Amrinsyah, Amrinsyah
Mechanical Engineering Dept., Engineering Faculty, University of Medan Area

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Numerical Study on Plate Holders Pipe Recovery Boiler Superheater Amrinsyah, Amrinsyah; syam, amir; Darianto, Darianto; zulfikar, zulfikar
JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY Vol 2, No 1 (2018): EDISI JUNI
Publisher : JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY

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Abstract

The important part which has a function as supporting of superheater header on the boiler recovery type (RB) is a couple of support plate which is hanged on the hanger rod. This part is very difficult to analyze by experimental because there are in a tight insulation and heavy duty condition. This research aim to obtain the stress distribution that happened on the plate as the effect of static load in simulation mode. The model is designed base on the dimension of real support plate size 400x200 mm and thickness 15 mm. It is use the FEM software of Ansys version 5.4. The theory of failure analysis of Tresca and von Mises become the reference for materials strength. The area contact theory of b represents the reference to determine the length of stress area along curve of both contact area. The material that is used is from steel ASTM A514 with the yield strength 690 MPa. The Result is stress distribution along curve and also critical point which has possibility failure occurs on the support plate. The analysis result could be a reference for the development of the further construction.
NUMERICAL ANALYSIS OF STRENGTH OF REAR BRAKE HOLDER FLAT ON THE MOTOR CYCLE DUE TO IMPACT LOAD Zulfikar, Zulfikar; Umroh, Bobby; Amrinsyah, Amrinsyah; Kurniawan, Fadly A
JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY Vol 2, No 1 (2018): EDISI JUNI
Publisher : JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY

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Abstract

Brake is one of vital motorcycle element, which serves as a speed reduction mechanism. This section reinforced with retaining plate which serves to hold the wheels when braking process occurs. Research on the plate strength is still rarely found. Stress distribution that occurs on the plate due to shock loads is also not well known. Therefore, this study aims to obtain the strength retaining plate with a numerical analysis of the distribution of stress and deformation which occur on plate. Research done in two ways, experimentally and numerical simulations. Experimentally, direct measurements on the amount of stress that occurs on the plate. The research was done by putting strain gage on the connection plate and brake. In simulation, using Nastran software with the primary data based on the results of the experimental measurements. Based on the results of the numerical analysis of the stress distribution that occurs is obtained that the maximum stress distributed around the staging area in direct contact with the brake. Therefore, motorists should be aware that section and provide additional anchoring structure to further strengthen the structure of the retaining plate rear brake.
Numerical Simulation on Mechanical Strength of a Wooden Golf Stick Darianto, Darianto; Umroh, Bobby; Amrinsyah, Amrinsyah; zulfikar, zulfikar
JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY Vol 2, No 1 (2018): EDISI JUNI
Publisher : JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (436.152 KB)

Abstract

In general, golf players only know the techniques used in Golf games, but do not know the golf sticks response that occurs when the ball is hit. Referred to as response is the stress and strain that arises from the impact load that occurs when the hitting member touches the ball. The objectives of this research are: (a) to analyze golf sticks response when impact occurs, and (2) to know the stress distribution that occurs in golf sticks. The golf stick design in this study uses the autodesk inventor software. The material used is Titanium for head stick and Graphite for stick rod. The basic principle of this study is based on simple swing pendulum method. The variables that will be used for simulation are: swing speed, that is difference between start and end speed, that is Δv = 272,2 m / s, impact time, which is the time when the ball touches the batter Δt = 0.0005 seconds, the volume of the head of the stick Vo = 96,727 mm3, the cross-sectional area of the stick A = 63,504 mm2, the head mass of the sticks ρ = 4620 kg / m3, and the modulus of titanium elasticity 9.6 e +10 Pa. From the simulation result on the surface of the golf club hitter is obtained as follows: σmax = 2.1231e +10 Pa at 1.231e-06 s, emax = 0.22115 m / m at 1.231e-06 s, and the maximum stress and strain is located in the area the connection between the stick and the head of the stick.
Kapasitas Aliran Terhadap Daya Turbin Kurniady, Irvan; Amrinsyah, Amrinsyah; Amirsyam, Amirsyam
JOURNAL OF ELECTRICAL AND SYSTEM CONTROL ENGINEERING Vol 2, No 2 (2019): Journal Of Electrical And System Control Engineering Februari
Publisher : Universitas Medan Area

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Abstract

Sumber energi yang dapat diperbaharukan di Indonesia menurut sumber asean energy salah satunya adalah mikrohidro yang memanfaatkan air sebagai sumber energi dari suatu turbin. Energi potensial air diubah menjadi energi kinetik pada nozel. Air keluar nozel yang mempunyai kecepatan tinggi membentur sudu turbin. Setelah membentur sudu arah kecepatan aliran berubah sehingga terjadi perubahan momentum (impulse) sehingga roda turbin akan berputar. Turbin Pelton merupakan turbin impuls yang terdiri dari satu set sudu jalan yang diputar oleh pancaran air yang disemprotkan dari  satu atau lebih alat yang disebut nozel. Turbin Pelton adalah salah satu dari jenis turbin air yang paling efisien dan sesuai digunakan untuk head tinggi dan debit aliran yang kecil. Turbin Pelton mempunyai beberapa keuntungan antara lain efisisensi turbin yang relatif stabil pada berbagai perubahan debit aliran. Tujuan penulisan artikel ilmiah ini adalah untuk mengetahui dan memberikan wawasan tentang model sudu dan nozel pada Turbin Pelton sebagai Pembangkit Listrik Tenaga Mikrohidro (PLTM). Model sudu dan nozel yang bervariasi  akan memberi impuls yang baik untuk menghasilkan putaran turbin. Karakteristik model sudu turbin pada variasi jarak nozel dapat menghasilkan efisiensi yang tinggi.