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All Journal Jurnal Teknik Mesin CIVED (Journal of Civil Engineering and Vocational Education) QALAMUNA: Jurnal Pendidikan, Sosial, dan Agama INVOTEK: Jurnal Inovasi Vokasional dan Teknologi JURNAL PENDIDIKAN TAMBUSAI Jurnal Teknologi Informasi dan Pendidikan MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat GANDRUNG: Jurnal Pengabdian Kepada Masyarakat Teknomekanik Ideguru: Jurnal Karya Ilmiah Guru Vocational : Jurnal Inovasi Pendidikan Kejuruan Jurnal Vokasi Mekanika Al-Alam : Islamic Natural Science Education Journal Tsaqofah: Jurnal Penelitian Guru Indonesia MASALIQ: Jurnal Pendidikan dan Sains DEVOTE: Jurnal Pengabdian Masyarakat Global Jurnal Aplikasi IPTEK Indonesia Al-DYAS : Jurnal Inovasi dan Pengabdian kepada Masyarakat Journal of Engineering Researcher and Lecturer Ranah Research : Journal of Multidisciplinary Research and Development Journal of Innovative and Creativity Journal of Civil Engineering and Vocational Education Venus: Jurnal Publikasi Rumpun Ilmu Teknik Journal of Golden Generation Education JRTI (Jurnal Riset Tindakan Indonesia)
Delima Yanti Sari
Universitas Negeri Padang
Religion Aerospace Engineering Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Transportation Other

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Finite element analysis and crashworthiness evaluation of a multi-stage aluminium alloy 6061-T6 impact attenuator for Formula SAE Aditia Pratama; Zainal Abadi; Delima Yanti Sari; Wanda Afnison
Journal of Engineering Researcher and Lecturer Vol. 5 No. 2 (2026): Regular Issue
Publisher : Researcher and Lecturer Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58712/jerel.v5i2.219

Abstract

Formula SAE regulations require every prototype vehicle to be equipped with an impact attenuator as a passive safety system capable of absorbing a minimum frontal impact energy of 7,350 J at an impact velocity of 7 m/s for a vehicle with a mass of approximately 300 kg. This study aims to design an impact attenuator that satisfies the Formula SAE requirements to improve vehicle crashworthiness. Three design variations were analyzed using Finite Element Analysis (FEA) with LS-DYNA to evaluate energy absorption, impact force, acceleration/deceleration, and displacement. The accuracy of the numerical model was validated using previously published experimental data before analyzing the effect of thickness variation in each stage of the impact attenuator. The simulation results show that the optimum design is capable of absorbing impact energy above the minimum requirement of 7,350 J, exhibits a high Crash Force Efficiency (CFE), produces acceleration within the prescribed safety limits, and provides controlled deformation during the impact process. The results indicate that the proposed impact attenuator design satisfies the Formula SAE safety requirements and has the potential to be applied to prototype vehicles to improve safety performance during frontal collisions.
Mechanical characteristics and FEA-based non-uniform infill density approaches for Fused Deposition Modelling (FDM)-printed components: A literature review Mhd. Fahri Meihanda Putra; Syahril Syahril; Delima Yanti Sari
Journal of Engineering Researcher and Lecturer Vol. 5 No. 2 (2026): Regular Issue
Publisher : Researcher and Lecturer Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58712/jerel.v5i2.220

