风电吊装履带起重机臂架非线性分析与拓扑优化

发布时间：2018-04-09 16:01

本文选题：风电吊装　切入点：履带起重机臂架　出处：《太原科技大学》2017年硕士论文

【摘要】：随着我国经济转型的需要,对发电提出了较严格的环保要求。我国大量投资建设大型的风电项目,在平原、山地和浅海都建有大量风力发电场。履带起重机具有转弯半径小、可带载行驶和爬坡能力强等优点,为风电安装和维修提供了极大的便利,今后,大型履带起重机是风电吊装行业的重要设备之一。风电设备吊装过程的最大风险是臂架在特殊工况下承力不足和风电部件受臂下空间限制发生干涉碰撞,因此本文以专门吊装风电机组的履带起重机臂架为研究对象,采用主臂和鹅头臂组合结构及满足风电吊装额定起重量的工况,对臂架系统建模和分析,并在此基础上实现臂架拓扑优化设计,使臂架有起升能力强和重量轻的工程优点,从而提高风电吊装安全性。本文的主要研究内容如下:(1)风电吊装履带起重机臂架作业组合工况多样,臂架建模和分析的工作量是非常巨大的,因为每改变一次起重机的参数,都会导致大量的重复工作,因此,采用APDL建模,不仅修改起来非常方便且节约时间,同时为风电吊装起重机臂架的拓扑优化提供了便利。(2)本文对风电吊装履带起重机臂架进行大变形非线性分析,采用有限元非线性分析设计理论和遵循相关设计标准,研究不容忽视的臂架系统非线性特征,并对臂架模态进行计算,避免该起重机工作时与风电部件发生干涉而共振损坏,以增强风电部件、吊装人员和起重机自身的安全。(3)本文还对风电吊装起重机臂架进行了拓扑优化,削减风电吊装起重机臂架中承力杆件的多余体积,主要对臂架的典型尺寸、型钢号和腹杆的数量进行优化,其结果在满足制造规律和工程安全性的情况下降低了管材损耗,本研究具有较好的实用性。(4)本文采用可视化编程语言编写便于设计操作的人机交互界面的软件,实现了风电吊装履带起重机臂架快速建模分析和拓扑优化。该软件可查询和调用所需的数据库,并协助形成臂架分析模型。快速建模不局限于一种工况,能实现多种工况。编制的程序实现了软件内部调用工程有限元分析软件,并且将结果进行保存,以便于查看和传输结果文件。
[Abstract]:With the need of economic transformation in China, more stringent environmental protection requirements have been put forward for power generation.A large number of wind power projects have been invested in China, and a large number of wind farms have been built in plains, mountainous areas and shallow seas.Crawler crane has the advantages of small turning radius, strong ability to drive and climb slope, which provides great convenience for wind power installation and maintenance. In the future, large crawler crane is one of the important equipment in wind power hoisting industry.The biggest risk in the lifting process of wind power equipment is that the insufficient bearing capacity of the boom under special working conditions and the interference collision of wind power components limited by the space under the arm, so this paper takes the crawler crane boom of the special hoisting wind turbine unit as the research object.Using the combined structure of the main arm and geese head arm and satisfying the condition of lifting rated lifting weight of wind power, modeling and analyzing the boom system, and realizing the topology optimization design of the boom on this basis, the boom has the engineering advantages of strong lifting ability and light weight.Thus improve the safety of wind power hoisting.The main research contents of this paper are as follows: (1) Wind power hoisting crawler crane jib work combination is diverse, the work of jib modeling and analysis is very huge, because every time the crane parameters are changed, it will lead to a lot of repeated work.Therefore, using APDL modeling is not only very convenient to modify and save time, but also provides convenience for topology optimization of wind power hoisting crane jib.) in this paper, the large deformation nonlinear analysis of wind power hoisting crawler crane boom is carried out.Based on the finite element nonlinear analysis design theory and the related design standards, the nonlinear characteristics of the boom system can not be ignored and the modes of the boom are calculated, so as to avoid the resonance damage caused by interference with the wind power components when the crane works.In order to enhance the safety of wind power components, hoists and cranes themselves, this paper also optimizes the topology of the boom of wind power hoisting cranes, and reduces the excess volume of the bearing members in the boom of wind power hoisting cranes, mainly on the typical size of the boom.The number of section steel and web rod is optimized, and the result is that the loss of pipe is reduced under the condition that the manufacturing law and engineering safety are satisfied.This research has good practicability. (4) in this paper, visual programming language is used to write the man-machine interface software which is convenient to design and operate, and the fast modeling analysis and topology optimization of the boom of wind power hoisting crawler crane are realized.The software can query and call the required database and help to form the armband analysis model.Fast modeling is not limited to one working condition, and can realize many kinds of working conditions.The program realizes the software internal call of engineering finite element analysis software and saves the result so as to view and transmit the result file easily.
【学位授予单位】：太原科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TH213.7

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