【作者】 张俊杰；

【导师】 唐景林；

【作者基本信息】 燕山大学 ， 材料加工工程， 2012， 硕士

【摘要】 巨型模锻压机是国家综合实力的一种象征，它充分体现了一个国家的大型装备制造生产能力、综合技术水平以及经济与国防实力。800MN模锻液压机是目前世界上最大的模锻液压机，它的建立可以解决大型整体结构件毛坯制造的瓶颈，促进大型模锻件制造技术的消化、吸收和创新，在国防和航空工业的模锻件生产中起着不可替代的作用，其政治、经济意义重大。由于巨型模锻压机要承受超大的载荷，因此有很高的结构强度和刚度要求，制造难度极高，造价昂贵，并且建造数量十分有限，为解决其可制造性问题，该压机采用了以组合结构为主要特征的大量新结构。为确保这一新的重型装备的一次制造成功，对该设备进行本体结构强度、刚度分析和疲劳寿命预测是一项必做的前期工作。本文以800MN大型模锻液压机的关键承力结构C形板组合机架为研究对象，使用大型非线性有限元软件MSC. Marc从静力学角度对其应力应变及变形情况进行了分析研究；用疲劳分析软件MSC. Fatigue对及关键部件进行了疲劳寿命分析；并且制作了800MN模锻液压机机架1:25金属物理模型，用电测法对关键构件-C形板、大拉杆和上十字键在预紧和承载工况下的应力进行了测试。从数据对比来看，仿真结果与试验结果基本吻合，说明了仿真结果的可信性。论文的研究成果为800MN模锻压机的设计制造提供了理论依据。更多还原

【Abstract】 Heavy die-forging hydraulic press is a national symbol of a country’s comprehensivestrength, because it fully shows the ability of big equipment manufacturing, the technicallevel, and the capacity of economics and national defense of a country. The press will playan irreplaceable role in forging pieces production for defense and aerospace industry. Atpresent, the 800 MN die-forging hydraulic press is the largest die-forging hydraulic pressin the world. It is required for high strength, high stiffness in the structure of the pressbecause high load will be undertaken, meanwhile the high expenses very limitedproduction quantity, and extreme manufacturing difficulties are the typical characyeristicsof this equipement. In order to build successfully, a large number of new structures, as itsmain structure characteristics, are adopted in its structure. This heavy die-forginghydraulic press has a great significance in political and economics .To ensure one-timesuccess in manufacture of the new heavy equipment, it is necessary to analyse the intensity,stiffness and fatigue life of the body structure previously.In this dissertation, taking the main load-carrying body structure, C–form frame of800 MN die-forging hydraulic press as the research object, the stress, strain anddeformation are analysed using the large nonlinear FEM software MSC. Marc, thestructure fatigue life of key components of the body is analysed with MSC. Fatigue, ametal physical model of 1:25 of the C-frame is made and the stress of key components,such as C-plates, main prestress rods as while as the upper and lower cross keys, under thepretight and operation load. After contrast between the results from simulation andexperiments, conclusion can be made that the simulation result is credibility. The researchresult can provides theoretical support for the design and manufacturing of the 800 MNdie-forging hydraulic press.更多还原