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液压挖掘机工作装置的动特性灵敏度分析 总被引:1,自引:0,他引:1
应用振动模态敏度分析方法,对液压挖掘机工作装置动特性的影响因素进行分析,得到一些规律性认识,对液压挖掘机动态设计有重要的参考价值。 相似文献
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应用振动模态灵敏度分析方法,分析了铰点位置及姿态角对姿态角对注压挖掘机工作装置特性的影响,得到了一些规律性认识,对液压挖掘机的动态设计有重要的参考价值。 相似文献
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基于矩阵逼近的模型修正方法的研究 总被引:5,自引:0,他引:5
提出一种新的以试验振动和参数辨识的数据为参数,进行有限元分析模型修正的方法。该方法基于矩阵最佳逼近理论,运用Bayes估计原理来处理试验结果误差带来的试验模态可信度问题,求取分析模对试验获得的不完备模态的谱点的最佳逼近结果,最后获得质量阵的最小修正模型。 相似文献
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A static and dynamic collaborative optimization mode for complex machine system and its ontology project relationship are put forward, on which an agent-based structural static and dynamic collaborative optimization system is constructed as two agent colonies: optimization agent colony and finite element analysis colony. And a two-level solving strategy as well as the necessity and possibility for handing with finite element analysis model in multi-level mode is discussed. Furthermore, the cooperation of all FEA agents for optimal design of complicated structural is studied in detail. Structural static and dynamic collaborative optimization of hydraulic excavator working equimpent is taken as an example to show that the system is reliable. 相似文献
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