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PENGARUH MATERIAL TERHADAP DEFORMASI, STRAIN, DAN SAFETY FACTOR PADA BRACKET CALIPER MENGGUNAKAN METODE ELEMEN HINGGA Ghyferi, Andi Abdullah; Bahatmaka, Aldias; Wibowo, Muhammad Yusuf; Anwar, Ahmad; Ridananda, Ayyub; Vandika, Anggi
Jurnal Rekayasa Mesin Vol. 15 No. 3 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i3.1700

The purpose of this study is to analyze the deformation, equivalent elastic strain, and safety factor of a bracket bracket made from two different materials by using the Finite Element Method, specifically aluminum alloy 6061 T6 and cast iron EN GJL 100. The result of this study is that the Aluminum Alloy 6061T6 material has a deformation of 3.57E-04 whereas the Cast iron EN GJL 100 material is 2.75E-04. In the elastic strain equivalent test, the Aluminium alloy 6061 T6 material is 3.00-E07 and in the Cast Iron EN G JL 100 materials is 2.32E-07. In the safety factor test, Cast Iron En G J L 100 material was better than 1.8617 compared to the Alumium Alloys 60 61 T6 materials are 1.5125. This shows that Cast Iron E GJ L 100 materials are better in deformations, eqeuivalent elastic stations, and safety factors in this case.

Enhancing Ship Stability: A Comparative Analysis of Single and Double Chine Hull Configurations of Semi-Planning Hull at High Speed Ghyferi, Andi Abdullah; Bahatmaka, Aldias; Naryanto, Rizqi Fitri; Won, Lee Sang; Cho, Joung Hyung
Mekanika: Majalah Ilmiah Mekanika Vol 23, No 2 (2024): MEKANIKA : Majalah Ilmiah Mekanika
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mekanika.v23i2.90734

Ship stability could be considered one of the defining aspects of marine transport, as it directly influences the safety and performance of the ship. Past works have found hull geometry critical in the stability issue; however, the impact of various Chinese configurations under different operation scenarios is missing. This paper seeks to address this gap by studying the effects of Chinese single and double geometries on stability, primarily concerning trimming by stern angles in compliance with the High-Speed Craft (HSC) 2000. Annex 8: Monohull Intact Stability Criteria. Stability calculations using Maxsurf software were done concerning angles of the steady heel, the area under the righting levers (GZ) curve, maximum GZ, and initial transverse metacentric height (GMt). The study showed that both Chinese configurations conformed to the prescribed stability standards. Still, the double Chinese configuration showed better results in terms of stability at a 2-degree heel angle, with a GZ value of 1.692 and the highest GMt value in a steady state. Therefore, the research establishes enhanced stability benefits that the users stand to benefit from by adopting double chine configurations relative to single chine styles.

Pelatihan pembuatan objek 3D bagi siswa SMA Negeri 1 Kedungwuni sebagai upaya meningkatkan keterampilan desain dan peminatan jurusan teknik mesin Bahatmaka, Aldias; Maulana, Sonika; Syafei, M. Hilman Gumelar; Setiadi, Rizki; Fahmi, Fiqri Fadillah; Hidayat, Indra Nurul; Buana, Lanang Puspa; Ghyferi, Andi Abdullah
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 8, No 4 (2024): December
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v8i4.27361

