查询词典 numerical analysis

Considering the difference of earthquake intensities in both sides of the fault zone, artificial earthquake waves were simulated by trigonometric series method with different seismic peak accelerations. Then the seismic failure numerical analysis was carried out, the weak areas of seismic failure and their reasons were discussed particularly.

考虑到断裂带两侧地震强度的区别，采用三角级数法模拟人工地震波时选用不同的地震峰值加速度，然后对其进行地震破坏数值分析，重点讨论了桥梁地震破坏的薄弱部位及其破坏原因。

Based on the test results and numerical analysis, rigidity degradation rules and hysteretic rules are analyzed. A trilinear hysteretic model considering rigidity degradation is proposed for steel reinforced high strength and high performance concrete frame joints. The proposed restoring force model tallies with the test curves, which can be a good reference for seismic design of SRC structures.

3根据试验所得的滞回曲线和骨架曲线，分析节点的滞回规律及恢复力特性，提出了适合于型钢高强高性能混凝土框架节点的恢复力模型，为节点抗震性能研究和非线性地震反应时程分析提供科学的理论基础。

By the help of numerical analysis and graphic recognition, Duffing-van der Pol non-linear vibration system with 9 parameters has been researched, the Graphic User Interface contains initial conditions, 9 parameters, power spectrums, trochoid chart of phase portraits, Poincaré mapping, analogous dynamic graph of displacements and the analogous vibration graph of mass blocks, the various dynamic characteristics of the non-linear vibration can be attained, which makes it possible to fully implement the visualized computer experiments and study of Duffing-van der Pol non-linear vibration system.

因为混沌运动十分复杂，在研究和模拟混沌运动的过程中，不但要进行大量的数值计算，而且要将计算结果直观地展示出来以便观察混沌现象，完成这一任务非计算机不可。自从洛伦茨利用计算机发现了第一个混沌吸引子以后，30多年来正是有赖于计算机技术的发展，促使混沌的研究取得迅速的发展。另一方面，混沌运动是确定性系统中出现的一种貌似随机的现象，走向混沌有其独特的过程，只有展示出它的演化过程，才能很好地了解混沌运动。也就是说，混沌是一门关于过程、演化的科学而不是一门关于状态、存在的科学。因此，只有利用计算机才能将混沌的动态过程和演化的方式真正地体现出来。

As a rapid calculation of radioactive shield attenuation in truncated cone, the cross points penetrated through the truncated right angle cone shielded region from source points to the detector point have been studied via numerical analysis.

提出一种数值解析法计算从放射线源到评价点的放射线所穿透圆锥台形屏蔽物体的交点坐标，从而可快速预测辐射屏蔽衰减率。

Truncation errors and their related problem are an everyday concern for people working in the area of numerical analysis.

截断误差和与它们有关的问题，对在数字分析领域工作中的人来说是经常关注的。

Numerical analysis and research of strength in connecting thread when unguided rocket launching［J］.

火箭弹发射时连接螺纹处强度的数值分析和研究［J］。

It was concluded that there are direct relationships between amplitude and initial phase in vertical orientation by numerical analysis. There are maximum and minimum of amplitude, and the way to ensure them was proposed.

经过数值分析，得出在竖直方向上激振力的幅值与初相角有直接的关系，并且幅值存在最大值和最小值，提出了最大值和最小值的确定方法。

In order to use the analytical results of three dimensional crack problem of infinite bodies and avoid the volume integral in numerical analysis.

为了充分利用三维裂纹问题的解析结果。以及避免数值分析中出现体积分。

The numerical analysis to different operating modes shows the developing laws of secondary flow inside volute and impeller.

通过对不同工况的计算，揭示了叶轮和蜗壳内部的二次流现象及其发展规律。

The numerical analysis shows that the effect of an input sinusoidal signal is also a sinusoidal signal in the output, and the effect of the white noise is a Wiener process. When the system parameters are small enough, the effect of signal modulating noise can occur in the stochastic systems.

理论分析表明，正弦信号在系统输出中的数值表现仍为正弦信号，白噪声的效应是维纳过程，较小的系统参数才能使随机共振系统发生信号调制噪声效应。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。