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Apply the metalloscope, the scanning electric mirrorand energy spectrum analysis instrument etc. material analysis way and MLD-10 dynamic load abrasion tester, JB-36 three use the impact tester etc. test equipment to analysis and test the wearable performance of selected material and welding quality of welding sample. So as to make certain the best welding material and welding crafts between the welding of pickax boot wearable material and pickax body material in making tamping pick adopting parted type structure.

应用金相显微镜、扫描电镜、能谱仪等材料分析手段以及MLD-10动载磨料磨损试验机、JB-36型三用冲击试验机等试验设备,对所选材料的耐磨性能和焊接试件的焊接质量进行分析测试,以确定分体式结构制造捣镐的工艺中最佳镐靴耐磨材料及其与镐体材料捍接过程中的最佳焊接材料和焊接工艺。

This article expatiates and argumentations contents as follow: background and meaningof study the task, basis concept of system simulation, technology of seeable, the theory of inner trajectory and test data analysis, inner trajectory numerical value simulation and test result analysis, computer simulation analysis system of shell in internal ballistic test, technology exploitation scheme of 3D simulation software and so on.

本文对研究课题的背景及意义、系统模拟仿真的基本概念、可视化、内弹道模型与试验数据分析理论、内弹道数值模拟与试验结果分析、炮弹内弹道试验计算机仿真系统、三维仿真软件开发技术方案等内容进行了阐述和论证。

In order to investigate buckling mode, buckling load and failure mode of structure, shear experiments were conducted for stiffened thin-walled composite plate. Finite element method was also used to analyze the buckling behavior of that composite structure. Analysis results reveal buckling mode and buckling loading of finite element analysis are accordable with experimental results.

通过对复合材料薄壁加筋板结构进行剪切载荷下的屈曲试验研究,得到结构的屈曲模态、屈曲失稳载荷以及破坏形式,并通过有限元方法对结构的屈曲进行数值分析,分析得到的复合材料薄壁加筋板结构的屈曲模态和试验结果一致,屈曲载荷与试验结果吻合较好。

The main contents are as follows. By the experiments of two joints under low-reversed cyclic loading, the paper analyzes the failure pattern, energy dissipation, ductility and cracking in the joint cores, evaluates the seismic performances and anti-crack behaviors of the joints, and deduces the anti-crack formula of the subassemblage and prestressed frame joint. Through the finite element analysis software Ansys , the paper analyzes the specimens nonlinearly, and the theoretical analysis results are well consistent with those of the experiment.

主要内容包括:通过两榀节点在低周反复荷载作用下的试验,分析其破坏形态、耗能能力、延性性能和节点核芯区裂缝开展情况,评估节点的抗震性能和抗裂能力,推导出预压装配式框架节点的抗裂验算公式;并运用Ansys对试验中的节点进行了非线性分析,计算结果与试验结果基本吻合。

Based on the results from a series of simple shear tests for simulation a reinforced cut -- off slope with steelbars, this paper proposes a calculation method to evaluate the shear resistance and effect of the reinforcing materialsinvoking the theory of the lateral resistance of foundation pile.

本文在综合分析插筋补强土体剪切试验基础上,参考横向受力桩所受剪切力的计算方法,提出了用于评价插筋横向抗剪作用及其产生的补强效果的理论计算方法;并据此计算方法对试验条件下插筋在变形不连续面位置的剪力及由此剪力产生的抗剪补强效果进行了计算;然后将计算结果与试验的实测结果进行了分析对比,结果表明理论计算方法在一定的土体变形范围具有良好的精度和适用性。

A number of calculation examples, including past experiments, our experiments, thick slabs experiments, thin slab experiments, single slab experiments and doweled slabs experiments, are given. By comparing test values with calculating values, some significative conclusions are drawn. The superiority of generalized conforming element for thick-thin slab on foundation is pointed out. The average ranges of foundation parameters are given according to these experiments.