Abstrak Pelatihan pembuatan objek 3D Modelling menggunakan Blender telah selesai dilaksanakan pada hari selasa tanggal 6 agustus 2024 untuk siswa siswi Sekolah Menengah Atas (SMA) Negeri 1 Kedungwuni Kabupaten Pekalongan. Tujuan pelatihan ini adalah untuk memberikan peserta pemahaman mendasar tentang cara menggunakan alat desain Blender untuk membuat dan mendesain animasi objek 3D yang dapat diekspresikan dalam bentuk visual realistis, termasuk ukuran, tekstur, dan bentuk item. Pendekatan pelatihan ini terdiri dari beberapa fase praktik yang berfokus pada pengenalan Blender 3D, ide-ide mendasar untuk animasi 3D, desain, dan pengukuran, serta kerangka kerja dan pemodelan, pemberian tekstur, dan visualisasi. Panduan belajar komprehensif tentang pemodelan 3D disediakan bagi siswa, yang bekerja dalam kelompok untuk membuat dan merancang animasi objek 3D dari awal hingga akhir. Ini membantu mereka menjadi lebih kreatif dan memahami apa yang membuat seni desain responsif menarik secara visual. Hasil kuesioner menunjukkan bahwa adanya peningkatan pengetahuan siswa dalam kegiatan pelatihan pembuatan objek 3D. Sebelum dilakukan pelatihan, rata-rata pengetahuan siswa sebesar 35% dalam memahami desain 3D, kemudian mengalami peningkatan menjadi rata-rata sebesar 90% dalam memahami memuat objek 3D mengunakan software blender setelah diberi pelatihan. Hal ini dapat disimpulkan bahwa para siswa mampu membuat desain pemodelan objek 3D sederhana dengan mudah. Namun tentunya perlu ditingkatkan durasi pelatihan dengan harapan memberikan dampak positif yang lebih banyak dalam meningkatkan softskill siswa SMA Negeri 1 Kedungwuni. Kata kunci: pelatihan; Objek 3D model; blender; pengabdian masyarakat Abstract Training in the field of 3D Modeling using Blender has been completed for students of Senior High School (SMA) Negeri 1 Kedungwuni, Pekalongan Regency. The purpose of this training is to provide participants with a basic understanding of how to use Blender design tools to create and design 3D object animations that can be expressed in realistic visual forms, including the size, texture, and shape of the item. This training approach consists of several practical phases that focus on the introduction of Blender 3D, fundamental ideas for 3D animation, design, and measurement, as well as frameworks and modeling, texturing, and visualization. A comprehensive study guide on 3D modeling is provided for students, who work in groups to create and design 3D object animations from start to finish. This helps them become more creative and understand what makes responsive design art visually appealing. The results of the questionnaire showed that there was an increase in student knowledge in the 3D object creation training activities. Before the training, the average student knowledge was 35% in understanding 3D design, then increased to an average of 90% in understanding loading 3D objects using blender software after being given training. It can be concluded that students are able to create simple 3D object modeling designs easily. However, of course, the duration of the training needs to be increased in the hope of providing more positive impacts in improving the soft skills of students of SMA Negeri 1 Kedungwuni. Keywords: training; 3D object model; blender; community service

Analyzing the Total Resistance and Wave Pattern of Purse Seine Vessels with Photovoltaic-Powered Naryanto, Rizqi Fitri; Bahatmaka, Aldias; Wibowo, Muhammad Yusuf; Ghyferi, Andi Abdullah; Fahmi, Fiqri Fadillah; Hyoung Cho, Joung
Rekayasa Vol. 22 No. 2 (2024)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/rekayasa.v22i2.10634

With 64.97% of its territory consisting of sea, Indonesia is one of the world's largest maritime nations and produces approximately 8.02 million tons of fish annually. Traditional fishing vessels play a crucial role in supporting livelihoods, yet their design is often based on hereditary methods rather than hydrodynamic optimization. This study uses catamaran hull forms as a design reference to analyze the total resistance and wave patterns of purse seine vessels with photovoltaic-powered systems. Computational methods are employed to predict vessel performance efficiently. The resistance analysis applies the Slender Body approach and Savitsky's mathematical model, supported by comparative studies for validation. Particular attention is given to the influence of chine configurations on resistance characteristics and wave formation. Results indicate that the addition of chines increases the Froude number and contributes to reducing total resistance. Among the variations, single chine geometry demonstrates the lowest resistance, making it the most efficient configuration for catamaran fishing vessels. While chine modifications affect the wave pattern, the hull maintains a relatively clean wake distribution. These findings highlight the potential for improving vessel design through careful chine geometry optimization combined with computational modeling. The study underscores the importance of modern hydrodynamic analysis in advancing traditional fishing vessels toward higher efficiency and sustainability. Future research is recommended to incorporate more advanced computational approaches, such as Computational Fluid Dynamics (CFD), examine water-hull interactions and enhance vessel performance under operational conditions.

