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Analisa Kinematika Monobike Mechanical Toys Menggunakan GNU Octave dan Solidworks Eva Hertnacahyani Herraprastanti; Suluh Jatmiko
Jurnal Teknik Mesin Vol 12 No 2 (2019): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

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Abstract

Industry era 4.0 allows the use of cyber technology, both physical and non-physical, in all aspects of life, including the toy industry. 3-dimensional printers as a key technology industry 4.0 plays an important role. Before it is printed using a 3D printer, it becomes a real product ready to be marketed, first the product is simulated to find out if the toy product can move according to the kinematics that we design. This analysis includes the displacement, velocity, and linear and angular acceleration of the Monobike component. In this research, the analysis of component movements is limited to Link 3. In this study, a toy that can mimic the motion of an object as precisely as possible is determined, which is a monobike toy. Monobike mechanical toys mimic human activities of pedaling a bicycle. The methodology in this research is as follows: 1) Determine the dimensions of the monobike component, 2) Determine the monobike drive components, 3) Make a monobike kinematic diagram, 4) Perform kinematic analysis using the position vector of the monobike component, 5) Perform displacement, velocity calculations , and theoretical acceleration with Excel, 6) Perform kinematic analysis with Solidworks, 7) Comparison of theoretical calculation results and Solidworks simulation results. Based on the results of theoretical research and Solidworks simulations, the values ​​of displacement, velocity and acceleration are close. The average error for linear displacement is 0.261%, linear velocity 0.852%, linear acceleration 0.7664%, angular velocity 0.372%, and angular acceleration 0.492%. Kinematic analysis in monobike mechanical toys theoretically using Excel and simulation with Solidworks software, the results are more or less the same, so it can be said that this research is accurate. Solidworks is recommended as software that can be used to simulate movements in kinematic analysis.
INSTALASI UNIT BIOGAS DARI LIMBAH KOTORAN SAPI DENGAN METODE ANAEROB MENGGUNAKAN REAKTOR VOLUME 3300 L puput eka suryani; suluh jatmiko; arya dwi candra
SIMETRIS Vol 12 No 2 (2018): SIMETRIS
Publisher : Sekolah Tinggi Teknologi Ronggolawe Cepu

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Medalem is one of the villages located in Kradenan District, Blora Regency,Central Java. Most of the residents of Kradenan have a livelihood as Farmers, includingresidents of Medalem Village. In addition to farming, residents also conduct cattle and goatbreeding activities, this is due to very supportive natural conditions. Medalem Village,especially Sunggun Hamlet, gets a grant in the form of cattle from the local government tobe managed by each farmer group in Sunggun Hamlet. Until now the number of cowsmanaged by farmer groups has reached 28. Several cows maintained in one places or inresidents in their own homes. There are some disadvantage caused by the amount of cowdung produced by these cows, ranging from unpleasant odors, trees and plants that diefrom piles of cow dung, to the dwindling landfill of cow dung. This research aims toprovide appropriate solutions to overcome these problems. The activities carried out are bybuilding the installation of biogas units in Sunggun Hamlet. This biogas processingtechnique uses a cylinder reactor (floating drum). Some of the results of the activities thathave been carried out are more integrated processing of cow manure, no land wasted toaccumulate cow dung, improved soil and air health quality, availability of new LPGreplacement fuel, availability of organic fertilizer that can be directly applied to crops,availability of waste solid that can be used as a planting medium.
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

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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.
PENGARUH PENGGUNAAN SEMEN SEBAGAI BAHAN STABILISASI TANAH LEMPUNG LUNAK DI DAERAH GROBOGAN PURWODADI Hariyanto Hariyanto; Suluh Jatmiko
JITEK (Jurnal Ilmiah Teknosains) Vol 7, No 1/Mei (2021): JiTek
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (227.874 KB) | DOI: 10.26877/jitek.v7i1/Mei.8666

Abstract

Geographically Indonesia is located in the tropics, with conditions like this in the rainy season there will be high rainfall and in the dry season there will be hot weather. Weather changes result in repeated cycles of wetting and drying, so that the soil will experience changes in soil volume due to changes in water content. In such problems, special treatment of subgrade which has soft properties is needed. In this case the researcher will use cement as a soil stabilization material in the Grobogan, Purwodadi. The results obtained from the research: classification of Active clays (Montmorilonite), because the soil activity is more than 1, namely> 2.35%. From variations of mixing 0%, 17%, and 23% produce water content (w) of 21.820%, density (Gs) of 2.128%, dry weight (γd) of 1.43% shrinkage limit (SL) of 10.56%. Atterberg Limits limit with liquid limit value (LL) of 77.30% and plastic limit (PL) of 60.00%, plasticity index (PI) value of 17.30%. The relationship between OMC and MDD of native soil was obtained by maximum dry weight of 1.432 gr / cm3 at optimum water content of 10.320%. From the results of 17% soil + cement testing the optimum water content value was 8% and the maximum dry weight was 1.65 gr / cm3. From the results of 23% cement + soil testing, the optimum water content was 13% and the maximum dry weight was 1.6 gr / cm3.
Co-Authors Arya Dwi Candra Eva Hertnacahyani Herraprastansi Hariyanto Hariyanto puput eka suryani Suryanto, Hendri