对一个非惯性系力学问题的探讨

众所周知，牛顿运动定律仅适用于惯性系，它在非惯性系中不适用．在非惯性系中，可引入与加速运动参考系相联系的力，从形式上满足牛顿第二定律公式，这样引入的力叫惯性力．“欲全面分析被研究物体所受的力，必须同时分析参照物所受的力，     

第八届《力学与实践》编委会

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物理学咬文嚼字之四十九

维里定理中的virial是个力学量，不是人名．它源于vis viva中的vis．Virial出现在众多物理概念中，virial theorem的一个重要应用结果是暗物质概念的提出．到了给virial找个合适的中文翻译的时候了．     

《应用数学和力学》来稿简则

1.我刊主要刊登有关力学、力学中的数学方法和与近代力学密切相关的应用数学的创造性学术论文。我刊以中、英文两种版本公开发行,惠稿请提供内容相同的中、英文稿电子文档。稿件力求简短,一般在3000～5000字左右,以不超过8000字为宜。2.我刊实行编委推荐制,投稿须经编委负责推荐,由主编最终审定安排发表。编委推荐稿件应有编委署名或盖章的推荐信方为有效。     

关于21世纪力学实验教学模式探讨

通过对实验科学发展的简要回顾和我国目前实验教学现状的讨论，提出了新的实验教学模式，使实验教学走向社会化，来提高学生知识的“获得能”和应用知识的“操作能”。     

Forewords

The Journal,固程力学学报with its Latin name Acta Mechanica Solida Sinica,was founded in 1980.It has been devoted to the publications of research papers in all fields of the solid-state mechanics and its related disciplines in science,     

Surrogate-based modeling and dimension reduction techniques for multi-scale mechanics problems

Successful modeling and/or design of engineering systems often requires one to address the impact of multiple "design variables" on the prescribed outcome.There are often multiple,competing objectives based on which we assess the outcome of optimization.Since accurate,high fidelity models are typically time consuming and computationally expensive,comprehensive evaluations can be conducted only if an efficient framework is available.Furthermore,informed decisions of the model/hardware’s overall performance rely on an adequate understanding of the global,not local,sensitivity of the individual design variables on the objectives.The surrogate-based approach,which involves approximating the objectives as continuous functions of design variables from limited data,offers a rational framework to reduce the number of important input variables,i.e.,the dimension of a design or modeling space.In this paper,we review the fundamental issues that arise in surrogate-based analysis and optimization,highlighting concepts,methods,techniques,as well as modeling implications for mechanics problems.To aid the discussions of the issues involved,we summarize recent efforts in investigating cryogenic cavitating flows,active flow control based on dielectric barrier discharge concepts,and lithium(Li)-ion batteries.It is also stressed that many multi-scale mechanics problems can naturally benefit from the surrogate approach for "scale bridging."     

Foreword

<正>This Special Issue of Acta Mechanica Sinica(AMS) publishes a few papers selected and recom-mended by The Scientific Committee, The 10th Interna-tional Conference on Dynamical Systems-Theory and