CAJ | 학술논문

推导Mohr?Coulomb(M?C)和Drucker?Prager(D?P)屈服准则在不同应力状态下的表达式以及它们之间的相互关系；基于文献数据，比较两个准则描述块体非晶合金屈服行为的适应性，详细地阐述了正应力与静水压力对块体非晶合金屈服行为的影响。结果表明：静水压力对材料屈服的影响相当于一个叠加的正应力，无论是压缩还是拉伸，均对剪切屈服或断裂起抑制作用。D–P屈服准则函数描述块体非晶合晶的屈服断裂比M–C准则更好。
추도Mohr?Coulomb(M?C)화Drucker?Prager(D?P)굴복준칙재불동응력상태하적표체식이급타문지간적상호관계；기우문헌수거，비교량개준칙묘술괴체비정합금굴복행위적괄응성，상세지천술료정응력여정수압력대괴체비정합금굴복행위적영향。결과표명：정수압력대재료굴복적영향상당우일개첩가적정응력，무론시압축환시랍신，균대전절굴복혹단렬기억제작용。D–P굴복준칙함수묘술괴체비정합정적굴복단렬비M–C준칙경호。
The expressions and relationships of the Mohr?Coulomb (M?C) and Drucker?Prager (D?P) yield criteria under various stress states were derived firstly, and the yield behavior adaptabilities of bulk amorphous alloys described by the two criteria were compared based on the data of literatures. Finally, effects of normal stress and hydrostatic pressure on the yield behavior of BAAs were intelligently demonstrated. The results show that the influence of hydrostatic pressure on the yield behavior of BAAs is equivalent to a superposition of normal stress under tensile or compressive load, and either the shear yielding or fracture is inhibited by hydrostatic pressure; The D–P criterion is more suitable for explaining the yielding of BAAs than M–C yielding criterion.