6利用有限元程序进行正分析,用遗传算法进行反分析,识别地基的基本参数,实现地基参数的原位测试;给出大量算例,包括前人的试验和本文的试验、薄板与厚板、单板与接缝板,通过计算值与实测值的比较,得出一些较有意义的结论;阐明了双参数地基上广义协调厚薄板通用元的优越性并给出了试验场地地基参数的平均取值范围。

The preparative technique of solid lubricant is cold-press sintering method.The micro-structure , friction surface, lubricant transfer film surface of base material was characterized by SEM; XRD was used to do phase analysis. The degrees of crystallinity of pure PTFE under the different conditions of water cooling, air cooling and furnace-varying cooling were made comparison by XRD. The thermal stability of pure PTFE and solid lubricant was analyzed by DSC-TG; The composition and valence state of elements in the surface of carbon fiber ,solid lubricant before and after friction test and lubricant transfer film were characterized by XPS; The frictional property of solid lubricant was tested by pin and disk test rig .

用SEM表征原料微观结构、摩擦表面及润滑转移膜表面形貌:用XRD进行原料物相分析,及比较水冷却、空气冷却、随炉冷却三种工艺条件下的纯聚四氟乙烯树脂的结晶度;用DSC-TG分析纯聚四氟乙烯树脂及固体润滑剂的热稳定性;用XPS表征碳纤维表面、固体润滑剂摩擦前后表面、润滑转移膜表面的元素组成、价态变化;用销盘式摩擦磨损试验机对固体润滑剂进行摩擦性能测试;采用专用的台架模拟试验机对固体润滑剂镶嵌轴承套与钢轴摩擦副间的摩擦磨损性能进行测定;用莱次偏光显微镜测试固体润滑剂的硬度;用材料试验机测试固体润滑剂的抗压强度等。

Have a 15-ton electric arc furnace, 15-ton AOD furnace, 3-ton electric-hydraulic hammer, air hammer, common lathe, CNC lathe, large-diameter end face lathe, vertical lathe, drilling and other production equipment more than 100 Units; the existing chemical composition analysis equipment, Portable Direct Reading Spectrometer alloy composition analyzer, SPECTRO desktop direct reading spectrometer, complete sets of metallographic analysis, ultrasonic flaw detector, magnetic particle flaw detector, universal tensile testing machine, impact tester, hardness testing, ultrasonic thickness testing equipment, etc., production fully equipped, perfect testing means, at home with the industry's leading annual production of alloy steel, stainless steel bar and forging material 30,000 tons, 5,000 tons of finished flanges.

拥有15吨电弧炉、15吨AOD炉、3吨电液锤、空气锤、普通车床、数控车床、大口径端面车床、立车、钻床等生产设备100多台;现有化学成份分析设备、便携式直读光谱合金成份分析仪、SPECTRO台式直读光谱仪、成套金相分析、超声波探伤仪、磁粉探伤仪、万能拉力试验机、冲击试验机、硬度试验、超声波测厚仪等检测设备,生产设备齐全,测试手段完善,在国内同行业领先,年生产合金钢、不锈钢棒材及锻材30000吨、成品法兰5000吨。

The along-wind vibration and across-wind vibration , icing situations of Guyed Mast are also studied, furthermore, the parametric vibration, the phenomenon of jump and chaos of the Guyed Mast are investigated; also, the wind tunnel experiment of Guyed Mast first made in China is finished and the test result, along with measurement of the real structure, are examined, which provide the reasonable theory and reliable experimental data for the revision of the high-rise structure code.

本文系统地研究了桅杆的顺风、横风以及在裹冰下的风效应,并进一步分析了桅杆的参激振动、跳跃及混沌现象等,完成了国内首次桅杆结构的风洞试验,分析了桅杆实测和试验结果,为今后高耸结构规范的修订提供了的合理的理论依据和可靠试验数据。

By statistical analysis to a large number of data collected from the reliability test of 120km/h raising speed wagon,this paper,based on the theory of reliability engineering,elaborated the reliability of the tested wagon in the field of running safety,maintenance support,failure mode effect and criticality.

通过对120km/h提速货车可靠性试验中收集的大量故障数据进行统计分析,根据18万km的阶段试验数据分析与推断,利用可靠性工程的理论,对货车提速到120km/h运行的可靠性,做出初步的结论性判断,并提出了今后在铁路车辆设计、制造、试验及维护保障管理等各方面,全面引入产品可靠性质量管理理念,进行相应的可靠性深入研究。

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