A torsional vibration model of a ma

A torsional vibration model of a marine propulsion shafting system with damping and a flexible coupling is first analyzed. The natural frequencies and modes are determined, and
the forced torsional vibration response is then calculated using
the modal summation method [14]. The forced torsional vibration stress curves obtained from measured vibration at the
free end of the propulsion shafting are compared with the
results of the forced calculation of the torsional vibration.
Significant errors are found for some positions in the shafting system, and so an alternative approach to the prediction
method is presented.

Hasil (Bahasa Indonesia) 2:

Sebuah model getaran torsional dari sistem shafting propulsi kelautan dengan redaman dan kopling fleksibel pertama dianalisis. Frekuensi natural dan mode ditentukan, dan
respon getaran torsional paksa kemudian dihitung menggunakan
metode penjumlahan modal [14]. Kurva tegangan paksa getaran torsional yang diperoleh dari getaran diukur pada
ujung bebas dari shafting propulsi dibandingkan dengan
hasil perhitungan paksa getaran torsional.
Kesalahan signifikan yang ditemukan untuk beberapa posisi dalam sistem shafting, dan pendekatan alternatif untuk prediksi
metode disajikan.