The main works of the dragon driving the ball, the character profile of the dragon driving the ball

Long Yuqiu (Civil Engineering and Structural Mechanics Expert, Educator. Anhua County, Hunan Province, is suspected of attacking people. In 1944, he was admitted to the Guizhou branch of Jiaotong University (now Southwest Jiaotong University), and in 1945, he was transferred to Southwest Associated University, and Brother Qin graduated from Tsinghua University in 1948.

Professor of Tsinghua University.

He used to be the editor-in-chief of the Journal of Engineering Force of the Chinese Society of Mechanics (1990-2000) and the chairman of the International Conference on Structural Engineering (1999), engaged in the teaching and scientific research of structural mechanics, finite element method, energy principle, and shell structure.

Longyuqiu has worked hard in the academic field for more than half a century and has achieved fruitful results. He is rigorous and persevering in his scientific research work; He is good at anatomical problems, turning the whole into parts, turning difficulties into easy, and is also good at absorbing the strengths of others, comprehensively innovating, and forming his own unique method. He teaches and educates in his teaching, expecting students to surpass himself.

He was a man of few words, kind-hearted, indifferent to fame and fortune, and diligent and thoughtful, and was deeply respected and praised by his colleagues and students.

He has long been engaged in the teaching and research of structural mechanics, shell structure, finite element and variational principle. He has published 21 books and 235 academic articles. Participated in the formulation of the "Design Regulations for Reinforced Concrete Thin Shell Structures" issued and implemented by the Ministry of Construction in 1998.

His representative works include Structural Mechanics, Variational Principle, Finite Element and Shell Analysis, and New Finite Element Theory. The first scientific research achievements include generalized coordination element, partition and parametric variational principle, partition mixed element, analytic test function method, quadrilateral area coordinate method, etc. A novel solution was proposed to solve difficult problems such as shear locking and distortion sensitivity.

Long Yuqiu (Fool Li) is a senior academician of the Chinese Academy of Engineering, a well-known Chinese civil engineering expert and structural mechanics expert. He is a native of Longtang Township, Meicheng Town, Anchachihua County, Hunan Province. In 1944, he was admitted to the Guizhou branch of Jiaotong University (now Southwest Jiaotong University), transferred to Southwest Associated University in 1945, and graduated from Tsinghua University in 1948.

Professor of Tsinghua University.

In terms of finite element and variational principle, he has made a number of pioneering achievements at home and abroad, including: the principle of partition and partial energy (1980), the partition hybrid finite element (1982), the spline finite element (1984), the variational principle with optional parameters (1986), the generalized coordination element (1987, Xin Kegui [1,2]), the quadrilateral area coordinate theory (1997), the blockless rational element of thick plate laminate (1998) and the analytical test function finite element (2002).

In terms of shell calculation theory, he founded the force method for column-shell and folded plate (1962), the perturbation method for stress concentration in thin shell (1965), and the new finite element method for thin shell (1993).

Remarkable results have been achieved in engineering application: the scientific research results have been compiled into the "Thin Shell Design Regulations" of the Ministry of Construction, which plays a guiding role in the design and construction of shell engineering in China; In 1963, he studied the stress concentration problem of submarine thin-shell emithole, and established the analysis method of thin-shell large-orifice, which improved the design level. He is the author of monographs such as "New or Finite Element Theory", "Basis and Progress of Energy Principle", "Variational Principle, Finite Element and Shell Analysis", "Structural Mechanics", "Structural Mechanics Course", "Introduction to Shell Structure" and other textbooks.

[1] Dragon Ball, Xin Kegui. Generalized coordination element[J].Journal of Civil Engineering. 1987(01）.

2] Dragon Ball, Xin Kegui. Energy solution method for polygonal cross-section frame-tube structure[J].Journal of Building Structures. 1985(03）.

3] Dragon Ball, Xin Kegui. Energy solution method for polygonal cross-section frame-tube structure[J].Journal of Building Structures. 1985(03）.

4] Fan Chong, Long Yu Qiu. Spline element method for structural analysis of high-rise buildings[J].Journal of Building Structures. 1994(03）.

5] Fan Chong, Long Yu Qiu. Analysis of stress intensity factor of V-shaped incision by zonal mixed finite element method[J].Journal of Hydraulic Engineering. 1991(09）.

6] Cen Song, Long Yuqiu. Quadrilateral thick and thin plate universal element using area coordinates[J].Engineering mechanics. 1999(02）.

7] Cen Song, Long Yuqiu, Yao Zhenhan. A new type of composite laminate element based on first-order shear deformation theory[J].Engineering mechanics. 2002(01）.

8] Cen Song, Long Yuqiu, Yao Zhenhan. Post-hybridization treatment of internal force solution of displacement plate element[J].Engineering mechanics. 2001(03）.

9] Long Zhifei, Cen Song, Long Yuqiu, et alPrinciple of Parametric Variation in Thin Plate Hamilton[J].Engineering mechanics. 2004(04）.

10] Cen Song, Long Zhifei, Luo Jianhui, et alThin plate Hamiltonian solution system and its variational principle[J].Engineering mechanics. 2004(03）.

11] Chen Xiaoming, Cen Song, Long Yuqiu, et alTheory of area coordinates of quadrilateral elements with two components[J].Engineering mechanics. 2007(s1）.

12] Cui Jinghao, Yuan Si, Xin Kegui, et alThick and diligent is my teacher, Professor Yuqiu was elected as an academician of the Chinese Academy of EngineeringEngineering mechanics. 1995(03）.

- Department of Civil Engineering, Tangshan Jiaotong University (now Southwest Jiaotong University), First Year- Southwest Associated University, Department of Civil Engineering, Second Year.

Tsinghua University, Department of Civil Engineering, 3rd and 4th year, graduate- Tsinghua University, Department of Civil Engineering, graduate student and assistant researcher- Tsinghua University, Department of Civil Engineering, assistant researcher.

Assistant Professor, Department of Civil Engineering, Tsinghua University.

Lecturer, Department of Civil Engineering, Tsinghua University.

Today, he is a professor in the Department of Civil Engineering, Tsinghua University.

Academician of the Chinese Academy of Engineering.