形成通用运动装置的计算方案,旨在调节具有有限质量自由度的弹性系统的自然振动频谱,其中运动方向平行,但不在同一平面内

Leonid Lyakhovich, P. Akimov, Z. Galyautdinov, A. Plyaskin
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引用次数: 0

摘要

迄今为止,对于一些具有有限质量自由度的弹性系统,其质量运动方向平行且位于同一平面内,已开发出创建附加广义定向约束和广义定向运动学装置的方法。每个广义定向约束都会增加,每个广义定向运动学装置都只会将一个选定的固有频率值降低到预定值,而不会改变其余的固有频率和固有模态。早先,对于质量自由度有限的弹性系统,质量运动方向平行,但不在同一平面内(例如板),开发了计算附加刚度矩阵的方法和开发附加广义定向约束计算方案的方法。此外,针对此类系统,早些时候还提出了一种计算特殊矩阵的方法,其中考虑到了决定通用目标运动装置的附加惯性力。同时,还没有提出运动装置计算方案的开发方法。论文的第一部分专门讨论了为此类系统开发通用目标运动学装置计算方案的方法。论文考虑了具有一个活动度的杆系统的计算约束方案的变体。研究揭示了这种定向运动装置的一些特殊性质。论文的第二部分专门讨论了相应的分析样本。
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ФОРМИРОВАНИЕ РАСЧЕТНЫХ СХЕМ ОБОБЩЕННЫХ КИНЕМАТИЧЕСКИХ УСТРОЙСТВ, ПРИЦЕЛЬНО РЕГУЛИРУЮЩИХ СПЕКТР ЧАСТОТ СОБСТВЕННЫХ КОЛЕБАНИЙ УПРУГИХ СИСТЕМ С КОНЕЧНЫМ ЧИСЛОМ СТЕПЕНЕЙ СВОБОДЫ МАСС, У КОТОРЫХ НАПРАВЛЕНИЯ ДВИЖЕНИЯ ПАРАЛЛЕЛЬНЫ, НО НЕ ЛЕЖАТ В ОДНОЙ ПЛОСКОСТИ
To date, for some elastic systems with a finite number of degrees of mass freedom, in which the directions of mass movement are parallel and lie in the same plane, methods have been developed for creating additional generalized targeted constraints and generalized targeted kinematic devices. Each generalized targeted constraint increases, and each generalized targeted kinematic device reduces the value of only one selected natural frequency to a predetermined value, without changing the remaining natural frequencies and natural modes. Earlier, for elastic systems with a finite number of degrees of mass freedom, in which the directions of mass motion are parallel, but do not lie in the same plane (for example, plates), an approach for the computing of a matrix of additional stiffness and a method for the development of computational schemes of additional generalized targeted constraints were developed. Also earlier, for such systems, an approach was proposed for the computing of a special matrix with allowance for additional inertial forces that determine a generalized targeted kinematic device. At the same time, the method of development of computational schemes of kinematic devices was not proposed. The first part of the paper was devoted to approach, that made it possible to develop computational schemes of generalized targeted kinematic devices for such systems as well. A variant of the computational scheme of constraint for the rod system with one degree of activity was considered. Some special properties of such targeted kinematic devices were revealed. The distinctive second part of the paper is devoted to corresponding samples of analysis.
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来源期刊
CiteScore
0.80
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0.00%
发文量
43
审稿时长
4 weeks
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