickness distribution of the component using explicit dynamic simulation and based on operational conditions. The wall thickness of the exposed surface is mapped as a microcrack is constructed due to abrasion on the surface. The study was conducted with thickness variation of 0.01 m and 0.02 m as well as design variations gritcone the bottom radius of 0.165 m, 0.215 m, 0.265 m, 0.315 m and 0.365 m. The results showed the greatest reduction in thickness occur in the design gritcone with a radius of 0.165 m with a thickness of 0.01 m and 0.02 m, with a reduction of 1.423x10-5 m and 2.45x10-5 m.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Analisa dinamis eksplisit, Vertical Roller Mill, aus, ketebalan, gritcone.
Subjects: T Technology > T Technology (General)
T Technology > TA Engineering (General). Civil engineering (General) > TA347 Finite Element Method
Divisions: Faculty of Industrial Technology > Material & Metallurgical Engineering > (S1) Undergraduate Theses
Depositing User: ANDIKA RIZALDY
Date Deposited: 23 Jan 2017 08:17
Last Modified: 23 Jan 2017 08:17
URI: http://repository.its.ac.id/id/eprint/2659

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