saat ini sya ingin sedikit mengulas tentang kegunaan pemodelan FE ulang sebagai pembelajaran dan latihan. Model FE yg digunakan adalah permasalahan struktur baja terutama mengenai sambungan berasal dari jurnal yg ada dan dapat diakses bebas. Maksud dari hal tersebut bukannya mencari sesuatu yg sudah diketahui, namun selain mengetahui lingkup masalah dan kesimpulan dari jurnal tersebut keadaan lainnya adalah diperlukan untuk kondisi lain pengaruh variable tertentu misal geometri dan pembebanan (parametric study). Setiap program FE mempunyai kemampuan yg berbeda dan biasanya dalam hal meshing, dan nonlinearitas material selain itu pemilihan penggunaan element shell atau solid, model las, baut dll. Hal tersebut yg kemungkinan menjadikan perbedaan yg dapat berguna untuk pembelajaran atau latihan, pemahaman dan olah kemampuan karena dituntut untuk remodeling CAD dan meshing serta review ulang (pararel checking) atau perbaikan (refined models) misal dikarenakan model sebelumnya yg ada terlihat kurang teliti dan penyederhanaan beberapa keadaan.
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(source : Jon K. Lindsey, HNTB (Kansas City) and LUSAS, 200x)
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Dalam simulasi atau pemodelan elemen hingga diperlukan beberapa tahap dan yg paling awal serta utama adalah definisi geometry(CAD) dan pembagian pias (meshing) selanjutnya penetapan material dan kondisi batas (beban. tumpuan, kontak). Berikut beberapa jurnal dalam format PDF yg terlihat cukup menarik untuk dilakukan pemodelan ulang untuk tujuan latihan atau pembelajaran tersebut. Sekalian juga dibuat sebagai daftar bahan bacaan mengenai struktur baja kuhusunya pada sambungan.
untuk tingkatan kerumitan model sederhana sampai menengah, sya biasanya dalam modeling CAD dan meshing automatis tetrahedral serta dasar penerapan masalah serta proses running solver sampai selesai membutuhkan waktu kurang dari satu jam. Namun kali ini meshing yg akan dicapai adalah jenis hexahedral sehingga diperkirakan membutuhkan waktu lebih pada tahap awal. Meshing jenis hexahedral mempunyai kelebihan dibanding tetrahedral otomatis yaitu pada komponen tipis hubungannya dengan penentuan jumlah pias elemen pada ketebalan.
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- Analytical Approach of Anchor Rod Stiffness and Steel Base-Plate Calculation under Tension, Tsavdaridis, KD, Shaheen, M, Baniotopoulos, C et al. (2016) link
- Studying the Behaviour of Base Plates with High Degree of Rigidity, M. R. Shafieifar & S. V. Khonsari (2012) link
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- Spatial Numerical Simulation of Locally Corroded Steel Plate Girder with Various End Panels, Nauman Khurram, Usman Akmal, Fatima Azhar, Abdelatif Salmi, Asif Hameed, Hiroshi Tamura, and Abdullah Mohamed (2022) link
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- Studying Bolt Force Distribution in Ultra-Large Capacity End-Plate Connections, A.A. Ramzi, I.M. El Aghoury, S.M. Ibrahim & A.I. El-Serwi (2019) link
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- Assessment of Rotational Stiffness for Metallic Hinged Base Plates under Axial Loads and Moments, Mahmoud T. Nawar, Ehab B. Matar, Hassan M. Maaly, Ahmed G. Alaaser, Ayman El-Zohairy (2021) link
- Rotational Stiffness Investigation and Parametric Analysis of a Novel Assembled Joint in Lattice Shells; Jianshe Xu, Yazhi Zhu, Jin Wu, Jin Lu, Qian Zhang, Wei Wang (2024) link