共查询到20条相似文献,搜索用时 187 毫秒
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《力学进展》2007,(4)
才UU(牛弟J(苍弟1气沙巳弟14甘)朋、弟4 LJ巳弟1勺Z)朋(括弧外数字为期数,括弧内数字为页数) 1总论纪念全国力学规划会议和谈镐生上书三十周年专刊关于制定自然科学学科发展规划会议的几点意见..................................................……1(1)对谈镐生意见书的领导批示......··.............................................................……1(3)《一九七八、一九八五年全国基础科学发展规划(草案)理论和应用力学》的总论部分.............……1(5)中国力学学会2007年国际、国内学术活动计划.......................… 相似文献
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1会议概况 第四届国际固体断裂与强度会议(The FourthInternational Conference on Fracture& Strengthof Solids)于 2000年 8月 16日~18日在韩国蒲项科学与技术大学举行,会议主办单位是蒲项科学与技术大学机械工程系.与会代表240余人,来自10个国家,我国约有50人参加.会议交流论文220余篇.会议的目的是总结本世纪亚太地区固体力学的研究成果,展望和规划21世纪初的固体力学的学科发展方向.2学术报告评介 有6位学者应邀做大会报告,他们的报… 相似文献
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2004年,力学所以国家科技中长期规划和中国科学院中长期科技发展规划的制定为牵引,以筹划进入中科院院“三期”创新、争取承担“十一五”国家和中科院重大科研项目为动力,持续、多层面地进行了研究所发展规划的论证.在此基础上提出了发展蓝图,即6个主要的学科方向(微重力科学和空间技术、高温气体动力学与跨大气层飞行、微尺度力学与微系统、工艺力学与材料设计、海洋与环境工程、生物力学与生物工程),4个科研平台(微重力科学平台、高超声速飞行技术平台、微/跨尺度力学平台、海洋工程研究平台).包含的基本科学问题是复杂介质和极端条件下的力学行为. 相似文献
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1978年是我们国家历史发展中特别关键的一年,是拨乱返正的一年,也是振兴中华特别重要的一年.就在这一年邓小平同志提出了改革开放的伟大思想.如今30年过去了,回忆30年前的重要历史事实,对我们今后的工作有着重要的指导性意义.这里我们仅就全国力学发展规划的制定作一个回顾. 相似文献
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综合论述了1998年度力学学科面上项目(自由申请、青年基金、地区基金和高技术探索基金项目)的受理、同行评议及评审等情况,阐述了国家自然科学基金委员会重视基础研究的新精神. 相似文献
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郭永怀先生是我国著名的力学家和应用数学家.在美国留学和工作期间,他耕耘在空气动力学前沿,为跨声速流与应用数学做出贡献.在回国工作的12年间,他积极参加规划我国力学发展蓝图,培育力学人才,是我国近代力学的奠基人;他为我国原子弹、氢弹的研制贡献了全部心血乃至生命,是我国核武器事业的先驱.郭永怀先生热爱祖国、艰苦奋斗、谦虚质朴、无私奉献,他学识渊博,治学严谨,是我国科技工作者的楷模.郭永怀先生是《力学学报》第二任主编.在他的主持下,《力学学报》从创刊初期就具有很高的学术起点和公正、严谨、求实的学术声誉.这里我们向广大读者介绍郭先生的光辉一生,并刊出他的学生们的一些论文,以表达我们对这位主编的怀念和崇敬. 相似文献
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《International Journal of Solids and Structures》1999,36(10):1503-1521
The analysis of rapidly-moving thermomechanical surface sources is extended to the study of buried thermomechanical sources that move parallel to the interface of two welded dissimilar thermoelastic half-spaces at a constant subcritical speed. The sources are manifest as body force line loads in the coupled equations of thermoelasticity, and a 2-D steady-state situation is treated. Exact integral transform solutions are obtained, and expressions for the displacements and temperature changes are generated by analytical inversion of robust asymptotic versions of the transforms.These expressions show that thermoelastic coupling effects increase with source speed, and that the thermal source is always manifest in combination with a component of the mechanical source, i.e. an effective thermal source term exists. The expressions also exhibit component functions that are in effect hybrids of functions that are seen in purely thermal and isothermal elastic solutions.The critical source speed is defined as the minimum of the two asymptotic thermoelastic Rayleigh speeds in the half-spaces and, when it exists, the asymptotic thermoelastic Stoneley speed. Exact expressions for these speeds are given, and used to present some typical values. 相似文献
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IntroductionConsiderthesystemofpartialdifferentialalgebraicequations (PDAEs) :Σ : Pi(y1,y2 ,… ,yn) =0 (i =1,2 ,… ,r) ,wherethecoefficientsareinthedifferentialfieldKwithcharacteristiczero .TheimportantquestionishowtosolvethisPDAEsinthetheoryofpartialdifferentialequa… 相似文献
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An Introduction to the Adjoint Approach to Design 总被引:1,自引:0,他引:1
Optimal design methods involving the solution of an adjoint system of equations are an active area of research in computational
fluid dynamics, particularly for aeronautical applications. This paper presents an introduction to the subject, emphasising
the simplicity of the ideas when viewed in the context of linear algebra. Detailed discussions also include the extension
to p.d.e.'s, the construction of the adjoint p.d.e. and its boundary conditions, and the physical significance of the adjoint
solution. The paper concludes with examples of the use of adjoint methods for optimising the design of business jets.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
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P. F. Sabodash R. A. Cherednichenko 《Journal of Applied Mechanics and Technical Physics》1971,12(4):571-577
We present a difference scheme, based on the method of spatial characteristics, for solving axially symmetric dynamical problems of the theory of elasticity. Consideration is given to the possibility of solving a Cauchy problem and a problem for a solid or a hollow cylinder which takes boundary conditions into account. It is suggested that linear problems may be solved by this method. An example is given in which the parameters characterizing the stress-deformation state of a semiinfinite cylinder are calculated, the points of the end of the cylinder being given an initial axial velocity. The calculation of these parameters was carried out on the BÉSM-6 computer.Translated from Zhurnal Prikladnoi Mekhaniki i Tekhnicheskoi Fiziki, No. 4, pp. 101–109, July–August, 1971. 相似文献
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学习和掌握张量基本知识是研究连续介质力学的基础,然而,当前对张量的讲述和介绍方式比较复杂,造成理解和运用的困难.本文利用笛卡尔坐标系引入张量概念及其基本运算,阐明张量本质上是坐标变换,熟悉求和约定和指标表示是其关键,从而使张量能体现出数学本身的简单、和谐和美的统一,也能使读者比较顺利地学习、理解并运用张量. 相似文献
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Yu. M. Zabolotnov 《Mechanics of Solids》2016,51(4):371-384
We analyze the spatial motion of a rigid body fixed to a cable about its center of mass when the orbital cable system is unrolling. The analysis is based on the integral manifold method, which permits separating the rigid body motion into the slow and fast components. The motion of the rigid body is studied in the case of slow variations in the cable tension force and under the action of various disturbances.We estimate the influence of the static and dynamic asymmetry of the rigid body on its spatial motion about the cable fixation point. An example of the analysis of the rigid body motion when the orbital cable system is unrolling is given for a special program of variations in the cable tension force. The conditions of applicability of the integral manifold method are analyzed. 相似文献