Penerapan teknologi pengering pelet untuk peningkatan kualitas dan produksi pakan ternak di CV Sibad Engineering Semarang Bahatmaka, Aldias; Fitriyana, Deni Fajar; Darsono, Febri Budi; Wibowo, Muhammad Yusuf; Fahmi, Fiqri Fadillah; Hidayat, Indra Nurul; Buana, Lanang Puspa; Ghyferi, Andi Abdullah
KACANEGARA Jurnal Pengabdian pada Masyarakat Vol 8, No 1 (2025): Februari
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/kacanegara.v8i1.2576

Pakan ternak merupakan faktor terbesar yang mempengaruhi produktivitas ternak. Dalam hal ini, mitra masih mengalami kendala dalam proses pengeringan pelet sebagai pakan ternak. Hal yang masih dilakukan dengan melakukan proses pengeringan pakan ternak terdahulu yaitu masih dilakukan secara konvensional dengan dijemur dibawah terik sinar matahari, sehingga tidak efektif dalam mengeringkan pakan ternak. Oleh karena itu perlu penerapan teknologi pengeringan dari hasil pengolahan pakan ternak menggunakan mesin rotary dryer. Mesin pengering dengan rotary dryer ini, pakan ternak dapat dikeringkan menggunakan drum pengering yang terbuat dari baja tahan karat dan dengan sistem kontrol komponen PLC. Hasil pengeringan menggunakan mesin pengering rotary dryer dihasilkan dalam bentuk serbuk atau butiran. Penerapan teknologi mesin rotary dryer ini dirancang untuk mencapai beberapa tujuan, termasuk meningkatkan efisiensi pengeringan pakan ternak dan meningkatkan kualitas dan produksi pakan ternak. Penerapan teknologi mesin pengering rotary dryer ini diharapkan dapat meningkatkan kualitas dan produksi pakan ternak di CV SIBAD Engineering Semarang.

NUMERICAL ANALYSIS OF MOUNTING BRACKET STRUCTURE ON THE DAMPING EFFECT OF STABILIZER STEERING DAMPERS Wibowo, Muhammad Yusuf; Bahatmaka, Aldias; Rusiyanto, Rusiyanto; Fitriana, Deni Fajar; Ghyferi, Andi Abdullah; Anwar, Ahmad; Ridananda, Ayyub; Chasan, Ahmad
Jurnal Rekayasa Mesin Vol. 16 No. 1 (2025)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v16i1.1657

Due to bumps or holes in the road, certain regions' road surface is still unsuitable for riding at high speeds. Many motorcycles used stabilizer steering dampers to reduce weave and wobble. Bracket is a structure that holds the stabilizer steering dampers to the motorcycle steering. Bracket plays a significant role in maintaining the stabilizer steering dampers as well as stopping any vibration due to the dynamic conditions. This paper presents Finite Element Analysis of a bracket, which is analyzed material aluminum 6061 and aluminum alloy cast. In this study, we have explored using Static Analysis to calculate the internal force, displacement, and stress of structural brackets. Hence in this study, we have performed Modal Analysis to determine the natural frequencies of the bracket for safety. And also, we have performed Transient Analysis to study the behavior of structure brackets over time in response to time-varying loads and vibrations in dynamic conditions.

PENGARUH MATERIAL TERHADAP DEFORMASI, STRAIN, DAN SAFETY FACTOR PADA BRACKET CALIPER MENGGUNAKAN METODE ELEMEN HINGGA Ghyferi, Andi Abdullah; Bahatmaka, Aldias; Wibowo, Muhammad Yusuf; Anwar, Ahmad; Ridananda, Ayyub; Vandika, Anggi
Jurnal Rekayasa Mesin Vol. 15 No. 3 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i3.1700

The purpose of this study is to analyze the deformation, equivalent elastic strain, and safety factor of a bracket bracket made from two different materials by using the Finite Element Method, specifically aluminum alloy 6061 T6 and cast iron EN GJL 100. The result of this study is that the Aluminum Alloy 6061T6 material has a deformation of 3.57E-04 whereas the Cast iron EN GJL 100 material is 2.75E-04. In the elastic strain equivalent test, the Aluminium alloy 6061 T6 material is 3.00-E07 and in the Cast Iron EN G JL 100 materials is 2.32E-07. In the safety factor test, Cast Iron En G J L 100 material was better than 1.8617 compared to the Alumium Alloys 60 61 T6 materials are 1.5125. This shows that Cast Iron E GJ L 100 materials are better in deformations, eqeuivalent elastic stations, and safety factors in this case.

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