摘要
为了研究龙门铣床横梁结构的静动态性能,根据龙门铣床横梁属于薄壁结构这一特点,基于板壳理论采用板壳单元对横梁结构进行了建模,在方案设计时建立了3种结构形式的横梁。在方案比较中,应用有限元方法对3种横梁结构的静动态性能进行了仿真,得到了静载荷作用下3种横梁的变形、应力分布和固有频率以及加工时的谐响应。通过对3种横梁静动态性能的比较,证实O型梁的静动态特性优于其它两种结构形式。
To study the static and dynamic performance of beam gantry milling machine structure,three kinds of beam structure form are established in designing the beam based on the theory of plate and shell and the beam modeling,considering the fact that the beam of gantry milling machine belongs to the thin-walled structure. In scheme comparison,three kinds of static and dynamic properties of beam structure are simulated by using the finite element method,and three kinds of beam deformation,stress distribution and the inherent frequency and harmonic response of processing under the action of the static load. By comparing the three kinds of static and dynamic performance of the beam,the study confirms that the O beam static and dynamic characteristics prove to better than the other two kinds of structure forms.
出处
《陕西理工学院学报（自然科学版）》
2015年第6期7-13,共7页
Journal of Shananxi University of Technology:Natural Science Edition
基金
陕西省科技统筹创新工程计划项目(2012JTDZ)
陕西理工学院博士基金资助项目(42905)
陕西理工学院研究生创新基金资助项目(SLGYCX1429)
关键词
龙门铣床
横梁
板壳理论
结构设计
gantry milling machine
beam
plate and shell theory
structure design
