摘要
针对柔性化发展以及随之而来的高耸结构稳定性问题,对结构仿生理论在风力机塔架设计中的应用进行了研究。选取竹子为生物原型,基于层次分析法计算出竹子与塔架具有较高的相似度,验证生物选型的合理性。在此基础上,提取竹子的节状特征应用于风力机塔架的结构,设计具有加强节特征的仿生塔架,并采用有限元方法对仿生设计前后的塔架结构力学性能进行对比分析。结果表明:具有5个加强节的仿生塔架较原型塔架在刚度和极限承载能力等方面均得到提高,应力分布特点更加合理。验证了仿生理论在塔架设计中的有效性,为风力机塔架的结构设计提供了新方法。
Aiming at the stability problems followed by the flexibility development of high-rise structural,the application of structural bionics design theory in the design of wind turbine tower was studied. Bamboo was been chosen as the biological prototype and verified by calculating the similarity between bamboo and tower based on analytic hierarchy process（AHP）.The bionics tower was designed with five stiffening rings which were extracted from the segment feature structure of bamboo.By using the Finite Element Method（FEM）,mechanical property of the prototype tower and the bionics tower were analyzed.Results show that the mechanical property of bionics tower is better than the prototype tower,both in stiffness and in the stress distribution range,at the same time,the carrying capacity has been improved. The above research verified the rationality of the using of the bionics design theory in the design of the tower and provided a new method for the structural design of wind turbine tower.
出处
《机械设计与制造》
北大核心
2016年第5期53-55,60,共4页
Machinery Design & Manufacture
基金
国家自然科学基金(51165019)
甘肃省自然科学基金(1308RJYA018)
关键词
仿生设计
风力机
塔架
相似度
加强节
Bionics Design
Wind Turbine
Tower
Similarity
Stiffening Ring
