摘要
基于数字化独立单元驱动精梳机机架的低阶固有频率及结构质量对其设计参数灵敏度分析的结果,选取其中较高灵敏度设计参数为优化设计变量,以机架结构质量最轻为目标,同时考虑满足前几阶低阶固有频率避开周期激励基频与倍频的性能要求,建立机架的ANSYS APDL参数化有限元模型,对机架系统结构进行优化设计,得以在轻量化下使机架系统具有较高的动态承载能力.该优化设计方法可有效减少机架系统有限元模型优化设计的规模,提高优化分析计算的效率,进而对推进较大型复杂结构有限元模型的动态性能优化设计具有借鉴作用.
The design parameters with higher sensitivity relatively were choosen as the design variables of optimization based on the analytic results of sensitivity of the low-order natural frequency and structural mass of digital independent-unit driven to design parameters,and the goal to minimize the weight of the frame was set.Then,in order to sustain a higher dynamical load-bearing properties with a lightweight frame,the ANSYS ADPL parameterized finite element model was established to optimize and design the frame structure.The optimal model meets the requirement that the first few orders of natural frequencies do not coincide with the periodic and multiplier excitation fundamental frequency.The optimization design method has the advantages of reducing the scale of optimal design of the finite model of frame system and improving the efficiency of optimal analysis.It also provides a referential approach for the optimal design of the dynamic performance of large-scale complex frame system.
出处
《东华大学学报（自然科学版）》
CSCD
北大核心
2017年第2期251-253,292,共4页
Journal of Donghua University(Natural Science)
关键词
参数化有限元模型
低阶固有频率
灵敏度分析
设计参数
优化设计
parametric finite element model
low-order natural frequency
sensitivity analysis
design parameter
optimization design
