试验设计

A new cylinder type forage cutter with high operation was designed and manufactured. Construction design and its performance parameters, helical angle of moving knife, setting height of fixed knife, overload protective device, throwing device and edge shape of fixed knife were analyzed. The results of test were as follows: optimal helical angle of moving knife was 20°, optimal setting height of the center of the cylinder above fixed knife was 20 mm, line speed of blower vane was 13.6m/s ,power consump...

通过对 93ZT - 5 0 0型滚筒式铡草机的设计研究，分析了滑切角、定刀配置高度、定刀刃角对铡草机性能的影响，并对机构设计进行了探讨，试验结果为：动刀的螺旋角为 2 0°；滚筒中心高于定刀 2 0mm ；抛送风机叶片线速度 13.6m/s ；开刃定刀比矩形定刀的功率消耗低 17.5 %；安全防护装置采用牙嵌式安全离合器；研究结果对滚筒式铡草机的设计和应用具有一定的参考价值

At first part of this paper author introduces the development of grid and Globus Project. The development and architecture about CDG are introduced at the second part. At the third part, LDAP and MDS-2 of Globus Toolkit2.4 are introduced in detail. How CDG information service and scheduler are implemented is explained at the fourth part of this paper. At fifth part, some testing data chart and viewdata graphics are showed with some conclusion. The sixth part, the last part of the paper, is the review of authors work and the prospect of future work.

本文第一部分介绍了网格的发展概况以及 Globus 项目，第二部分介绍了校园数据网格的一些基本情况以及整体设计，第三部分详细介绍了 LDAP 技术、Globus Toolkit 2.4 中的 MDS-2，第四部分详细介绍了 CDG 信息服务模块与任务调度模块的设计与实现，其中包含一个适用于 CDG 的任务调度算法的设计与证明，第五部分介绍了试验环境与模块测试，包括一些测试数据与结论，第六部分是工作总结以及对今后研究的展望。

A kind of multifunctional hardware-system of monitoring device for motor vehicles road test was designed, based on vehicles-bus technology and GPRS.which adopts AU1250 embedded CPU to acquist data from the CAN/LIN bus in vehicles traffic environment ,with GPS and image monitoring as environment monitoring complements, at the same time to interact with monitoring center,function of vehicle road test data acquisition and remote monitoring and management was realized.

&一种多功能汽车行车试验监控装置硬件设计&一文介绍了一种具有远程GPRS通信模块，局部CAN、LIN 总线通信，具有位置信息采集GPS模块和图像模块的硬件架构，较好的进行了硬件设计，但文中缺乏明确的设计目标，如通讯带宽需求如何，选择的GPRS通信模块是否合乎要求，能否实现实时图像远程传输；同时文中缺乏实际验证数据，论文题目的&多功能&体现在何处。

This paper presents in more detail on the design process of the liner and piston group of Model CY6110 diesel engine,it has given certain analysis and study on the design,calculation,material,it also presents in more detail on various kinds of data of this group of frication pairs,such as structure design,material selection,pcocess machining,testing certification etc,as well as the further prospets for such research work so that the related people can take it as reference.

本文较为详尽地介绍了CY6110型柴油机的缸套、活塞组的设计过程，对发动机的缸套、活塞、活塞环这组摩擦副的设计、计算、材料、工艺、检测等方面做了一定的分析和研究；同时，也较详细地了介绍这组摩擦副在结构设计、材料选配、工艺加工、试验认证等方面的各项数据，以及此项研究工作的进一步展望，以供有关人员参考。

In this paper, the 3-D finite element relocating mesh method is used to calculate the temperature field and the thermal creep stress field of spillway dam and mid level outlet dam in certain roller compacted concrete gravity dam, sensitivity analysis have been down with different parameters, such as placing temperature, the location of cooling pipe, cooling temperature, time for water supply, ascended-layer of concrete, intermissive time and different placing time, and the commendatory construction scheme have been put forward in such analysis; according by the test result on the two scheme of concrete aggregate combination (basalt as coarse aggregate and limestone as fine aggregate, basalt as coarse aggregate and basalt as fine aggregate), simulation analysis on temperature field and thermal creep stress field of the commendatory construction scheme have been down, and analysis have also been down on temperature field and thermal stress field of the two different aggregate combination, the result indicates that the spillway dam and mid level outlet dam which adopted these two aggregate combination can both satisfy the require of design crack resistance in concrete, furthermore limestone as fine is better than basalt as fine aggregate; the effect of summer water storage and winter water storage on the temperature field and thermal stress field have been analyzed, comparing with winter water storage, in summer water storage scheme the maximum tensile stress at abnormal concrete in upstream fill is decreased by 0.1～0.3MPa and there are no evidence change of the maximum tensile stress at other parts, which indicate that summer water storage is avail for the crack resistance of upstream fill; according to the simulation calculating result and comparing temperature simulation calculating results and temperature controlling measures of some similarity projects both completed and construction, synthesis appraise have been carried to the design temperature controlling measures of dam, and the temperature controlling measures of this project have been brought forward, all these have great reference value on the design of temperature controlling measures and the optimization of the construction scheme.

