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中南大学学报(自然科学版)

Journal of Central South University

第48卷    第3期    总第271期    2017年3月

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文章编号:1672-7207(2017)03-0650-08
TBM刀盘系统多自由度耦合振动响应灵敏度研究
凌静秀1,孙伟1,霍军周1,邓立营2

(1. 大连理工大学 机械工程学院,辽宁 大连,116024;
2. 北方重工集团有限公司,辽宁 沈阳,110141
)

摘 要: 研究冲击载荷作用下TBM刀盘的振动特性。在已有TBM刀盘系统耦合动力学模型的基础上,运用直接导数法推导动态响应灵敏度的表达式,建立适用于TBM刀盘强迫振动响应的灵敏度分析方法。以辽西北引水工程项目的刀盘系统参数为例,采用协同数值求解方法计算刀盘振动响应及其灵敏度,并分析刀盘质量分布对响应的影响。研究结果表明:刀盘振动响应对分体质量的灵敏度最大,且各方向灵敏度均不为0,说明质量参数的变化会影响刀盘各方向振动,而刀盘支撑刚度仅影响其相关联的振动,刀盘轴向振动响应对轴向支撑刚度的灵敏度约为倾覆方向的2倍;刀盘分体质量分数控制在13%~14%区间时,结构振动最小。

 

关键字: TBM刀盘系统;多自由度耦合;直接导数法;响应灵敏度

Sensitivity of vibration response about TBM cutterhead system with multi-degree-of-freedom coupling
LING Jingxiu1, SUN Wei1, HUO Junzhou1, DENG Liying2

1. School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China;
2. Northern Heavy Industry Group Ltd. Co., Shenyang 110141, China

Abstract:The vibration characteristics of TBM cutterhead under the impact loads were studied. The expression of dynamic response sensitivity was deduced by the direct derivative method, and a method of sensitivity analysis which is suitable for forced vibration response of TBM cutterhead was established, based on the coupling dynamics model of TBM cutterhead system. Taking a hard rock TBM cutterhead system of a water tunnel project in northwest Liaoning Province as an application instance, the vibration responses and sensitivities of cutterhead were calculated by a collaborative numerical method, and the influences of cutterhead mass distribution on responses were analyzed. The results show that the vibration response sensibility to the mass of cutterhead piece is maximum, and the none of value in each direction is equal to 0, which shows that the mass parameter variation can affect the cutterhead vibrations of each direction. Moreover, the support stiffness of cutterhead only affects the associated vibration, and the axial vibration response sensibility to the axial support stiffness is about 2 times of that in overturning direction. Furthermore, the cutterhead vibration is minimum when the mass fraction of cutterhead piece is controlled in the range of 13%-14%.

 

Key words: TBM cutterhead system; multi-degree-of-freedom coupling; direct derivative method; response sensitivity

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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