移动式链斗卸船机的有限元分析

发布时间：2018-02-13 07:17

本文关键词： 移动式链斗卸船机有限元分析局部应力倾覆性 HyperMesh　出处：《安徽工业大学》2016年硕士论文　论文类型：学位论文

【摘要】：移动式链斗卸船机在港口作为卸船设备已经显得越来越重要,随着链斗卸船机不断的发展以及自身结构设计上的优点,逐步的被国内外大型专业化码头所利用。目前,随着船舶结构的大型化,导致链斗卸船机整机尺寸随之加大,并且其自身结构也相当复杂,所以它的应力分布情况相当复杂。因此,本文针对该问题,对卸船机进行整机强度、刚度分析,为设计者提供各个结构的应力、应变的分布情况,为之后对整机的改进设计以及维护提供重要的数据。本文对300吨/小时轨道移动式链斗卸船机进行框架结构上的分析,主要利用HyperMesh与ANSYS联合仿真有限元分析。在HyperMesh软件中通过简化处理以及ANSYS操作界面中的装配技术对卸船机整机进行有限元建模,联合ANSYS有限元分析软件进行卸船机的整机有限元分析。通过结果后处理分析得出卸船机钢结构最大应力、局部应力集中部位,并且对其原因进行分析,将不能满足设计要求的最大应力值和局部应力值,通过一系列的改进措施使其满足材料Q235的屈服极限。对卸船机整机进行抗倾覆性分析,利用稳定力矩法进行校核分析,得到卸船机在不同工况下倾覆性状态;对卸船机进行模态分析,在ANSYS软件中输出前五阶固有频率和振型,其中最小固有频率为0.73625HZ,对比各个机构转速发现不会发生共振现象,为以后设计者的后续分析提供了帮助。通过以上分析,可以准确的得出卸船机在不同工况时应力、应变分布情况,以及倾覆性情况,为设计者在后续结构上的改进以及工作人员对卸船机钢结构有了针对性的维护提供了可靠的依据。这样就大大的降低了生产成本,保证设备效益最大化,对卸船机的安全使用具有重要的意义。
[Abstract]:Mobile chain bucket unloader has become more and more important as unloading equipment in port. With the development of chain bucket unloader and the advantages of its structure design, it has been gradually used by large specialized wharves at home and abroad. With the large size of ship structure, the size of chain bucket unloader increases, and its structure is very complex, so its stress distribution is very complicated. Therefore, this paper deals with the strength of ship unloader. Stiffness analysis, to provide designers with the stress and strain distribution of each structure, This paper analyses the frame structure of 300 t / h track movable chain bucket unloader. The finite element analysis of ship unloader is mainly simulated by HyperMesh and ANSYS. In HyperMesh software, the finite element model of ship unloader is built by simplified processing and assembly technology in ANSYS operation interface. The finite element analysis of ship unloader is carried out with ANSYS finite element analysis software. The maximum stress and local stress concentration part of the steel structure of ship unloader are obtained through the post-processing analysis of the results, and the causes are analyzed. The maximum stress value and local stress value, which can not meet the design requirements, can meet the yield limit of material Q235 through a series of improvement measures. The overturning resistance of the ship unloader is analyzed, and the stability moment method is used to check and analyze. The overturning state of ship unloader under different working conditions is obtained, and the modal analysis of ship unloader is carried out, and the first five natural frequencies and modes are outputted in ANSYS software, in which the minimum natural frequency is 0.73625HZ. by comparing the rotational speed of each mechanism, it is found that there will be no resonance phenomenon. Through the above analysis, we can accurately get the distribution of stress, strain and capsize of the ship unloader under different working conditions. It provides a reliable basis for the designers to improve the subsequent structure and the staff to maintain the steel structure of the ship unloader, which greatly reduces the production cost and ensures the maximum benefit of the equipment. It is of great significance to the safe use of ship unloader.
【学位授予单位】：安徽工业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U653.928.1

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