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All Journal ROTOR: JURNAL ILMIAH TEKNIK MESIN JURNAL CRANKSHAFT Indonesian Journal of Maritime Technology or abbreviated (ISMATECH)
Apriandi, Riyki
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Automotive Engineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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Pemodelan dan Analisa Respon Dinamis Impeller Pompa Sentrifugal Akibat Perbedaan Tekanan Hisap dan Tekanan Buang Dedy Sayogi, Muhammad Hariz; Apriandi, Riyki; Aldo, Jefri; Rahmany, Rijal Surya
JURNAL CRANKSHAFT Vol 8, No 1 (2025): Jurnal Crankshaft Vol.8 No.1 (2025)
Publisher : Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/cra.v8i1.14045

Abstract

Pada penelitian ini dilakukan simulasi karakteristik respon dinamis impeller pompa sentrifugal dengan tegangan input 250 V dengan perbedaan tekanan fluida pada suction inlet dan discharge outlet. Terdapat tiga parameter respon dinamis impeller yang diamati yaitu perpindahan, kecepatan sudut dan percepatan sudut. Respon dinamis perpindahan impeler dianalisis dengan mensimulasikan interval waktu dari 0 detik hingga 10 detik. kondisi pertama puncak kecepatan sudut sekitar 0,1 rad/s lebih rendah dibandingkan kondisi kedua (sekitar 0,3 rad/s). Tanda negatif hanya menunjukkan amplitudo gelombang. Antara 1,02 detik hingga 1,04 detik, puncak kecepatan sudut pada kondisi pertama adalah sekitar 0,1 rad/s, sementara pada kondisi kedua sekitar 0,2 rad/s, kondisi pertama dengan tekanan lebih rendah di inlet dan outlet membutuhkan kecepatan sudut lebih kecil (2,8 rad/s) dibandingkan kondisi kedua dengan tekanan lebih tinggi, yang memerlukan kecepatan sudut sedikit lebih tinggi (2,77 rad/s) pada waktu yang sama. Respons dinamis percepatan sudut impeler dianalisis pada kondisi awal dan keadaan stabil. Pada kondisi tunak, yang diambil antara 14,07 detik hingga 14,08 detik, kondisi pertama menunjukkan percepatan sudut lebih kecil (sekitar 100 rad/s²) dibandingkan dengan kondisi kedua, yang memerlukan percepatan sudut lebih tinggi (sekitar 240 rad/s²). Secara keseluruhan, kondisi dengan tekanan lebih tinggi di inlet dan outlet (kondisi kedua) memerlukan percepatan sudut yang lebih besar dibandingkan dengan kondisi pertama pada waktu yang sama.Kata kunci:  pompa sentrifugal, simulasi, analisis
DESIGN OF A 100 KG CAPACITY WORKING LIFT CART FOR SMALL-SCALE INDUSTRIAL APPLICATIONS Apriandi, Riyki; Rahmany, Rijal Surya
ROTOR Vol. 17 No. 2 (2024)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/rotor.v17i2.53085

Abstract

To accommodate heavy tool movement, forklifts are commonly used. However, a forklift is too large for use in confined workspaces within small industries. Therefore, it is proposed that a 'Working Lift Cart' be designed with a compact size. This research aims to design and develop a compact lift cart that offers flexible movement and reduces operational risks compared to existing forklift products. The method employed in this research involves a direct analysis of two proposed product plan concepts. The proposed concepts are selected based on a needs analysis. The chosen concept undergoes a safety risk analysis from the operator's perspective using the RULA method, while the product design is subjected to static stress analysis on the frame and the lifter. The results indicate that the second concept, with greater operational flexibility, is chosen. The RULA analysis, conducted using CATIA software, indicates that operating with a remote controller is significantly safer and less prone to injury. However, manual operation is retained for usability purposes. The analysis of the frame structure and lifter shows that the proposed design is safe for a 100 kg load on the lifter. Keywords: Working Lift Cart, Design, RULA, Static Stress Analysis
Structural Performance Analysis of HDPE and ABS Formwork Designs Using Finite Element Analysis zulkarnaen, zulkarnaen; Laksana Guntur, Harus; Apriandi, Riyki
Indonesian Journal of Maritime Technology Vol. 4 No. 1 (2026): Volume 4 Issue 1, June 2026
Publisher : Naval Architecture Department, Kalimantan Institut of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/ismatech.v4i1.8481971

Abstract

This study evaluates the structural performance of polymer-based formwork systems using HDPE and ABS materials through numerical simulation based on the Finite Element Method (FEM). Rib design variations, including square, round, and honeycomb, were analyzed by considering key parameters such as deformation, elastic strain, equivalent stress, and safety factor. The applied loading conditions consisted of hydrostatic pressure from fresh concrete and additional loads due to the accumulation of upper structural segments. The results show that ABS exhibits higher stiffness, leading to lower deformation and elastic strain values compared to HDPE. Nevertheless, HDPE demonstrates competitive performance, offering advantages in ductility, environmental resistance, and lower weight. Among the design configurations, the honeycomb structure provides the most efficient load distribution and minimizes stress concentration more effectively than square and round designs. All models, for both HDPE and ABS materials, satisfy structural safety requirements with safety factor values greater than one. Therefore, the combination of ABS material and honeycomb rib design  is  recommended  as  an  optimal  solution  for  polymer-based  formwork applications, while HDPE remains a viable alternative for applications requiring enhanced flexibility and environmental durability.
Co-Authors ALDO, JEFRI Hariz Dedy Sayogi, Muhammad Harus Laksana Guntur Rijal Surya Rahmany Zulkarnaen Zulkarnaen