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structure modify
相关语句
  结构修饰
     Study on structure modify in porous alumina films
     多孔阳极氧化铝膜的结构修饰研究
  结构修改
     A Study on the Technology of Design and Structure Modify for the Main Structure System of NC Machine Tools
     数控机床主结构设计技术及结构修改技术的研究
短句来源
  “structure modify”译为未确定词的双语例句
     The structure Modify of PET Aggregation by Supercritical CO_2
     超临界CO_2流体对涤纶纤维聚集态结构的修饰
短句来源
     artificial simulation eazyme, and enhancement reagent. To reconstruct the original molecule structure, modify the function group, develop new reaction system, optimize reaction condition, and control reaction speed, that is to say, to improve the analytical ability of the reaction and simplify the procedure, is also the most active study area, the most basal work.
     探索新的显色试剂、离子和分子识别试剂、人工模拟酶和增效试剂,改造原有试剂的分子结构、进行功能团修饰以及研究新的反应体系,优化反应条件和控制反应速度等,力求进一步改善反应的分析性能,简化操作步骤。
短句来源
     Based on the analysis results, the paper gives a structure modify scheme, and the new fuel pump bracket has succeeded in the random vibration test.
     并在此基础上提出改进方案,改进后的油泵托架成功地通过了随机振动试验。
短句来源
     According to these analysis results, the paper gives a structure modify scheme which can reduce the stress concentration effectively.
     根据上述分析计算结果,本文提出了结构改进的方法,改进后托架通过在底部增加圆滑过渡的凸台结构和增开两个卸载槽而有效的消除了焊接部位应力集中的状况。
短句来源
     The most key method of concurrent design is integrated analysis technique, which can dynamic evaluate whole performance of design scheme, compute optical performance as a function of temperature and structure, modify design parameter, achieve optical/mechanical/thermal concurrent design.
     集成分析法对设计方案综合性能的动态评估是一体化设计的核心,通过分析系统热光学性能,指导修改设计参数,实现系统光/机/热同步设计。
短句来源
  相似匹配句对
     The structure of P.C.
     大跨度预应力混凝土斜拉桥(简称P.C.斜拉桥)结构不仅经济、美观,而且可以采用悬臂浇筑方法施工、使这一桥型得以迅速推广。
短句来源
     " ,the structure
     兼及了“V他+……”结构的特征。
     Aim To modify the structure of dehydroepiandrosterone (DHEA) .
     目的 通过生物转化对去氢表雄酮进行结构修饰 ,以期获得更有意义的转化产物。
短句来源
     Study on structure modify in porous alumina films
     多孔阳极氧化铝膜的结构修饰研究
     Finally is to modify.
     最后还需修改。
短句来源
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this paper puts forward a structure modified plan for existent steady flow variable vane pump, derives a mathematical model describing static and dy- namic performance of the pump, and provides a theoretical basis for selecting rea sonable parameters.

本文对现有的稳流式变量叶片泵提出了结构改进方案,推导出描述该泵静动态性能的数学模型,为提高该泵的稳流精度和动态稳定性提供了选择合理参数的理论依据。

As a non-damping or proportionally damped structural system has been modified by viseoelastic damping, it becomes a viscoelastically damped system. For predicting its dynamic properties, mechanic property of viscoelastic material depends on frequency, for a large struetural system, a large nonlinear complex eigenvalue problem has to be solved. This needs a lot of complex computations and is more expensive. Usually it is not so easy to redlize. In this paper, based on the method of eigenvalue modification...

As a non-damping or proportionally damped structural system has been modified by viseoelastic damping, it becomes a viscoelastically damped system. For predicting its dynamic properties, mechanic property of viscoelastic material depends on frequency, for a large struetural system, a large nonlinear complex eigenvalue problem has to be solved. This needs a lot of complex computations and is more expensive. Usually it is not so easy to redlize. In this paper, based on the method of eigenvalue modification [1-4], a method for local viscoelastic damping dynamic modification is proposed. By which, the complex modal parameters of the structure modified by viscoelastic damping is predictable only based on the real modal parameters of the original structure. An iterative algorithm for complex eigenvalues and amount of modificatino is also developed, and a computed example shows that the method and algorithm are zaliable and effective. Therefor, the problem of nonlinear complex eigenvalue due to the complex elastic modulus of viscelastie material varied with frequency is avoided.

无阻尼或比例阻尼结构系统经粘弹阻尼修改后,可变为粘弹性阻尼系统。要获得其动特性,需求解复特征值问题。但是,随之带来了计算量大、费用高等问题。尤其是粘弹性材料特性随频率而变化,需求解高阶非线性复特征值问题,这对于一个自由度较大的结构,计算量太大,通常较难实现。本文在特征值修改方法的基础上,提出粘弹性阻尼局部动力修改方法,即仅需已知原结构系统的实模态参数,就可求出粘弹阻尼修改后系统的复模态参数。还发展了特征值和修改量同时迭代方法,有效地解决了粘弹材料复模量随频率变化引起的非线性复特征值问题。

This paper puts forward a frequency response function method by which the dynamical characteristic of a structure modified can by culculated. It is considered in this method that the changes of physical parameter matrices (mass, damp, rigidity) are produced when structure is modified. Taking advantage of Bolean matrix, the increasing parts of physical parameter matrices which are produced by local modification are represented with decomposing forms; and the frequency response function matrix...

This paper puts forward a frequency response function method by which the dynamical characteristic of a structure modified can by culculated. It is considered in this method that the changes of physical parameter matrices (mass, damp, rigidity) are produced when structure is modified. Taking advantage of Bolean matrix, the increasing parts of physical parameter matrices which are produced by local modification are represented with decomposing forms; and the frequency response function matrix of modified system is derived. Afterward, the modal parameters of modified system are fitted. The advantages of the method are that increases of physcal parameter may be not limited and the calculating procedure is more simple. The calculated frequency response function is theoretically accurate.

本文提出一种计算结构修改后振动特性的频率响应函数方法。此法考虑结构修改时振动系统的物理参数矩阵(质量、刚度、阻尼)的同时变化,利用位置矩阵,将局部修改时产生的物理参数矩阵的增量部分分解表示。推导出修改后振动系统的频率响应函数矩阵,进而拟合出模态参数。此法对物理参数的改变量的大小可以任意,且计算过程简单。

 
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