Calculations on Cracking Strength in Whole Process to Elastic-Plastic Materials---The Genetic Elements and Clone Technology in Mechanics and Engineering Fields

American Journal of Science and Technology

YanguiYu¹ 

[1] Principal Office, Zhejiang Guangxin New Technology Application Academy of Electromechanical and Chemical Engineering, Hangzhou, China; Wenzhou University, Wenzhou, China.

关键词: Elastic-plastic Materials;    Strain Hardening;    Strength Criterion;    Assessment Method of Crack Size;    Assessment in Whole Process;   

学科分类：工程和技术（综合）

来源: AASCIT

【 摘 要 】

For the decreasing experiments on fatigue, damage and fracture, the author bases on the principles of similar to the genetic genes in the life sciences, adopts the conventional material constants, discovers new constants to some materials of Masing’s and elastic-plastic ones which show inherent properties; uses the theoretical approach which the mathematical derivations, the mechanics analysis and the calculations and analysis of the computer; proposes some new computing models from short to long crack which are the calculable mathematic models on crack problem as the threshold size, the transitional size and the critical ones; and sets up new computing formulas on the strength in different stages; provides the calculating criterions which are defined as the crack size and the stress intensity factor at each stage and in the whole process; and puts forward two kinds of the assessment methods in each stage and in whole process. In addition, to supplement again the comprehensive figure of the material behaviours; to give yet a detailed calculating example applied two of kinks for a safety assessment. This works may be there are practical significances for make linking and communication among the modern the material subject, fracture mechanics and damage mechanics; for to promote engineering applications.

【 授权许可】

Unknown