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All Journal Mechatronics, Electrical Power, and Vehicular Technology Journal of Engineering and Technological Sciences Padjadjaran Journal of Dentistry Mesin
Tatacipta Dirgantara, Tatacipta
Lightweight Structures Research Group, Aeronautics & Astronautics Department Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung
Biochemistry, Genetics & Molecular Biology Dentistry Electrical & Electronics Engineering Engineering Health Professions Immunology & microbiology Mechanical Engineering Medicine & Pharmacology Public Health

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Stress distribution analysis of seat and non-seat preparation design for orden cast post using 2D finite element method Miranda, Aldilla; Subrata, Gantini; Hasratiningsih, Zulia; Dirgantara, Tatacipta
Padjadjaran Journal of Dentistry Vol 23, No 3 (2011): November 2011
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2511.83 KB) | DOI: 10.24198/pjd.vol23no3.14032

Abstract

The post is used to retain a core that supports the definitive restoration. One of the important factors in the prognosis of post-endodontic restoration system is the post space preparation design which effects to the distribution of stresses. The purpose of this study was to analyze the effect of post space preparation design at the cervical area of the root to the stress distribution on static loading using (two dimensions) finite element method. This was a numeric simulation study using two 2D digital models: seat and non-seat design of maxillary central incisors using commercial software of finite element. The procedures of pre-processing, solution, and post-processing were used to evaluate the distribution of internal stress caused by static loading 110 N which was applied at 135° angle with tooth longitudinal axis on the palatal surface of the core. Both models of restoration with cast post-core of Orden alloy were divided into 15,400 triangular elements. This study showed that the stress distribution from the loading location to the location of stress concentration and the value of maximum stress at cervical part of the root at non-seat design was lower than the seat design (seat design 3.69 times greater than non-seat). This study proved that non-seat design distributes stress better than seat design.
KAJI NUMERIK GROUND PAD SHOE KENDARAAN TEMPUR DENGAN MODEL MATERIAL HYPERELASTIC Rachmat, Angki Apriliandi; Dirgantara, Tatacipta; Suweca, I Wayan; Mardiyati, Yati
Mesin Vol 30 No 1 (2024)
Publisher : Faculty of Mechanical and Aerospace Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/MESIN.2024.30.1.5

Abstract

One of the important components on a combat vehicle is the ground pad shoe (GPS) or track pad. GPS that has been developed at this time mostly uses rubber material. Rubber raw materials themselves are found in Indonesia in large amount. Indonesia left 3 million tonnes of natural rubber unprocessed in 2018. On the other hand, natural rubber research is quite expensive and takes a long time to become a product. To make rubber products is needed special molds and tests. To solve the high costs and long time involved in rubber research, it is necessary to carry out numerical research. In this study, a numerical study of GPS rubber for combat vehicles was carried out with a hyperelastic material model. The research was conducted experimentally and numerically. Tensile testing is carried out on imported GPS samples which are then used as comparison data for numerical studies. The Mooney-Rivlin, Neo-Hookean, Yeoh, and Ogden hyperelastic models were varied to get the stress and strain values ​​closest to the experimental test. The results of the numerical study show that the best hyperelastic model for the imported GPS rubber model is the Neo-Hookean model. The tensile strength of GPS according to the experimental tensile test results is 16.93 MPa, while the result of the finite element method (FEM) is 16.75 MPa. The GPS modulus 200% according to the experimental tensile test results is 14.7 mm/mm, while the FEM result is 15.3 mm/mm. The difference between the FEM and experimental test values ​​for tensile strength and modulus 200% are below 5%. Maximum stress on GPS is 4,4 MPa and safety factor 3,8.
Co-Authors AA Sudharmawan, AA Abd. Rasyid Syamsuri Aditianto Ramelan Afdhal Afdhal Agustinus Dimas Aldilla Miranda Andi Kuswoyo Annisa Jusuf Annisa Jusuf Annisa Jusuf, Annisa Cakranegara, Pandu Adi Citra Asti Rosalia Dadang Rukanta Dimas, Agustinus Djoko Suharto F Ferryanto Ferryanto, F Gantini Subrata, Gantini Golfianto, Hari Hardianto, Toto Hari Golfianto Hari Tjahjono Hari Utomo Haris Wahyudi Herman, Indria Hermawan Judawisastra I Ketut Adi Sentana Putra I Wayan Suweca Ichsan Setya Putra Ike Sri Rejeki Indria Herman Jam'ah Halid Janti Rusjanti, Janti Leonardo Gunawan Leonardo Gunawan, Leonardo Mahyuddin, Andi Isra Mardiyati, Yati Mihradi, Sandro Mipi Ananta Kusuma Muhammad Hamzah Farrasamulya Nunung Rusminah Nur Ridhwan Muharram Putra, Ichsan Setya Rachmat, Angki Apriliandi Ramadhan, Muhammad Hisyam Reza Widianto Sudjud Rochim Suratman RR. Ella Evrita Hestiandari Santosa, Sigit Puji Satrio Wicaksono Satrio Wicaksono Satrio Wicaksono Setya Putra, Ichsan Sri Raharno Suharto, Djoko Syarif Hidayat Widia Hafsyah Sumarlina Ritonga, Widia Hafsyah Sumarlina Zulia Hasratiningsih, Zulia