摘要
为对锻压装备优化设计、制造、故障诊断提供理论依据,采用刚柔耦合动力学模型,以315t液压机实验平台为研究对象,研究其动力学性能。基于有限元模态分析,得出了预应力结构的工程意义。应用动力学分析软件ADAMS,提出了创建液压机刚柔耦合模型的研究方法,揭示了系统动力学特性与时变负载的关系。数值仿真结果表明:预应力结构能够有效地增加系统刚度,减小结构弹性变形;同时,平衡系统能够显著地降低偏载的不利影响。
In order to provide theory basis for optimization,manufacture and fault diagnosis of hydraulic forging press,the dynamic performance of the rigid-flexible coupled model was studied taking the 315 t hydraulic forging press as the investigation object.The advantage of pre-stressed structure was investigated based on modal analysis.The approach to establish the rigid-flexible model was proposed and the relationship between the dynamic performance and time-varying load was presented based on the ADAMS platform.The results show that with the pre-stressed structure,the stiffness increases and the elastic deformation reduces effectively,and the negative influence of the unbalanced load is eliminated effectively by the balancing cylinders.
出处
《锻压技术》
CAS
CSCD
北大核心
2013年第4期92-96,共5页
Forging & Stamping Technology
基金
国家自然科学基金资助项目(51005251)
国家重点基础研究发展计划("973"计划)项目(2011CB706802)
金属挤压/锻造装备技术国家重点实验室开放基金资助项目
关键词
锻压机
刚柔混合
冗余约束
多体动力学
forging press
rigid-flexible coupling
redundant constraints
multi-body dynamic
