模拟试验

In this paper, one of the particle discrete element method named particle flow code in 2-dimensionPFC~(2D is used. Based on the results of lab tests, sand behavior under monotonic and cyclic loading is simulated from the aspect of association of macro and micro scope.

本文利用颗粒离散元法中的二维颗粒流方法，以试验研究结果为基础，从宏细观结合的角度对单调与循环加荷条件下砂土的力学性质进行了细观模拟。

The paper systemetically investigates the hydrolic properties of the level swirling inner dissipator and the factors which influence on it by model test on the one hand, on the numerical simulation hand, the paper has simulated the swirling flow field in the level discharge tunnel with Anisotropic k-ε Turbulence Model by programming, in addition with Second-moment Renolds Stress Model by utilizing CFX software.

本文一方面通过模型试验的方法系统地研究了水平旋流内消能工流场的水力特性和影响因素；另一方面选取各向异性的K-ε模型和雷诺应力模型，分别用编程的方式和利用CFX软件数值模拟水平旋流泄洪洞内流场。

A rational method of disposal for a the dowel bar is proposed through test-in-place and finite element analysis.

提出了传力杆的合理布置方式，并通过现场试验和数值模拟进行了分析和验证。

A different orientation would mean a change of earth gravity acting on flow boiling heat transfer. Based on analysis of the influence of buoyancy on flow boiling heat transfer at different orientation angle, the vertical upflow and downflow are used as ways of the arrangement of heating surface for the modeling test on earth's surface of the ...

在浮力对不同方向角下流动沸腾换热影响分析的基础上，提出了采用立式上升流和下降流来作为地面模拟微重力下流动沸腾试验的加热面布置形式，通过对这两种工况的比较研究可以典型地说明重力场对流动沸腾换热的影响。

Based on the spot measure and coal sample fracture experiment, the distribution of the top-coal block is found. Coal block distribution is the foundation of simulation test for coal block drawing.

通过块体顶煤的相似模拟放煤试验得出了顶煤块径大小、分布层位对顶煤回收率的影响规律，并得出了放煤工艺对顶煤分布特征的适应性规律。

In order to avoid repeating job in the most extent and improve efficiency of design, using the idea of structure parametric design. Based on APDL, the FEA drill chuck model can be easily created by adjust several geometric parametric and the process of FEA is automatically executed.This paper discusses the affections of different parameters for the stress capability of drill chuck. The high efficiency drill chuck strength analysis system can help designer develop new products.

为避免重复工作和提高分析效率，本文结合ANSYS提供的二次开发参数化设计语言APDL，实现了对有限元分析软件ANSYS命令流的调用，解决了通用程序与专业需求之间的矛盾，完成了钻夹头有限元参数化程序分析，对钻夹头的强度性能进行了分析和仿真；模拟钻夹头实际生成过程中的性能测试试验，探讨加工误差引起的不同装配角度等参数对钻夹头强度性能的影响。

Considering the limitation of the shock experiment of a drop hammer, a shock simulation experiment platform is used to test the shock characteristics of isolators.

针对落锤冲击试验的不足，提出了减振器冲击特性的模拟台测试方法。

Tests with different layout parameters show that numerical modeling can help optimize the design of layout and re duce risks of crosswell seismic.

不同观测系统设计参数的成像试验表明，数值模拟可以帮助优化野外观测系统的设计，降低井间地震的技术风险。

This paper presents a study on the pricinple of the effective fuel consumptionunloaded dynamometry,the relationship between effective fuel consumption andpower of desel doesn t change with its technical condition,Pricision and suitability of EFCUD were verifyed on hydraulic dynamometer and movable hydraulic torquemeter.

研究了有效油耗无负荷测功技术的基本原理──柴油发动机的功率和有效油耗之间存在着不以其技术状态而变化的规律性；通过模拟故障的方法检验了该法的适应性，并通过工厂台架试验和田间测试2种方法检验了该法的精度。

When the model is established, this thesis calculates the key tache that is traction dynamotors voltage with the method of simulating the adjust characteristic of dynamotor and works out the whole mathematical model.

本文还通过比较数学模型对机车传动系统模拟的记录和东风7型机车水阻试验记录，验证了数学模型的正确性和精确程度。

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。