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疲劳裂纹扩展位错模型
释义
疲劳裂纹扩展位错模型
Encyclopedia
工学
疲劳裂纹扩展力学模型
释
dislocation model of fatigue crack growth
疲劳裂纹扩展位错模型
在外加载荷作用下,裂纹尖端附近的材料会发生屈服,说明裂纹前端塑性区有位错的产生和运动。由应力集中形成的某些力会把位错移出塑性区,而与材料弹性极限相关的摩擦力则阻止位错的这种移出行为。基于这种力的平衡关系,导出裂纹尖端在每个循环中的位移量,当位移总和达到某个临界值时,裂纹便向前扩展并释放出循环过程中的能量,得到相应的裂纹扩展速率与外界功的函数表达式。
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Integration of culture and technology
integration of distributed electric resource
integration of documents and records
integration of European higher education
Integration of foreign cultures
integration of industry and city
integration of information technology in teacher education
integration of informatization and industrialization
integration of international production
integration of mining,dumping and reclamation
integration of multiple opera tunes in one troupe
Integration of Rare Medical Books
integration of school learning and workplace learning
integration of sender and receiver
Integration of Social Historical Materials of Pingtan in Suzhou, China
integration of streamlining administration, delegating power and strengthening regulation
integration of system
integration of three networks
integration of urban and rural education
integration of urban design element
integration of water and fertilizer for irrigated grassland
integration of Xinjiang Production and Construction Corps and Xinjiang Uygur Autonomous Region Government
integration on demand
integration on manifolds
integration operator
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