本文采用三维有限元浮动网格法仿真计算程序，对某碾压混凝土重力坝的溢流坝段和中孔坝段分别进行了三维有限元温度场和温度徐变应力仿真计算分析，对浇筑温度、冷却水管的布置方式、冷却水温、通水时间、浇筑升程和间歇时间、不同开始浇筑日期等参数进行了敏感性分析，在此基础上提出了推荐的施工方案；根据两种骨料方案(玄武岩粗骨料+灰岩细骨料方案；玄武岩粗骨料+玄武岩细骨料方案)的混凝土性能试验研究成果，对推荐的施工方案进行了温度场和温度徐变应力仿真计算，并对比分析了两种不同骨料情况下的温度场和温度应力，结果表明溢流坝段及中孔坝段采用上述两种骨料均能满足混凝土的抗裂设计要求，且灰岩细骨料优于玄武岩细骨料；计算分析了夏季蓄水和冬季蓄水对坝体温度场和温度应力的影响，夏季蓄水方案与冬季蓄水方案相比，坝体上游变态混凝土区域最大拉应力小0.1～0.3MPa，其他部位最大拉应力无明显变化，夏季蓄水对坝体上游面混凝土的抗裂有利；根据仿真计算成果并通过比较国内一些已建和在建的类似工程的温度仿真计算成果及采取的温控措施，对大坝的设计温控措施进行了综合评价，并提出了该工程的温控措施，对温控设计和优化施工方案具有重要参考价值。

Generally speaking, this paper has thoroughly researched on the function and design methods of pyrotechnically actuated separation devices, and set forth the design method, computing model and reliability analysis model, which can be directly applied to the research, design and test of engineering.

综上所述，本文较全面地研究了火工分离装置的性能和设计方法，所提出了设计方法、仿真计算模型和可靠性分析模型能够直接应用到工程研制中，指导设计和试验。

The traditional design methods based on inertial brake dynamic test center can no longer adapt to high development technology, and leave too much to be desired for the requirement of modern plane designing, so a full system digital simulation design scheme on aeronautic wheel braking system is proposed in this paper.

由于航空工业的发展对防滑刹车系统的要求越来越高，原有的以惯性台刹车动力试验为基础的设计手段已与现代的高科技术不相适应，远不能满足现时飞机的设计要求，因此本文提出了航空机轮刹车系统全数字化仿真设计方案。

Research on Design Theories and Methods of Unseating Prevention Devices Based on the seismic standard of China, the design theories of unseating prevention devices were presented, according to the response spectrum of random loading and the fortify intensity at expansion joints, the design method was put forward. In the light of the use of unseating prevention devices at home and abroad, the choice and methods for installation of the devices are introduced and compared.

4连梁装置设计理论与方法研究考虑场地土的不同地震动参数和桥梁等级的不同，在论文中引入桥梁地震荷载重要系数，并根据冲击荷载的反应谱，提出连梁装置的设计地震力力和位移计算方法；参照国内外的连梁装置设计使用的现状，介绍了多种类型连梁装置的选用及安装方法；对连梁装置缓冲部分不同的构造进行了试验。

Based on a thorough analysis of the character and mechanism of city-retaining-wall structures, the design theories, construction technology, new wall types and development tendency are deeply discussed. Besides, the characteristics of various types of city retaining wall are discussed, and the usual methods for earth pressure calculation are summarized. For the anchored bar retaining wall, the anti-pulling bearing mechanism of anchored bar is first probed into, from which anti-pullforce computation method are obtained. Combined with quite a few engineering examples and spot tests, the advised design and calculation methods of anchored bar are verified. From the abundant spot measured date, an adjusted hyperbolic model is put forward to determine the anti-pullforce bearing capacity. Furthermore, a new type of H-like block retaining structure is advised with its working mechanism deeply discussed as well.

本文在综合分析目前常用城市挡土结构的特点及其受力特性等基础上，针对一般挡土墙设计理论、施工技术、新型结构以及未来的发展趋势进行了深入探讨，论述了城市挡土结构的特点，并对常用土压力理论进行了综述，介绍了城市挡土墙常见的类型，并介绍了常规的设计理论和方法；通过分析比较，优选出锚杆挡土结构和砌块式挡土结构，并从锚杆锚固原理出发，结合工程实践和大量现场试验、对锚杆的抗拔承载力进行了深入研究，提出了用调整双曲线模型法计算锚杆抗拔承载力的方法，对土压力计算方法进行了探讨，对其设计计算方法进行了研究。

Based on the relevant movement between hard shaper cutter and grinding wheel, the movements of grinding wheel are studied. The shaping grinding point and the shaping grinding edge are made up with. In order to easily compare when shaping errors and cutting edge"s angles are the most excellent, uniform expressions for convex curved rake face of hard shaping cutter and spatial cutting edge curve are separately developed. The distributions of new profiling cutter"s shaping errors and cutting edges angles are analyzed. The relevant grinding wheel and cam are designed. Due to this paper, a new profiling hard shaping cutter has been manufactured successfully. At last experiments are made to test the performance of hard shaping cutter and all kinds of precision of hard gear.

本文直接从插齿刀与砂轮之间的相对运动关系出发，单独研究砂轮的运动，提出砂轮成形磨削点和砂轮成形磨削刃的概念；分别建立圆柱砂轮和圆锥砂轮磨削后硬齿面插齿刀的波形前刀面方程及空间切削刃方程；为便于比较何种情况下插齿刀的构形误差和切削角度能同时达到最优，分别对磨削五种不同硬齿面插齿刀所用的砂轮进行了廓形设计，并分析了插齿刀的构形误差和侧切削刃切削角度的分布规律；为插齿刀波形前刀面的磨削加工设计了相应的凸轮，用所设计的凸轮和近似的砂轮成功地制造出新构形法硬齿面插齿刀；最后进行插齿加工试验，检验新构形法硬齿面插齿刀的抗崩刃能力、耐磨性及被加工硬齿面齿轮的各项精度。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。