A Plastic Limit Analysis of Beams in Consideration of Hardening Effect
Cheng Zhaoxiong Huang Yijun (Beijing Institute of Tecnology, Beijing, 100081) Peng Ruhai (Dept. of Basic Courses, East China Shipbuilding Institute, Zhenjiang, Jiangsu, 212003)
Advances an improving rigid nonlinearity hardening approximate model of the constitutive relations using the traditional theory of plastic limit analysis. Compared with available rigid plastic simplified models this new one conforms to reality better. And it is more reasonable. In the limit analysis of the beam, the authors got a formula of the limit bending moment by using the new model. The calculation of the rectangular section beam shows that the traditional formula is a special case of the result. Lastly, a simplified formula for convenience in engineering is given. This model also can be used in the limit analysis of the structure such as rigid frame, thin plate, etc.