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Jurnal Ilmiah Dinamika Rekayasa (DINAREK)
Published by Universitas Jenderal Soedirman
ISSN : 18583075     EISSN : 25276131     DOI : -
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering
DINAREK is a scientific journal published by Engineering Departement of Jenderal Soedirman University. DINAREK is a peer reviewed nasional journal in Indonesian, published two issues per year (February and August). DINAREK is to publish high-quality articles dedicated to all aspects of the latest outstanding developments in the field of engineering. Its scope encompasses the engineering of signal processing, electrical (power), electronics, instrumentation & control, telecommunication, Geological Engineering, Civil Engineering, Computing and informatics, and Industrial Engineering.
Arjuna Subject : -
Articles 270 Documents
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Pengenalan Ababil: Program Finite Element Analysis (FEA) 3-Dimensi Untuk Struktur Rangka-Batang Sugeng Waluyo
Dinamika Rekayasa Vol 7, No 1 (2011): Dinamika Rekayasa - Februari 2011
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2011.7.1.41

Abstract

Ababil is an open source computer program working on the basis offinite element method (FEM) which is aimed to analyze frame structures. It is mainly designed as a solver without embedded pre-or/and post-processing units. Recently, the solver is compatible only for reading and writing in the Gmsh [1] pre- and post-processing software environment. The FEM kinematics formulation applied here is relied on the Timoshenko Beam Theory (TBT) using linear shape function. Finally, the well-known FEM software MSC.Nastranis used to ensure the capability of Ababil in the prediction of frame deformation by means of FEMsimulation
Paleodiversitas Miosen Tengah Berdasarkan Data Palinologi Pada Formasi Cimandiri Lintasan Sungai Cijarian Sukabumi Setijadi, Rachmad; Rusmiyanto, Elvi
Dinamika Rekayasa Vol 10, No 2 (2014): Dinamika Rekayasa - Agustus 2014
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2014.10.2.85

Abstract

Bukti secara palinologi pada waktu lampau telah mencirikan keanekaragaman pada tumbuhan. Studi ini terdiri dari dua tahapan, yaitu pengambilan sampel lapangan dan observasi di laboratorium. Total 13 sampel dari Formasi Cimandiri Sukabumi sudah teridentifikasi memiliki kandungan fosil. Lima puluh tiga polynomorph sudah terindentifikasi, terdiri dari satu tipe taxon marine polynomorph dan 52 taxa polynomorph. Dari jumlah 52 tersebut, 38 buah berjenis arboreal pollen, 5 buah adalah non-arboreal pollen dan 11 adalah Pteridophyes. Umur geologi dari Formasi Cimandiri adalah Pertengahan Miocene terindikasi adanya Florshuetzia trilobata, F. Levipoli, dan F. Meridionalis. Berdasarkan analisis palynomorph, dapat disimpulkan tingginya keanekaragaman tumbuhan pada Pertengahan Miocene yang ada di Formasi Cimandiri. Komposisi palynomorph pada masing-masing endapan menunjukan kemiripan yang tinggi.
Analisis Sentensity Duration Frequency Kejadian Hujan di Kabupaten Banjarnegara Suroso Suroso
Dinamika Rekayasa Vol 2, No 1 (2006): Dinamika Rekayasa - Februari 2006
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2006.2.1.9

Abstract

Rainfall is the most important input component in the hydrologic process. Rainfall characteristic, which are intensity, duration, depth, and frequency. Intensity that is related to duration and frequency can be expressed by Intensity-Duration-Frequency (IDF) curve. IDF curve can be used to calculate floods design using by rational method. The objective of the research is to create IDF curve on flood prone area on Banjarnegara regency. In this study, daily rainfall depth was calculated by frequency analysis, which was started by determining the daily maximum mean rainfall, followed by calculated statistical parameter to choose the best distribution. Intensity could be calculated by Mononobe method. The result of this study indicated that the Log Normal distribution fit to most of data. The rainfall design for time periods 2, 5, 10, 15, 20, 25, 30, 40, 50 and 100 year are 116.3, 131.5, 140.2, 144.8, 147.8, 150.1, 151.9, 154.8, 156.9, dan 163.3 mm. The highly intensity of ranfall must be happen on short duration, but the lowly intensity of ranfall must be happen on long duration.
Tinjauan Kekuatan Sistem Penyangga Terowongan dengan Menggunakan Metode Elemen Hingga Apriyono, Arwan; Sumiyanto, Sumiyanto
Dinamika Rekayasa Vol 6, No 1 (2010): Dinamika Rekayasa - Februari 2010
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2010.6.1.32

