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为促进数学、力学与地学的结合,更好地为国土整治、环境保护和灾害防治贡献力量,充分发挥中国科学院多学科综合性优势,中国科学院数理化局组织召开“环境与灾害力学研讨会”,得到了中国科学院地学方面各有关研究所的热情支持,由中国科学院力学研究所主办 相似文献
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2005年,力学所经历了几件大事:一是完成了中国科学院知识创新工程试点二期的总结和创新三期筹划,并顺利通过了现场评估,为进入2006年开始的创新三期奠定了坚实基础;二是成功举办了“庆祝力学研究所建所50周年暨钱学森回国50周年大会”;三是在国家和(部门)重点实验室的评估中,我所非线性力学国家重点实验室和高温气体动力学重点实验室被评为数理科学“良好类”实验室． 相似文献
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2002年度非线性力学国家重点实验室(LNM)第14届学术年会于2002年12月21—22日在中国科学院力学研究所隆重举行.本次年会受到了所内外学术同行的广泛关注和重视,有10余个单位的近200人参加了本次LNM学术年会. 相似文献
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力学所基础性研究新进展朱芙英中国科学院力学研究所,北京１０００８０在国家攀登计划,国家自然科学基金,中国科学院重大、重点项目等的支持下,中国科学院力学研究所在基础性研究方面取得多项重要的成果及进展．１在固体变形、损伤和破坏的非线性力学性质研究方面,形... 相似文献
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对《力学》中的物体自由度进行多方面分析,以深化教学、提高学生正
确分析物理问题的能力.使用实际教学分析的研究方法,在《力学》范围内讨论自由度与坐标、
自由与约束的关系并得以下结论:
(1) 同一物体的自由度随其所在的``空间'不同而不同, 不因坐标系的选取不同而
异, 在同类参考系中不因参考系的动静而有别;(2)自由度遵循叠加原理.
讨论了质点系的总自由度及相关计算问题,并指出研究《力学》中自由度的意义. 相似文献
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Tibor Javor 《Experimental Mechanics》1968,8(4):171-176
The present paper deals with development and design of new methods utilizing Wiedemann's effect for determination of state of strain in building structures. Wiedemann's effect and some features of torsional strain of magnetic field are the basis of new experimental method. Especially the point electromagnetic strain gages using the effect of pure torsion of electromagnetic field to enable universal examination. For strain-gage measurements, almost all physical quantities are used which can be related to the variation in length of the structures. From the electric strain measurements, the most commonly used methods are the measurements by resonance-wire strain gages or by electric-resistance strain gages. In this paper, electromagnetic strain gages are discussed using the Wiedemann effect, and the author describes some new measuring equipment and his own suggestions and methods based on an application of this effect. 相似文献
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It is well known that the problem on nonseparating potential flow of an incompressible fluid about an array of profiles reduces to an integral equation for a certain real function, determined on the contours of the profiles of the array. As such a function one can take, as was done, for instance, in [1–5], the relative velocity of the fluid on the profiles of the array. For arrays of profiles of arbitrary shape it is necessary to solve the corresponding integral equation numerically. In the particular examples of the calculation of aerodynamic arrays that are available [1–3] the numerical methods used were based on the approximate evaluation of contour integrals by rectangle formulas. As investigations showed, sizeable errors arose thereby in the approximate solution obtained, these being especially significant in the case of curved profiles of relatively small bulk. In the present paper a method for the numerical solution of the integral equation obtained in [5] is proposed. The method is based on the replacement of a profile of the array with an inscribed N polygon, the length of whose sides is of the order N–1 and whose internal angles are close to . Convergence with increasing N of the numerical solution to an exact solution of the integral equations at the reference points is demonstrated. Examples of the calculation are given.Novosibirsk. Translated from Izvestiya Akademii Nauk SSSR. Mekhanika Zhidkosti i Gaza, No. 2, pp. 105–112, March–April, 1972. 相似文献
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