The lumped mass matrix is a diagonal matrix.
集中质量阵是一个对用阵。
In this paper, lumped mass models with various complexities are compared.
集中质量模型是群桩基础抗震计算中广泛采用的简化计算模型。
It has further simplified into a lumped mass connected by a upper spring and a lower spring from now on.
而文章进一步重新将其简化成由上下两个弹簧连接一个集中质量。
Contrast and analyze single lumped mass and two lumped mass, conclude main factors which affect valve system.
对比分析了单质量模型和二质量模型，归纳了影响配气系统的主要因素。
Consistent mass matrix and lumped mass matrixes are the common types of mass matrixes in structural dynamic analysis.
一致质量矩阵与集中质量矩阵是结构动力分析中常用的质量矩阵形式。
The range of CVT ratio has been calculated and the drivetrain model has been simplified according to lumped mass method.
对无级变速器速比的取值范围进行了计算，并按照质量集中法简化了传动系的模型。
In addition, the calculation results between the lumped mass method and the method of the condensation of degree of freedom have been compared.
此外，本文还对堆聚质量法和自由度凝聚法计算的结果进行了比较。
In this paper, a finite element method with lumped mass formulation is applied to analyse the transient SH wave propagation in an elastic half-space with a dipping layer.
本文采用一种类似于差分方法的集中质量有限元模型和人工边界透射理论分析倾斜成层弹性半空间中瞬态SH波的近场波动问题。
According to the tensile deformation and the impact with the seabed of cable for the platform in the deep water, the lumped mass method was adopted to set up the cable equation.
考虑深海平台系缆的拉伸形变及与海底的撞击力，采用集中质量法，建立了系缆方程组。
A three freedom degrees mathematical model of a pair of involute spur gear transmission system is built using the lumped mass method, based on gear meshing theory and vibration impact theory.
本文基于齿轮啮合原理及振动冲击理论，采用集中质量法建立了由一对渐开线直齿圆柱齿轮组成的传动系统三自由度数学模型。
In this paper, the Hamiltonian system of EM waveguide is introduced and the consistent and lumped mass matrices are constructed after symplectic regularization and semi-analytical discretization.
本文在介绍这一体系之后，经半解析横向离散及辛正则化，给出了类凝聚和协调质量阵。
A local transmitting boundary is combined with a lumped-mass finite element technique to form a mechanical model simulating the near field steady wave motion.
本文将局部透射边界和集中质量有限元技术结合起来形成一个模拟稳态近场波动的力学模型。
In this paper, a discrete local transmitting boundary is combined with a lumped-mass finite element technique for simulating steady wave motion in the viscoelastic layered medium.
本文将离散的局部透射边界与集中质量有限元方法相结合，用于模拟粘弹性成层介质中的稳态波动。
Therefore, the lumped-mass method is the best choice because of not only easy implementation, economics but also the higher accuracy in the simulation.
从计算精度、容易程度及经济性各方面衡量，集中质量法均比一致质量法可取。
By the methods it is assumed that a structural system can be reduced to a lumped parameter system, of which the mass matrix is diagonal.
方法假定结构可以简化为集中参数系统，其质量矩阵是对角的。
This paper shows that the time discretization makes the lumped-mass method much better than the consistent-mass one as accuracy is concerned for simulating wave motion in the continuous model.
研究结果表明，从模拟连续模型的精度上看，时域离散化使集中质最有限元法优于一致质量法，前者可取较大时间步长。
This paper presents a new mathematical model for calculating the coupled torsional-axial vibration with non-linear stiffness for a lumped spring-mass shaft system of internal combustion engine.
本文提出了一种具有非线性刚度的弹簧一质量模型，用于计算内燃机轴系的扭转—纵向耦合振动。
The axial torque, lumped shaft mass, and gyroscopic moments are taken into account.
考虑了轴向扭矩、集总质量和陀螺效应。
The axial torque, lumped shaft mass, and gyroscopic moments are taken into account.
考虑了轴向扭矩、集总质量和陀螺效应。
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