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All Journal J@TI (TEKNIK INDUSTRI) Jurnal Ilmiah Desain & Konstruksi Tengkawang : Jurnal Ilmu Kehutanan SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Dinamika Teknik Mesin : Jurnal Keilmuan dan Terapan Teknik Mesin JURNAL DINAMIKA VOKASIONAL TEKNIK MESIN Machine : Jurnal Teknik Mesin PRODUCTUM : Jurnal Desain Produk (Pengetahuan dan Perancangan Produk) Jurnal Teknik Mesin Indonesia Infotekmesin Journal of Industrial Engineering Reswara: Jurnal Pengabdian Kepada Masyarakat Quantum Teknika Jurnal Kreatif : Desain Produk Industri dan Arsitektur REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Jurnal Teknologi dan Manajemen Jurnal Industri Furnitur dan Pengolahan Kayu (JIFKA) Majalah Teknik Mesin
Bahtiar Rahmat
Politeknik Industri Furnitur Dan Pengolahan Kayu
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Design of student chair using local wood with ergonomic approach and finite element-based structural validation Fitrianto, Taufik Ramadhan; Rahmat, Bahtiar; Anggiriani, Siska; Mulyosari, Desy; Nurhanifah, Nurhanifah; Nugroho, Alfani Risman; Affandi, Muhammad Afif
Productum: Jurnal Desain Produk (Pengetahuan dan Perancangan Produk) Vol 9, No 1 (2026)
Publisher : Institut Seni Indonesia Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24821/productum.v9i1.17625

Abstract

This study presents the design and structural validation of an ergonomic student chair using locally sourced Indonesian wood species. The research integrates anthropometric analysis, computer-aided design, and Finite Element Method (FEM) simulations to ensure both comfort and mechanical reliability. Anthropometric data from Indonesian students determined key seating dimensions, while FEM analysis evaluated structural performance under static loading conditions. Four wood species—teak (Tectona grandis), mahogany (Swietenia macrophylla), pine (Pinus merkusii), and sonokeling (Dalbergia latifolia)—were compared based on stress distribution, total deformation, and factor of safety (FoS). All materials satisfied the minimum safety factor of 1.5, confirming adequate strength for classroom use. Sonokeling achieved the highest FoS (2.47), while pine offered the best efficiency index (22.6) when performance was normalized by cost. The results demonstrate that locally available wood can provide safe, ergonomic, and economically feasible alternatives to imported materials. This integrated ergonomic–engineering approach supports sustainable, affordable, and human-centered furniture design for educational environments.
Simulasi Uji Beban Statis dengan Variasi Jenis Konstruksi pada Kekuatan Produk Stool Kayu Persegi Rahmat, Bahtiar
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 7 Issue 1 (March 2026)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v7i1.746

Abstract

Furniture products still been one of the export commodities that required attention. Contributing a value of more than USD 1 billion, consistency in maintaining the quality of furniture products needed to be improved. The construction or joints in furniture products had been the parts most prone to defects, cracks, or even fractures due to external forces, both during testing and usage. Prototype product testing required more time and resources. As a result, a method had been developed to obtain strength test data without creating a prototype, known as the Finite Element Analysis (FEA) method. The objective of this study is to measure the joint strength of a stool assembled with three types of construction: dowel pin, biscuit lamello, and open tenon joints. The external load had been adjusted according to the Indonesian National Standard (SNI) in terms of force position, magnitude, and direction. The results of the static load simulation shown that the application of all three types of construction had been able to withstand an external load of 1100 N effectively. The maximum von mises stress, which had been 9.647 MPa, had still been far below the material's yield stress of 41.2 MPa. Additionally, the maximum deflection and strain had only been 0.198 mm and 8.640e-04, respectively, in the product with biscuit lamello construction. The dowel pin construction had also produced a maximum stress of 6.031 MPa, a strain of 4.247e-04, and a maximum deflection of 0.170 mm, with a safety factor of 7.11. However, overall, the application of open tenon construction had been more recommended, as it had achieved the best safety factor of 13.630, with the maximum stress experienced by the stool being only 3.670 MPa.
Co-Authors Affandi, Muhammad Afif Anggiriani, Siska Anshah Silmi Afifah Arip Wijayanto Bahtiar, Fahmy Zuhda Desy Mulyosari F.Z. Bahtiar Fahmy Zuhda Bahtiar Fahrudin, Muhammad Fitrianto, Taufik Ramadhan Galih Prakoso Galih Prakoso, Galih Gilang Putra Paristiono Juwitasari, Dhian Katiko Imamul Muttaqin M.B.R. Wijaya Ma'wa, Safarah Putri Mohammad Burhan Rubai Wijaya Mohammad Burhan Rubai Wijaya Muhamad, Soleh Mulyosari, Desy Muttaqin, Katiko Imamul Nugroho, Alfani Risman Nurhanifah Nurhanifah Nurmadina Nurmadina Nurmadina, Nurmadina Purwanto, Agung Ari Soleh Muhamad Syauqi Darmapratama Taufik Ramadhan Fitrianto Wahyu Widiyanto Wahyu Widiyanto, Wahyu Wijaya , Mohammad Burhan Rubai Wijaya, Mohammad Burhan Rubai Y.B. Wirawan Yessi Nasia Ulfia Yuris Bahadur Wirawan Yuris Bahadur Wirawan Yuris Bahadur Wirawan, Yuris Bahadur