Abstract

In the developing countries like Indonesia, especially in the big cities like Jakarta, tunnel constructions should be considered to solve traffic problems. Besides, geological and topographical condition in Indonesia that is rich of mine materials making tunnel construction will be developed in the future. But then, to the present time, there are too many cases of failure of tunnel construction in several countries. This failure caused by supporting system of tunnel doesn’t capable to support the construction. Based on this  phenomenon, it was necessary to research about review of supporting system strength of tunnel construction.Stability analysis of mine tunnel that belongs to P.T. Aneka Tambang Tbk, located in Pongkor Mountain, Bogor, West Java, would be done in this research. This analysis was conducted with numerical method using plaxis 3D tunnel software. Slice of tunnel along 15 meters of length will be analyzed in this research. This slice would be divided into three step of excavation. Mohr Coloumb material model were used in soil material. Whereas linear elastic model were used in other materials likes shotcrete, rock bolt and steel sets. Three variation conditions of tunnels would be considered in this research namely tunnel without supporting system, tunnel with original supporting system (same as in the research location), and tunnel with Q system supporting system. In this research, examination would be done for the change of displacement of the tunnel construction in consequence of the three conditions above.The results of this research show that the installation of supporting system reduced displacement of the tunnel significantly. Average decreasing of displacement value as a result of the original supporting system is 12.5 cm (46.30 %). Whereas, average decreasing of displacement as a result of the Q system supporting system is 9.25 cm (34.26%). Although not as strength as original supporting system, the Q system supporting system deserves to be considered in supporting system analysis.
Studi Potensi Sumberdaya Andesit Menggunakan Metode Geolistrik Di Daerah Kokap, Kabupaten Kulonprogo, Daerah Istimewa Yogyakarta Purwasatriya, Eko Bayu
Dinamika Rekayasa Vol 9, No 2 (2013): Dinamika Rekayasa - Agustus 2013
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2013.9.2.66

Abstract

The study of andesite resources was carried out in Hargowilis village, Kokap sub-district, Kulonprogo regency, Daerah Istimewa Yogyakarta province using geoelectrical data with Schlumberger configuration, as much as 14 point which is spreading on 8 hectares area. Based on regional geological map of Yogyakarta area, study area include on intrusive rock lithology’s unit compose of hipersten andesite to augite-hornblende andesite and trachiandesite. Geoelectrical method is one of geophysical method that used to observed geological condition in subsurface based on rock’s electrical properties. Andesite is one type of igneous rock which have contrast electrical properties with its surrounding rock, generally sedimentary rocks, makes it suitable for geoelectrical method to identify the presence of andesite in subsurface and also estimate its thickness to calculate the resources. Geoelectrical configuration used is 1D Schlumberger configuration where this method have advantage more accurate to calculate the thickness of rock layer especially in shallow area. The result of geoelectrical survey showing that it consist 2 layer of andesite, there are shallow layer and deep layer. This result indicate that the igneous rock in study area not only intrusion type, but also lava flow type. Resources potential of andesite both shallow and deep layer are 5,072,354 tons and resources potential of shallow andesite only is 3,162,566 tons.
Pengaruh Variasi Diameter Kolom Kapur untuk Stabilisasi Lempung Lunak pada Tinjauan Nilai Indeks Pemampatan Tanah (Cc) Apriyono, Arwan; Sumiyanto, Sumiyanto
Dinamika Rekayasa Vol 5, No 2 (2009): Dinamika Rekayasa - Agustus 2009
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2009.5.2.23

Abstract

Mostly soil in java, especially in northern area is included in soft clay soil classification. The behavior of this soil, have large value of coefficient compression (Cc), so consolidation settlement potentially occur in this soil. In this research, this problem will be handled by limes column.  Limes columns were expected could reduce Cc value so consolidation settlement could be reduced too. This research was conducted through experimental in laboratory, with box that have 40 cm in diameters and this heights is 40 cm. Five various of diameters  applied in this research and this affect to value of Cc would be examined. Those are 3 cm, 5 cm, 8 cm, 10 cm and 12 cm diameters.The result of this research show that limes column could reduce of Cc in significant value. The average change of Cc with limes column is 0,095 (37,63 %) if compare with Cc without limes column stabilization. The results also show that increasing of limes column diameters have no affects to the value of coefficient compression.
Peningkatan Produktivitas Konstruksi Melalui Pemilihan Metode Konstruksi Nugroho, Paulus Setyo
Dinamika Rekayasa Vol 8, No 1 (2012): Dinamika Rekayasa - Februari 2012
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2012.8.1.56

