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Zienkiewicz passed away...

Name            Olgierd Zienkiewicz
Nationality     British
Birth date      18 May 1921
Birth place     Caterham, UK
Date of death   2 January 2009
Place of death  Swansea, UK

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How to prevent the trash ADs at iMechanica?

Recently, more and more trash ADs appear at imechanica. The users like "ORDER CIALIS ONLINE - US DRUGSTORE FDA" have added the ADs at the comments. Is there any good method for us to prevent such behavior at imechanica? As one of the moderator, may I have the right to directly give such users name to system operator to prevent these trash ADs?

Any comments are welcome.

Ying Li

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Poisson's ratio changable of carbon nanotube sheet

Here is a recent work on the Poisson's ratio of carbon nanotube sheet [1]. From the experimental results, the researchers found that the Poisson's ratio could change from 0.06 to -0.20 as the content of MWNTs increasing from 0~100%. The interesting zero Poisson's ratio and auxetic materials were thus found.  

Ref. [1] Sign Change of Poisson's Ratio for Carbon Nanotube Sheets. Science 25 April 2008: 504-507

Ying Li

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Buckling behavior of metal film/substrate structure under pure bending

Many studies on the thin film/substrate structure and its failure mechanism were reported in recent years. The direct experimental results of thin film/substrate structure by scanning electron microscopy (SEM) presents an intriguing problem:there exists a buckling failure mechanism at the lateral edge of metal film under pure bending. The qualitative theoretical analysis has been done on such buckling failure of thin film/substrate structure.

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The free trial of Maney Publishing

Maney Publishing are pleased to announce that 30-day free trials are now available to individuals and institutions interested in our Materials Science and Engineering journals. To apply for a free trial simply follow the link and complete the online form. We will confirm your trial start date via e-mail and will be in contact with you prior to the expiration of your trial to answer any questions you may have.

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著名力学家叶开沅先生逝世

我国著名力学家、中国力学学会原常务理事、甘肃省力学学会原理事长、甘肃省政协原常委
、甘肃省科协原常委、兰州大学力学专业和学科的创始人、兰州大学力学系首任主任、名誉
主任叶开沅先生因病医治无效,于2007年10月20日15时30分在北京不幸逝世,享年82岁。
  叶开沅,男,汉族,1926年5月19日出生于浙江省衢州市。1938年至1943年,在浙江省
立衢州中学学习。1944年,到北京灯市口育英中学学习。1945年考入北京大学土木工程系,
旋即转入燕京大学数学系学习。1946年,进入唐山工程学院学习,1947年转入清华大学电机

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UC Berkeley shows the class video at youtube!

http://youtube.com/ucberkeley

As the mit show the OCW, the berkeley relases the class video at youtube, which could benefit the students all over the world. Enjoy it!  

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The US-China NSF Workshop and Summer Institute of Bio- and Nano-Mechanics and Applications (UCWSI2007)

The US-China NSF Workshop and Summer Institute of
Bio- and Nano-Mechanics and Applications (UCWSI2007)
August 31 -- September 4, 2007
Beijing, China

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爆炸力学的发展史

爆炸力学是力学的一个分支,它主要研究爆炸的发生和发展规律,以及爆炸的力学效应的利用和防护的学科。它从力学角度研究化学爆炸、核爆炸、电爆炸、粒子束爆炸(也称辐射爆炸)、高速碰撞等能量突然释放或急剧转化的过程,以及由此产生的强冲击波(又称激波)、高速流动、大变形和破坏、抛掷等效应。自然界的雷电、地震、火山爆发、陨石碰撞、星体爆发等现象也可用爆炸力学方法来研究。

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How to characterize the interface?

Recently, I am interested in the interface between two different masses. But, I don’t know how to characterize the interface between them, especially the adhesive strength and the mechanics model.

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我校校友、美国哥伦比亚大学副教授陈曦博士,获美国NSF CAREER AWARD(美国国家科学基金会(NSF)网)。

    我校力学系毕业生、哈佛大学Allen E. and Marilyn M. Puckett教授锁志刚博士和布朗大学Walter H. Annenberg University Professor教授高华建博士,曾于上世纪九十年代初分别获得过此殊荣。

    陈曦,1976年7月出生,江苏人。1994年毕业于西安交大工程力学系,1997毕业于清华大学工程力学系,2001年在哈佛大学固体力学博士学位(导师为美国科学院院士、工程院院士J.W. Hutchinson),2001-2003年在哈佛大学从事博士后研究(合作导师J.W. Hutchinson和美国科学院院士、工程院院士A.G. Evans),2003年起任教于美国哥伦比亚大学,2006年被提前两年提升为副教授,现任该校纳米力学研究中心主任。其主要学术领域为:碳纳米管、分子生物、新型能源材料和薄膜的力学行为、固体流体耦合、纳米压痕测试等,撰写发表学术期刊论文80余篇,在美国大学和国际会议作学术报告80余次。

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How to select a proper journal to submit your paper?

Recently, I have written a paper about the relationship between the dragonfly’s microstructure and the load response. It is analyzed by the experiments and FEM. But when I finished the paper, I find that it is difficult to select a proper journal to submit this paper. Although I have seen many papers about this problem, it is not proper for some of them or the others are so high such as Science. So I want to ask a question “how to select a proper journal to submit your paper?” Thank you!

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