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[求助] 一篇关于浮体结构动力学的SCI论文审意见中有一个问题看不懂,想请教一下各位虫友。

评审人提的问题:
The assumption of re-setting the motion to zero at each timestep appears unrealistic. Dynamic positioning system consisting of generators, propellers, controllers, cannot instantly reposition a structure consisting of modules of ~300,000 tons. Typical reaction time of such system is 50-100 seconds or more before it can develop sufficient thrust to overcome the vessel's inertia.  This means the DPS can only control mean and low frequency vessel motions, not the wave-frequency motions, which would require too much power delivered instantly. To me, it is not necessary for you to make this assumption. You are solving the equations of motion of each module. You may assume the mean and low-frequency motions are small, as they are compensated by the DPS. Then, you utilize the mean body position to determine the loads and motions at each timestep. If you can explain this as linearizing the mean + low-frequency position, then the paper can be accepted.

    我做的是超大型浮式结构动力响应简化计算方法,这位评审老师提的问题我前面部分都能看懂,其大概意思就是:通过在每一个时间步长上重新设置这个运动归零的假设看起来并不切实际。动力定位系统包括发电机、螺旋桨、控制器,并不能立即的让一个包含了300,00t的多模块结构复位。在DPS系统能够发挥足够的推动力去克服舰船的惯性的前提下,这种系统典型的反应时间是50-100s或者跟多。这就意味着DPS仅仅只能够控制平均或者是低频船舰运动,而不是波频运动,这样将需要很大的立即传递能量。对我而言,你没有必要做这个假设。你正在求解每一个模块的运动。你可以假设这个平均或低频运动非常小,正如他们能够被DPS抵消掉。然后,在每一个时间步长情况下,你利用这个平均的浮体位置去确定荷载和运动。

    我现在主要就是最后一句话“If you can explain this as linearizing the mean + low-frequency position”我没看懂,请各位虫友大神们帮帮我,帮我看看,解解惑行吗?万分感谢了。
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