Abstract

Fused Deposition Modelling (FDM) is one of the most widely used additive manufacturing (AM) technologies for producing functional polymer components. However, commercially available slicing software generally applies a uniform infill density throughout the entire component without considering the actual stress distribution, resulting in excessive material usage in low-stress regions and unnecessary increases in component weight. This literature review synthesizes current knowledge on the mechanical characteristics of FDM-printed components and evaluates Finite Element Analysis (FEA)-based non-uniform infill density approaches as a promising strategy for structural optimization. The reviewed literature covers the effects of anisotropic behaviour, internal voids, infill density, infill pattern, and the integration of FEA with topology optimization techniques for FDM components. The findings indicate that the layer-by-layer deposition process produces pronounced mechanical anisotropy and introduces internal voids that influence structural performance. The relationship between infill density and mechanical strength is positive but nonlinear, whereas different infill patterns at the same density can produce variations of up to 82% in flexural strength. Although FEA provides reliable estimates of stress distribution, prediction errors of approximately 8.67–12% remain because conventional simulations assume homogeneous and isotropic materials that do not accurately represent the actual characteristics of FDM-printed components. Furthermore, FEA-based multi-zone non-uniform infill density strategies have been reported to increase peak load by up to 49% and bending stiffness by up to 46% compared with conventional uniform-density configurations. Overall, this review demonstrates that FEA-based non-uniform infill density is a promising design optimization strategy for functional FDM-printed components by improving structural performance while reducing unnecessary material usage. Future research should focus on density transition design and experimental validation to improve the reliability and practical implementation of this approach.
Co-Authors - Primawati Abd Aziz Abdul Aziz Aditia Pratama Adityo Adityo Adlan Azmi Abdullah Afdal Dinilhaq Afferli Seftian Agusriza Almalik Akbar, M. William Akram Ramadhan Al Afif Attorik Alfian Barwan, Esco Alparis Nico Putra Utama Altarisi, Muhammad Athar Ambiyar, Ambiyar Aminuyati Ananda Jafron Rhionaldo Andika Putra Andre Kurniawan Andre Kurniawan Angga Hermawansyah Anna Niska Fauza Arafat, Andril Arfan Iswanda Arwizet Arwizet, Arwizet Asnil Asnil Azmul Fauzi Bagas Santoso Bagas Santoso Bakar, Muhammad Jamil Bestra Hamizum Budi Syahri Bulkia Rahim Carlen Muhammad Hendra Dani Harmanto Delfisanur Delfisanur Dieter Rahmadiawan Dinilhaq, Afdal Dori Yuvenda Dwi Sakti Putra Efendi, Fiki Efendi EKA RAHAYU Eko Indrawan Elmoudi, Muhammad Fatiy Ema Wulansari, Rizky Erika Afandi Fahrezi, Rangga Ashar Faisal Gustianto Fajero Tiffano Farid Permata Putra Fattahul Rizki Febri Prasetya Fenda Lisman Fiki Efendi Fikri Fadillah Fitrah Qalbina Fitrah Qalbina Gilang Ramadhan Hafizd Furqon Hasanuddin Hasanuddin Hasanuddin WS Hastuti Hastuti Hastuti Hastuti Hesty Kumala Sani Hukmanul Fikri Iqbal Danuarta Irshan Sepriza Irzal Irzal Jasman Julian Berlin Roland Tobing Junil Adri Junil Ardi Kelvin Rahmat Syah M Febriyan Baruna Putra M Fikri Maulana Rafi, Ikhsan Mega Oktaviani Melri Deswina Mhd. Fahri Meihanda Putra Miftahul Fikri Milana Milana mudhya_amalia afriardhy Muhammad Aulia Anugrah Muhammad Azim Muhammad Daffa Dzaky Muhammad Fadil Andira Muhammad Farhan Muhammad Iqbal Iski Muhammad Khattami Al Saidhi Muhammad Rizki Muhammad Rizki Anshari Muhammad Zainul Hasan Muklis Muklis Mulianti Mulianti Mulyadi Mulyadi Nabawi, Rahmat Azis Nelvi Erizon Nizwardi Jalinus Nurdin Hendri Nurwijayanti Oki Darwis Prima Putra Okky Syaifatul, Achmad Peri Irawan Purwantono Purwantono Purwantono, Purwantono Putra, Nandri Pratama Putra, Romi Rachman Setiawan Rasyid Ridho Harahap Refdinal, Refdinal Remon Lapisa Remon Lapisa Resti Apriliyanti Reynaldy Pasaribu Rhionaldo, Ananda Jafron Richardo Richardo Ricky Andrianto Rifelino Rifelino Rifelino Rihan Salim, Muhamad Rilgy Aulia Rizki Ramadhan Nasution, Muhammad Rizky Ema Wulansari Rodesri Mulyadi Salmat Salmat Salmat, Salmat Sani, Hesty Kumala Saputra, Ilham Dwi Satria, Andam Sigit Dwi Lesmana Silfi Chorillah Putri Siregar, Batu Mahadi Suci Andri Sudjono, Aldo Alfattah Sukardi Sukardi Sukardi, Sukardi Syafriade Putra Syahril Syahril Syahril Syahril Tasyah Tasyah Toto Sugiarto Tsung-Liang Wu Utami, Fathya Suci Wagino Wahyudi Wahyudi Wanda Afnison Waskito Waskito Waskito Waskito, Waskito Willyardo Putra Ramon Wulansari, Rizky Ema Yolli Fernanda Yopi Zekri Jenizah Putra Yopi Zekrri Jenizah Putra Yufrizal Yufrizal A Yufrizal Yufrizal Zainal Abadi Zainal Abadi Zuanda Maulana Nasution