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damaged material
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  受损材料
     The constitutive equation for damaged material and two damage strain energy release rates are also discussed.
     文中还讨论了受损材料的本构方程和两种损伤应变能释放率。
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  “damaged material”译为未确定词的双语例句
     RESEARCH ABOUT THE FRACTURE STRESS OF THE DAMAGED MATERIAL
     考虑损伤时材料的断裂应力
短句来源
     At present, the study of damage mechanics still mainly concentrates on problems of damaged material and structrure under the static load. These are seldom researches on nonlinear dynamic damage of the material under the dynamic load.
     目前损伤力学的研究工作主要还集中在静力荷载作用下材料的各种损伤问题,对动力荷载作用下材料的非线性动力损伤问题研究的还不多。
短句来源
     In accordance with the energy definition, the damage evolution equation and the constitutive equation of the damaged material are established, which are identical with the experimental data of a low carbon steel. The damage criterion to which this approach leads is equivalent to the fourth strength theory of material mechanics.
     还建立了相应的损伤演化方程和损伤材料的应力-应变本构方程,由其获得的损伤准则等价于第四强度理论。
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  相似匹配句对
     Material
     实验材料
短句来源
     MATERIAL
     原料
短句来源
     RESEARCH ABOUT THE FRACTURE STRESS OF THE DAMAGED MATERIAL
     考虑损伤时材料的断裂应力
短句来源
     Research on Light-repair Technology in Composite Material Damaged
     复合材料损伤的光修复技术研究
短句来源
     and damaged severely at the 7d.
     7d后则下降更为严重,与对照组比较有显著差异(P<0.01)。
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  damaged material
By the assumption that the mechanical relaxation time is equal to zero the thermo-elastic-plastic (rate independent) response of the damaged material is accomplished.
      
The process leading to alligatoring was analyzed as three sub-processes: the evolution of voids, the formation of an initial crack, and the damaged material finally fracturing.
      
It is demonstrated that in the case of a complex stress state, the damaged material is modeled by a continuous physically nonlinear medium.
      
In the second case, the damaged material is modeled by an isotropic elastic medium with considerably reduced values of strength and rigidity characteristics, and variations in the pressure on the failure front are also determined.
      
Our conclusion is that the initial titanium ion implant into sapphire exists in both the Ti2+ and Ti3+ charge states and is located in a range of sites in the radiation-damaged material.
      
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The application of ultrasonic technique to a new area, Damage Mechanics, for evaluating the plastic damage characterized by micro-defects in metal is tentatively proposed. The relationship between the isotropic damage parameter D and the sound velocity in damaged material is found. The plastic damage of three different nodular case iron specimens were measured.

本文试图将超声技术应用于新的领域——损伤力学,去估价金属材料的微观缺陷(由塑性变形引起的)所产生的损伤.建立了超声参数与材料损伤变量D之间的联系,并用这个技术测量了三种球墨铸铁的塑性损伤.

In this paper the dynamic elastic-plastic field near a crack-tip running in a strain-damage material is investigated. The medium is assumed to obey the J2 flow theory and the damage rule is given ffsymptolically in a form like power-law strain softening. For the plane strain problem the constitutive relation is Derived and much simplified for the case of poisson's ratioThe asymptotic equation of the dynamic elastic-plastic field are given and solved for the mode I crack.The displacement, strains,...

In this paper the dynamic elastic-plastic field near a crack-tip running in a strain-damage material is investigated. The medium is assumed to obey the J2 flow theory and the damage rule is given ffsymptolically in a form like power-law strain softening. For the plane strain problem the constitutive relation is Derived and much simplified for the case of poisson's ratioThe asymptotic equation of the dynamic elastic-plastic field are given and solved for the mode I crack.The displacement, strains, and stresses are expaned in series oftherefore the asymptotic behaviour of the field is revealed, The results show thatat the crack tip the strain possess the bgarcthmic singularitywhile the stress is like

本文研究了在应变损伤材料中的动裂纹尖端弹塑性场假定介质服从J_2流动理论,且损伤规律以幂函数应变弱化的形式渐进地给出。对于平面应变问题导出了本构关系,并在泊松比V=1/2的情况下得到简化。本文给出动弹塑性场的渐进方程,并对Ⅰ型裂纹进行了解答。位移、应变和应力被展成的级数,所以得到了场的渐进特性。结果表明,裂纹尖端的应变具有对数奇异性,而应力的量级则为。

In this paper, a deformation theory of plasticity for damaged materials is proposed. An asymptotic expression for H near a crack tip is obtained. Finally, the stress and strain fields near the crack tip are presented.

本文导出了损伤材料的全量理论,导出了全量公式中H的渐近表达式;最后得到损伤材料平面应变条件下的裂纹尖端的应力应变场。

 
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