Abstract

Productivity growth in the construction is lower than that of in the industry sector. Level of innovation in this sector is too low. Many problems of inefficiency in the construction process are a lotof waste of resources that do not produce value. According to  LCI (Lean ConstructionInstitute) waste in the construction industry is about 57% while the activity that adds value is only 10%. The construction industry has a lot to learn from manufacture industry. Some innovations by applying an appropriate and efficient  methods in the field of construction adopted many of the manufacturing, including modular systems/fabrication (precast concrete). Construction materials are mass produced in acontrolled environment and then assembled inthe site. The use of precast on any project shows that there are advantages obtained are: cheaper, faster/more productive and guaranteed quality. The duration of the Rusunawa (Simple Flats for Rent) Structure construction phase in Cilacap for precast method is 168 days while for the implementation of the conventional method is 196 days. The duration of the construction of precast structures is faster 28 days (14%) faster than that of the conventional structures. In high-speed rail project on the border of Belgium and the Netherlands, use Rheda 2000 NL method, which development of Rheda method, can increase productivity and lower overtime costs as 24.6%. In the residential case, quicklyconstructed building criteria can be categorizedinto several aspects, such as dimensions, weight components and connection systems.The suitable selection criteria will accelerate instalment proses of the wall panel.
Pengaruh Variasi JarakKolom Kapur dalam Stabilisasi Tanah Lempung Lunak pada Tinjauan Nilai Indek Pemampatan Tanah(Cc) Arwan Apriyono; Sumiyanto Sumiyanto
Dinamika Rekayasa Vol 7, No 2 (2011): Dinamika Rekayasa - Agustus 2011
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2011.7.2.46

Abstract

Numerousbuildingslocated in north area of Java Island encountersettlement problem. The settlementoccurs because most ofsoil in the areais soft clay soil. The behavior of this soilis characterized by the large value of coefficient compression (Cc) and small valueof bearing capacity. This condition causes potentially great consolidation settlement. In this research, limes column stabilization method will be applied to make soft clay soil better. Limes columns were expected to reduce Cc value therefore consolidation settlement decreases. This research was conducted throughlaboratory experiment, usingbox100 cm in lengths, 40 cm in wide, and 40 cmin height. Three variations of diameters (5 cm, 10 cm, 15 cm) and three variations of distance of sample taken from outside of the limes column mould (10 cm,20 cm, 30 cm) was applied in this research. Influence of limes column to the value of Ccwasexamined. The result of this research showsthat limescolumn couldsignificantlyreduceCcvalue. TheCc valuedecreases when thedistance of sample taking placedecreases. The average of Ccdeclineon three variationsdistance of column (10 cm, 20 cm, 30 cm)are 17.28%, 44.97%, 52.24%respectively. The most efficient distance of thelimes column is 20 cm.
Potensi Bencana Geologi Pada Penambangan Emas dan Lempung di Desa Cihonje Kecamatan Gumelar Kabupaten Banyumas Widagdo, Asmoro; Setijadi, Rachmad
Dinamika Rekayasa Vol 11, No 1 (2015): Dinamika Rekayasa - Februari 2015
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2015.11.1.90

Abstract

Desa Cihonje di Kecamatan Gumelar, Kabupaten Banyumas, memiliki sumber daya mineral seperti emas dan tanah liat kaolin. Kedua mineral ini telah dilakukaneksploitasi oleh masyarakat setempat. Pemanfaatan sumber daya ini telah memberikan kemakmuran bagi warga setempat. Namun, upaya pertambangan tidak dalam kondisi baik dan masih belum berlisensi. Penggalian emas dan tanah liat di sekitar area perumahan telah membawa dampak yang sangat mengkhawatirkan terhadap keselamatan para penambang dan lingkungan sekitarnya. Penelitian ini pada potensi bencana yang mungkin menjadi ancaman bagi masyarakat setempat dilakukan dengan pengamatan langsung. observasi lapangan ini dilakukan dengan memetakan lokasi operasi pertambangan, perubahan lingkungan dilakukan deskripsi, mengambil gambar dan wawancara dengan penduduk dan para penambang. pertambangan emas primer mengambil urat mineral dengan membuat sumur vertikal dan horizontal. sumur ini sangat dalam dan mencapai puluhan meter. Hal ini telah mengancam keselamatan para penambang, mengganggu penggunaan lahan sebagai daerah pertanian, yang mempengaruhi ketersediaan sumber air tanah, menyebabkan tanah longsor dan mencemari sumber air sungai. pertambangan emas sekunder pada deposito aluvial di tepi sungai telah menyebabkan kerusakan lahan pertanian, erosi sungai dan pencemaran air. Pertambangan tanah liat telah menyebabkan perubahan dalam pengaturan lingkungan dan potensi longsor.
Kajian Ketahanan Kejut Beton Ringan Serat Alumunium Dengan Agregat Alwa Yanuar Haryanto
Dinamika Rekayasa Vol 2, No 1 (2006): Dinamika Rekayasa - Februari 2006
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2006.2.1.14

Abstract

This research was aimed to know the addition of alumunium fiber influence to the impact resistance of lightweight concrete. In this research, lightweight concrete was made from cement, water, sand, ALWA (Artificial Lightweight Aggregate) and Superplasticizer, mix design method was Dreux-Corrise Method. The speciment was plate with 20 cm diameter and 4 cm high. Variation of alumunium fiber addition was 0%, 0,35%, 0,75% and 1% cement weight. The test was done after 28 days age of speciment. The result showed that the most significant increasing of impact resistance was obtained on 0,75% alumunium fiber addition, which was 250% for first crack and 300% for failure

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