摘要
为了研究某型号挖掘机落物保护结构(falling-object protective structure,FOPS)的抗冲击性能,利用非线性有限元分析软件LS-DYNA模拟FOPS标准落锤冲击的实验室试验过程,讨论了FOPS受落锤冲击的破坏现象.结果表明:现有FOPS的整体刚度偏小,落锤中心位移过大,其性能不满足标准要求;采用正交试验设计,通过添加4根横筋杆、4根纵栅梁和2个支座,使FOPS的抗冲击性能满足国家标准要求.
In order to research the impact resistance of falling-object protective structures （FOPS）, non-linear simulations are performed in which FOPS is impacted by the standard drop hammer with the help of the finite element analysis software -- LS-DYNA. The breakage phenomenon is also discussed. The stiffness of the FOPS is so weak that the displacement of drop hammer is too large, which leads to the impact resistance of FOPS is unqualified. By orthogonal experimental design, adding four rails, four longitudinal grid beams and two supports, it makes the performance of the FOPS meet the requirements of the national standard.
出处
《扬州大学学报（自然科学版）》
CAS
北大核心
2013年第3期61-64,共4页
Journal of Yangzhou University：Natural Science Edition
基金
国家科技部火炬计划资助项目(2012GH530716)
关键词
挖掘机
落物保护结构
非线性有限元分析
结构改进
excavator
falling-object protective structures
non-linear finite element analysis
structure improvement
