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断裂力学经过20年左右时间研究和发展,在基础理论和实验技术方面已初具规模,并在实际工程中得到一定的应用。首先,线弹性断裂力学在高强度钢和超高强度钢的脆性断裂,疲劳裂纹扩展和应力腐蚀方面成功地得到运用,由于线弹性断裂力学是以线弹性理论为基础的,故其应用是有其局限性,对中低强度钢大范围屈服后断裂分析已不适用。随着屈服后断裂力学的发展,断裂力学的应用范围已扩大到高韧性的中低强度钢。屈服后断裂力学对压力容器、球罐、
Fracture mechanics after 20 years of time research and development, in the basic theory and experimental techniques has begun to take shape, and in practical engineering has been a certain application. First of all, the linear elastic fracture mechanics in the high-strength steel and ultra-high-strength steel brittle fracture, fatigue crack growth and stress corrosion has been successfully used, as linear elastic fracture mechanics is based on linear elasticity theory, so its application is Its limitations, on the low-mid strength steel after yield fracture analysis is not applicable. With the development of fracture mechanics after yield, the application of fracture mechanics has been extended to medium and low strength steels with high toughness. Post-yield fracture mechanics of pressure vessels, spherical tanks,