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- Accounting the key point of building dynamic model to be setting up 2 steps tensor T(subscript ia) and 3 steps tenser T(subscript ibc) and assembling the equivalent mass matrix. 建模时重点确定二阶张量、三阶张量和组装等效质量阵,建模过程简单、快捷,通用性强。
- equivalent mass matrix 等效质量阵
- The lumped mass matrix is a diagonal matrix. 集中质量阵是一个对用阵。
- The belt sag, the primary run resistance, the equivalent mass of roller are easily neglected or simplified in the previous dynamic design. 如果对带式输送机的动态特性有了深入的了解,同时考虑设计的经济性,则可对其进行动态、优化设计与合理控制。 近几年来对于此问题,国内外许多专家和学者都做出过很多的研究和论述,但是输送带的悬垂度、主要运行阻力及托辊的等效质量是动态分析模型中经常被忽略或简化的三个因素。
- Based on the principle of equivalent mass, it tests the impelling vibration in sonic wave vibration system, introduces the experiment condition and process. 为此参照等效质量原理对声振系统进行了激振试验,并对试验条件和试验方法进行了介绍。
- Based on the principle of equivalent mass,it tests the impelling vibration in sonic wave vibration system,introduces the experiment condition and process. 为此参照等效质量原理对声振系统进行了激振试验,并对试验条件和试验方法进行了介绍。
- However, the absolute angle is not changed obviously at rotor inlet when the equivalent mass flow is reduced, but it is increased obviously at rotor outlet. 并且,随着换算质量流量的减少,转子进口绝对流动角变化不明显,而转子出口的绝对流动角则明显增加。
- Dynamics theory and the “mass spring dashpot” system model were used to develop an equilibrium equation.The mass matrix, elasticity matrix and damping matrix were given. 从机械系统动力学理论出发,参照振动系统的“质量-弹簧-阻尼”模型,分析推导了系统动力学平衡方程,得到了质量矩阵、弹性矩阵及阻尼矩阵的具体表达式。
- The complex modal analysis method is generalized to the cases in which stiffness matrix may be singular and mass matrix,damping matrix and stiffness may be nonsymmetric. 把复模态分析法推广到刚度矩阵可以奇导且质量矩阵、阻尼矩阵和刚度矩阵均不必为对称的情形。
- The expression of the equivalent mass and equivalent impedance on a side of the transducer are educed, moreover, the expression of mechanical quality factor and band wide are obtained . 推导出在同一参考面穿孔换能器的等效质量、等效电阻的表达式,进一步得到换能器的机械品质因数和带宽的表达式,得到穿孔尺寸与这些参数之间的关系,从而设计出宽频带换能器。
- A mass matrix of guy clement is deduced according to the principle of virtual work, and the nonlinear static and dynamic incremental equilibrium equation of guyed towers is established. 基于虚功原理推导了索单元的一致质量矩阵。 建立了桅杆结构的非线性静、动力增量平衡方程。
- For the reason of accuracy, efficiency and low cost simulation, the lumped mass matrix and consistent mass matrix should be used for low order modes and high order modes respectively. 从计算精度、效率和成本综合考虑,建议低阶固有模态分析采用集中质量矩阵,高阶固有模态分析采用一致质量矩阵。
- Equivalent mass of rotating parts 旋转部分变位质量
- Research on the Equivalent Mass of Spring 弹簧的等效质量研究
- At 3.8 ~4.2 m,the TNT equivalent mass of 1~(#)FAE is about 2.0.At 13~ 18 m,the deflection of plate subject to 2~(#)FAE is about 1.4 times of 3~(#)FAE,the TNT equivalent masses are 3.75 and 2.96 respectively. 在炸距13~18 m之间;采用新型固液混合燃料的2%23云爆弹的靶板变形挠度约为传统环氧丙烷燃料的3%23云爆弹的1.;4倍;TNT当量分别为3
- A cloud is a mass of vapor in the sky. 云是天空中的水汽团。
- The lumped mass matrix is a diagonal matrix 集中质量阵是一个对用阵。
- Rotational velocities are combined with the element mass matrices to form a body force load vector term. Units are radians/time. 我看到帮助里有这么一句话,能自己设定角速度的单位吗?
- A dime is equivalent to ten pennies. 一角等于十分。
- By combining the interval mathematics and the finite element analysis, the mass matrix, damping matrix, stiffness matrix and the external loads are represented as interval matrices and vector. 通过结合区间数学和有限元分析,结构质量矩阵、阻尼矩阵、刚度矩阵和外载荷列向量采用区间矩阵和区间向量来描述。