| 1. | The design of huge rate artillery model and madding methods were solved 研究解决了火炮大比例缩尺模型的设计方法和制造手段。 |
| 2. | Precise position and property inspection of simulator of giant radio telescope with active spherical reflector 巨型射电望远镜缩尺模型安装定位及变形测量 |
| 3. | Minzheng zhang , xun guo , qingli meng , study on shaking table tests of building models , china - us millennium symposium on earthquake engineering , beijing , china , 2000 参与科研项目“地震模拟振动台试验缩尺模型一致相似律及其应用研究” ,获中国地震局防震减灾优秀成果三等奖, 2002 。 |
| 4. | It can be categorized into four types . based on the similar theories , the similar relationships between the models and the archetypes were deduced and a scale model was built for 在相似理论的基础上,推导了高层建筑阳台火灾实验模型与建筑原型所遵循的相似关系式,并搭建了工程实例缩尺模型实验台。 |
| 5. | Made up of two - storied lower huge platforms and three - storied upper building structures in the scale of 1 / 4 from the prototype , the model is tested under cyclic loading , and thus conducting the experimental study of the structure ' s capacity , stiffness , ductility , hysteresis capacity , yielding mechanism and failure phenomenon 通过对包括有大平台两层结构和上部三层结构的四分之一缩尺模型,在低周反复荷载作用下的试验研究,重点分析了大平台上部结构和下部结构的承载力、刚度、延性、滞回特性、屈服机制和破坏特征等。 |
| 6. | The data got from the shooting tests , conversed by the theory of similitude and eliminated the system errors , were compared with the data from the approval test in the national shooting field . it verified that the full parameters artillery physical simulation theory was right . it verified that the huge rate model design and madding methods were reliable 把模型炮实验获得的数据,按相似理论换算,并消除相似畸变带来的试验误差后,与原型炮在国家靶场定型试验的结果比较,证明了创建的火炮全参数物理模拟理论的正确性;证明所采取的大比例缩尺模型的设计方法和制造手段的可靠性;证明用缩尺的模型炮代替副炮进行多项目综合物理模拟试验技术是成功的。 |
| 7. | It is developed from large - scale objective model experiment to reduced scale model experiment ; from simple mechanics device to various advanced detecting device ; and the theory is developed from elastic mechanics , plastic mechanics to fracture mechanics and damage mechanics . the study of concrete fracture has also developed from macro - level to meso - level 从大型的实物模型试验,到各种缩尺模型试验;从简单的力学仪器,到各种先进探测仪器的使用;理论上也由弹性力学、塑性力学发展到了断裂力学、损伤力学等,对混凝土断裂问题的研究,更是由宏观领域进入了细观层次。 |
| 8. | Vibration characteristics test was carried on a model of one three - spanned prestressed concrete ( pc ) shew continuous box girders , which was designed in jing hu high speed railway of china . we discuss the difference between the results of test and 3d fem analysis with two cases of orthogonality and shew , and explore the dynamic properties of skew box girders 通过对我国京沪高速铁路设计中的一座三跨预应力混凝土斜交箱形连续梁桥缩尺模型自振特性参数的测试,比较了正交、斜交箱梁的固有频率的差异,通过与空间结构分析结果的对比,最后讨论了斜交箱梁的动力性能。 |
| 9. | Abstract : vibration characteristics test was carried on a model of one three - spanned prestressed concrete ( pc ) shew continuous box girders , which was designed in jing hu high speed railway of china . we discuss the difference between the results of test and 3d fem analysis with two cases of orthogonality and shew , and explore the dynamic properties of skew box girders 文摘:通过对我国京沪高速铁路设计中的一座三跨预应力混凝土斜交箱形连续梁桥缩尺模型自振特性参数的测试,比较了正交、斜交箱梁的固有频率的差异,通过与空间结构分析结果的对比,最后讨论了斜交箱梁的动力性能。 |