KERUSAKAN STRUKTUR AKIBAT GETARAN LOKAL PADA KAPAL YANG JARANG DIPERHATIKAN: ANALISIS DAN SOLUSI (STUDI KASUS)
DOI:
https://doi.org/10.15578/jkn.v9i1.6198Kata Kunci:
getaran kapal, struktur lokal, resonansi, perancangan ulangAbstrak
Pengabaian pengecekan potensi resonansi struktur lokal bisa berakibat serius pada kegagalan struktur. Studi ini menunjukkan kejadian tersebut, yang seharusnya bisa dihindari apabila pengecekan dilakukan pada tahap perancangan. Dalam studi ini identifikasi sederhana dilakukan untuk menentukan eksitasi paling dominan. Penentuan struktur lokal yg potensial beresonansi dilakukan dengan pengamatan visual dan dengan analisis menggunakan metode elemen hingga. Setelah resonansi dipastikan, perancangan ulang (redesign) dilakukan dengan memperhatikan kemudahan pelaksanaan di lapangan. Hasil redesign menunjukkan bahwa dengan menaikkan kekakuan konstruksi lokal maka terjadinya resonansi bisa digeser di luar daerah operasi kecepatan kapal untuk semua modes.
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