应用力学

The article exoatiats on the reasons of hole deviation; analyses a great many of recent field application of deviation control , gains a nice bit of field experience and theory on deviation control .

本文阐述了井斜产生的原因；归纳分析了今年来国内井斜控制技术在现场应用情况；结合静力学防斜理论和动力学防斜理论，总结了大量井斜控制技术现场应用的工程经验和理论，对防斜钻井技术研究及防斜钻井实践有重要参考、指导意义。

By using the transfer matrix method of multibody system, the hard problem of computation of the vibration characteristics of LRMLRS coupled with rigid bodies and elastic bodies is solved which is very difficult to the ordinary dynamic methods, and the vibration characteristics of LRMLRS which is varied when the number of rockets in the launch device is varied, is obtained conveniently. By developing augmented eigenvectors of the LRMLRS and its orthogonality conditions, the nonorthogonality problem of the multibody system including rigid bodies and elastic bodies is solved and the exact analysis of the dynamics response of the LRMLRS including rigid bodies and elastic bodies is realized. By using the random integer programming method, the hard optimization problem which contains continuous variables, discrete variables and random variables at the same time is solved. This method provides a technology for optimum design with random variables and discrete variables. The dynamic optimum design is realized to decrease the number of rockets consumption in the LRMLRS test. The simulation system of dispersion of fire is established by using the maximum entropy method to estimate dispersion of fire.

通过应用多体系统传递矩阵法，解决了刚弹耦合远程多管火箭多体系统振动特性这一通常力学方法不便于解决的计算难题，方便地获得了远程多管火箭振动特性及其随发射架上火箭弹个数变化而变化的情况；通过构造增广特征矢量及其正交性条件，解决了刚弹耦合多体系统特征矢量不具有通常意义下的正交性的难题，实现了对刚弹耦合远程多管火箭动力响应的精确分析；应用随机整数规划法，解决了同时考虑连续、离散和随机变量等多种设计变量的优化设计难题，为含随机和离散变量的优化设计提供了手段，实现了减少远程多管火箭试验用弹量的动态优化设计；建立了应用最大熵法估计的密集度仿真系统，优化射序和射击间隔，实现了提高远程多管火箭射击密集度的动态优化。

Based on this,it takes the actual bridge test of stress powdered coal ash high-functioned concrete pile,and offers foundations for the application of stress powdered coal ash high-functioned concrete on railway bridge and choice of designing p.

研究了粉煤灰高性能混凝土梁在重复荷载作用下的力学性能，并探讨了粉煤灰掺量(0%~40%)、混凝土标号(C50~C80)及养护条件等因素对预应力粉煤灰高性能混凝土梁力学性能的影响，在此基础上进行了预应力粉煤灰高性能混凝土梁的实桥测试，为粉煤灰高性能混凝土在铁路桥梁上的应用及设计参数的选取提供了依据。

This article focuses on research of prediction of rock-burst happened in Cangling extreme long-tunnel engineering, comparison of tunnel carving details in the performing stage and prevention measures.

通过对苍岭特长隧道岩爆问题的预测研究和施工阶段洞身开挖情况对比，以及针对本工程的岩爆防治措施研究，探讨了岩爆预测判据对苍岭隧道工程的适用性，揭示了苍岭隧道围岩的岩性特征和初始应力场，掌握了苍岭隧道岩爆发生的烈度和基本分布规律，提出了对岩爆问题的工程防治措施，另外，根据工程区地质条件和岩石物理力学性能参数，建立了相应的地质力学模型，采用有限元法建模反演分析，其结果与通过钻孔水压致裂试验测得的地应力结果比较，显得较为吻合，并得到施工阶段通过洞壁应力恢复法分析结果的验证，验证表明理论模型和有限元模型的适用性及分析应力场是较为准确和合理的，并在此基础上对苍岭隧道岩爆进行分段预测和采取了较有成效的工程防治措施，具有较高的工程应用价值。

The main courses are political theory and foreign language, engineering mathematics, elasto-plastic mechanics, computer applications, fluid mechanics, seepage mechanics, numerical simulation of petroleum deposits, petroleum chemistry, recovery ratio theory, petroleum and natural gas exploration techniques, petroleum and natural gas well engineering, shaft engineering, natural gas engineering, petroleum deposit engineering, pipe engineering for petroleum transport, pipe engineering for gas transport, petroleum and gas transport, simulation of petroleum and gas pipes, natural gas liquefaction technique, management theory and energy economics.

研修的主要课程有：政治理论课、外语课、工程数学、弹塑性力学、计算机应用技术、高等流体力学、高等渗流力学、油藏数值模拟、油田化学、采收率原理、现代油气勘探技术、现代油气井工程、现代凿井工程、天然气工程、高等油藏工程、高等采油工程、高等输油管道工程、高等输气管工程、油气田采输系统、油气管道运行模拟、天然气液化技术、高等管理学基础、能源经济等。

The stress and strain of jaw crusher teeth plate have been simulated and studied with finite element analysis by means of determinate mechanics.

应用确定性力学方法，对齿板应力和应变进行了有限元仿真研究，通过对仿真结果的分析，认为基于确定性力学的齿板应力和应变仿真只能部分反映其真实受力状态，齿板类零件在有限元仿真中的载荷施加方法应进一步研究，以真实地反映齿板在实际工况下的受力情况。

Research on coal caving characteristics and caving technology for fully mechanized top coal caving mining face in thick seam with complicated parting structure;2. On the basis of mechanical property test of rock, the characteristic of combination system for coal and rock parting were thoroughly studied.

在煤岩力学性能试验的基础上，对煤矸组合系统的力学特性进行了较为深入的分析，揭示了含夹矸顶煤的破碎机理，建立了确定含夹矸层厚度上限值的方法，由此提出了提高含夹矸顶煤冒放性的主要技术措施，并在现场应用中取得了满意的效果。

In the view of Photo-Optic Mechanics,Elastic Mechanics,and FEM method,the deformation of inner disfigurements in structures was studied with ESPI and Phase-Shift in this dissertation and some valuable results and conclusions were obtained.

本文从现代光测力学、弹性力学以及有限元数值计算的角度，应用电子散斑干涉法和相移技术对缺陷进行了研究和分析，得到了一些有价值的研究结果。

For the purpose to study its critical issues for fusion application, many kinds of V-W-Cr-Ti-Al alloys were developed, and were used for studies of recovery and recrystallization, aging behavior and precipitation hardening, high-temperature mechanical performance, effects of H on mechanical properties and hydrogen enbrittlement, H release behavior and oxidation behavior at elevated temperature. Mechanizms for the behaviors were analyzed and the relationship between chemical composition, microstructure and properties was established.

为研究其聚变应用关键问题，本项目研制了多种V-W-Cr-Ti-Al合金，利用它们完成了合金的回复和再结晶、时效行为和析出强化、高温力学性能、氢对合金力学性能的影响及氢脆、氢释放行为、高温氧化行为等研究，分析了合金的行为机理，建立起了合金性能与化学成份、微观组织结构的关系，是以后研制更高性能合金的基础。

Mechanical models and differential equations of motion for high speed pantographs;2. By the principle, differential equations of motion for variable-mass nonholonomic systems constrained to the fixed axis rotation are obtained.

建立了变质量力学系统在定轴转动参考系中的Jourdain原理，由此得到了受定轴转动约束的变质量力学系统运动微分方程，给出了准坐标形式，最后举例说明方程的应用。

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。