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高峰 《初中生世界(初三物理版)》2008,(34):12-13
风能是世界上发展最快的能源,目前装机容量已达到5万兆瓦,大约相当于50个核电站。但这种无污染能源的利用也面临不少问题:比如它会产生噪音,旋转的叶轮机会干扰电视信号接收,而在没有风的时候,这些风车就显 相似文献
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李茂东 《小学生导刊(中年级)》2011,(1)
听新闻里说,城市一到用电高峰期,就会缺电,那多不方便啊。我观察了现在的风力发电站,主要是利用自然风使风车转动,风车带动发电机转动发电。可是,这种发电模式 相似文献
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By using ABAQUS/Explicit, the dynamic process of an offshore wind turbine(OWT) stricken by a ship of 5000DWT in the front direction is simulated. The OWT is located on a large-scale prestressing bucket foundation constructed by an integrated installation technique. According to the simulation results, under the ship collision, a cer-tain range of plastic zone appears within a local area of arc transition structure of the bucket foundation, and the con-crete plastic zone is seriously damaged. As the stress level of OWT tower is relatively low, the OWT tower is less af-fected. A great inertial force is generated at the top of the OWT tower as the mass of nacelle and blades is up to 400 t. The displacement of the tower is in the opposite direction of the ship collision at the end of 1 s under the action of iner-tial force. There is only a minor damage in the ship bow. Most of the kinetic energy is transformed into the plastic dissipation and absorbed by the arc transition structure of bucket foundation. 相似文献
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