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All Journal Jurnal Energi Dan Manufaktur Simetris Jurnal Simetris Prosiding SNATIF DINAMIKA Jurnal Ilmiah Teknik Mesin Teknika: Engineering and Sains Journal AL-JAZARI JURNAL ILMIAH TEKNIK MESIN Jurnal Teknik Mesin JATI EMAS (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) International Journal of Engagement and Empowerment (IJE2) Jurnal Pengabdian Masyarakat Ilmu Terapan (JPMIT) J-ABDIPAMAS (Jurnal Pengabdian Kepada Masyarakat) Fokus Abdimas
Eva Hertnacahyani Herraprastansi
Sekolah Tinggi Teknologi Ronggolawe
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Journal : Simetris

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Studi Numerik Gerakan Mainan Mekanik Monobike Eva Hertnacahyani Herraprastanti; Hendri Suryanto .; Suluh Jatmiko .
SIMETRIS Vol 13 No 2 (2019): SIMETRIS
Publisher : Sekolah Tinggi Teknologi Ronggolawe Cepu

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

In today's development where there are several applications to design a product, where in the design of a product, not only can physically design the components, but also can design the desired movements. In order to produce product movements as desired, when designing it must first choose the right mechanism and perform synthesis and analysis of kinematics. To make a toy move, the components which make up the toy are needed by following a certain mechanism. In this study the mechanical toy that will be analyzed for its movements is Monobike. In the monobike there is a Slider Crank mechanism that results from the paddling of the foot which rotates the pedal and moves up and down. The up and down pedal will turn the second wheel and cause the body of the doll holding the fan to move up and down. The research objective is to numerically analyze component movements in Monobike mechanical toys which include linear displacement, velocity and acceleration analysis. In this research, a monobike mechanical toy that mimics human activities in pedaling a bicycle is determined. The methodology in this research is as follows: a) make a kinematic diagram, b) determine the position vector of each link, c) derive the equation, d) make the GNU Octave code. Based on the results of the study concluded that a numerical study with the GNU Octave can be done to analyze the kinematic motion of a machine. Linear displacement on link 3 has the furthest displacement of 18.38 mm, and one cycle of movement requires 120 seconds. The maximum linear speed of the Monobike mechanical toy is 36.2 mm / sec. While the maximum linear acceleration of a monobike mechanical toy is 172.3 mm / sec. GNU Octave is a freeware application that is no less reliable than the Matlab application in analyzing the kinematics of a machine.
ANALISIS KEKUATAN STRUKTUR HYDRAULIC LIFTING MACHINE DENGAN MENGGUNAKAN METODE ELEMEN HINGGA Ahmat Saebudin; Hendri Suryanto; Eva Hertnacahyani Herraprastanti
SIMETRIS Vol 14 No 2 (2020): SIMETRIS
Publisher : Sekolah Tinggi Teknologi Ronggolawe Cepu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51901/simetris.v14i2.138

Abstract

Hydraulic Lifting Machine merupakan jenis alat angkat yang didesain untuk memindahan barang ditempat yang relatif sempit. Dalam mendesain suatu alat selain fungsi dan kegunaannya kekuatan struktur merupakan salah satu aspek yang sangat penting untuk diperhatikan. Struktur tersebut haruslah mampu untuk menanggung beban yang timbul saat beroperasi dan memberikan keamanan bagi penggunanya dari kegagalan struktur. Oleh sebab itu tujuan dari penelitian ini adalah untuk menganalisis kekuatan struktur Hydraulic Lifting Machine dengan menggunakan metode elemen hingga. Berdasarkan hasil dari simulasi yang telah dilakukan dimana nilai tegangan resultan dan defleksi maksimum yang timbul pada struktur Hydraulic Lifting Machine yaitu pada beban kerja 100 kg tegangan resultannya sebesar 90,62 MPa dengan defleksi maksimum 4,39 mm, pada beban kerja 250 kg tegangan resultannya sebesar 218,51 MPa dengan defleksi 10,71 mm, pada beban kerja 500 kg tegangan resultannya sebesar 431,68 MPa dengan defleksi 21,25 mm, pada beban kerja 750 kg tegangan resultannya sebesar 644,84 MPa dengan defleksi 31,79 mm, dan pada beban kerja maksimal 1000 kg tegangan resultannya sebesar 858 MPa dengan defleksi 42,33 mm. Berdasarkan pada peraturan BS-5950 Structure Use of Steelwork in Building, nilai batas defleksi maksimumnya tidak boleh lebih dari 7,778 mm. Sedangkan untuk batas tegangan resultannya berdasarkan peraturan Allowable Stress Design (ASD) untuk dinyatakan aman adalah sebesar 149,7 MPa. Sehingga dapat disimpulkan bahwa struktur Hydraulic Lifting Machine layak digunakan dengan beban kerja maksimal 100 kg dengan angka safety factor 2,5. Kata kunci : Crane, Metode Elemen Hingga, Tegangan Von Mises.
Analisis Tegangan Pada Rangka Mobil Off Road Menggunakan Metode Elemen Hingga Dengan Software SolidWorks Hendri Suryanto; Eva Hertnacahyani Herraprastanti
SIMETRIS Vol 17 No 1 (2023): Simetris (Issue is on the progress)
Publisher : Sekolah Tinggi Teknologi Ronggolawe Cepu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51901/simetris.v17i1.317

Abstract

The chassis is the main part of a vehicle that functions to hold all components and passengers and must be able to withstand the loads that occur without experiencing excessive deflection or deformation. Off-road cars are designed to be able to pass on unpaved roads or terrain or rocky surfaces. With such terrain, it will put an excessive burden on the car, especially on the frame. The frame will be subjected to greater bending and torsional loads if the car is used on an uneven surface. For that we need a frame that is strong and rigid so that it is safe for the driver and other car components. In this study, an analysis of the stress that occurs on the frame of the TM D3 Off-Road Car was carried out to determine its strength. The analysis was carried out numerically using the finite element method using SolidWorks software. The results of the analysis show that under a static load of 3000 N, the frame is still in a safe condition because the stress that occurs in the frame is below the yield stress value of the material used, while at a torsional loading of 500 N.m, the frame is in an unsafe condition because the stress that occurs exceeds the value the yield stress of the material used. After modifying the frame, the simulation results with 500 N.m torsional loading show that the stress that occurs in the frame is in a safe condition.
Co-Authors ., Ichlas Imran ., Saat Riyanto ., Windarti . Achmad Taufik Ahmat Saebudin Dea Salsabilla Eko Budi Santoso Eko Budi Santoso Eko Budi Santoso Eko Budi Santoso Eko Budi Santoso Endang Kurniawati Gunawan, Helmi Hendri Suryanto Korawan, Agus Dwi Lastoni Wibowo Lies Indriyatni Mochamat Slamet Riyadi Mohammad Tauviqirrahman Muhamad Najib Mubarok Muhammad Al Ghifari Rachmad Hidayat Rifky Ismail Sarip Sarip Suluh Jatmiko Suprawikno . Suprawikno, Suprawikno Suryanto, Hendri Wahyusari, Retno