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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

 Jiang Ke. A new method for solving solid structures. COMPUTATIONAL MECHANICS: Proceedings of International Symposium on Computational Mechanics (ISCM 2007), July 30-August 1, 2007, Beijing,China. Tsinghua University Press & Springer.

Each year, several new students begin their studies of Solid Mechanics for PhD degrees at Harvard School of Engineering and Applied Sciences.  The students come from all over the world.  We have no constraint on where they come from.

hi all!

i am a new user of abaqus. i am trying a simple problem of a plate. the plate is made of composite material (orthotropic). i give all the properties correctly. but after submitting the job i get an error that 'laminate type- can be used with plane stress elemnts only'. how could i rectify this? can anyone tell me how to model a plane stress problem in abaqus? what is the significance of plane stress/strain thickness ratio. 

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Here are the chapter names:

1) Prototypes of the theory of elasticity and viscoelasticity

2) Tensor analysis

3) Stress tensor

4) Analysis of strain

5) Conservation Laws

6) Elastic and plastic behavior of materials

7) Linear elasticity

8) Solutions of problems in elasticity by potentials

9) Two-dimensional problems in elasticity

10) Variational Calculus, energy theorems, saint-venant's principle

11) Hamilton's principle, wave propagation, applications of generalized coordinates