1) crystallographic constitutive equation
晶体塑性本构关系
1.
Based on finite deformation rate-dependent crystallographic constitutive equation,the growth simulation of casting microporosity in a unit cell model is carried out within a range of parameters including deviation orientation,type of different slip systems activated.
基于有限变形晶体塑性本构关系及轴对称体胞模型,采用有限元的方法,分析了在不同取向偏角及不同滑移系开动,单晶高温合金中铸造微孔洞扩长的力学行为。
2.
Based on finite deformation rate-dependent crystallographic constitutive equation, the simulation of casting micro-porosity in three-dimensional unit cell model is carried out under variation in a range of parameters including triaxiality,Lode parameter,type of slip systems activated and Loading orientation.
基于有限变形晶体塑性本构关系及三维体胞模型,采用有限元的方法,分析了在不同应力三维度、不同罗德参数、不同滑移系开动及不同加载取向下,单晶高温合金中铸造微孔洞扩长的力学行为。
2) superplastic constitutive relation
超塑性本构关系
1.
The superplastic constitutive relation developed by the second author of the paper considers three types of microscopic deformation mechanisms and the grain growth process.
金泉林等提出的超塑性本构关系考虑了三种微观变形机制和晶粒生长过程,但单纯依靠实验很难准确的测定该本构关系的材料参数。
3) plastic constitutive equation
塑性本构关系
1.
The real stress-strain equation, a general yield criter ion and plastic constitutive equations for compressible sintered powder material s are determined based on the single axial compress.
通过烧结铜圆柱体试样单向压缩实验 ,确定了粉末烧结材料真实应力应变关系 ,建立了普适的粉末烧结材料屈服条件和塑性本构关系。
4) elastoviscoplastic constitutive relationship
弹塑性本构关系
1.
Several objective spins of solid cylinder torsion deformation were rendered and the large deformation elastoviscoplastic constitutive relationships were derived for the Oldroyd stress rate,the generalizing Jaumann stress rate and the stress rate with respect to the spin of the frame of deformation rate with the aid of stress-strain curve from torsion test.
研究采用实心圆轴扭转试验标定大变形弹塑性本构关系时客观应力导数的影响问题。
2.
In this paper,large deformation elastoviscoplastic constitutive relationship is discussed by the aid of torsion test with cylinder specimens.
研究了用实心圆轴扭转实验标定大变形弹塑性本构关系的问题。
3.
In the dissertation, within the framework of the principles of continuum mechanics, large deformation elastoviscoplastic constitutive relationships are defined by torsion test with cylinder specimens.
本文以连续介质力学为理论基础,研究了通过实心圆轴扭转实验资料来标定大变形弹塑性本构关系的问题。
5) thermal-plastic constitutive relation
热塑性本构关系
1.
By accounting for the effects of temperature and damage on material parameters and the coupled effects of temperature and damage on the plastic deformation, a general explicit form and a specific incremental form of a thermal-plastic constitutive relation have been obtained based on the internal variable theory.
考虑温度和损伤对材料参数的影响,计入温度和损伤对材料塑性变形发展的耦合作用,以本构关系的内变量理论为基础得到了热塑性本构关系的普适显式表达式以及增量形式的热塑性本构方程,结合在实际中有重要意义的内聚爆炸载荷作用下的球壳层裂问题,建立了含损伤热塑性球壳破裂问题的完备方程组,使用有限差分方法,完成了对问题的数值模拟,并对结果进行了分析。
6) elastoplastic constitutive relations
弹塑性本构关系
1.
Based on the numerical method of the inverse problem theory in modeling the constitutive relations of rock and soil,the numerical modeling for the elastoplastic constitutive relations of sand is studied.
基于反问题理论的岩土本构关系数值建模方法,对砂土弹塑性本构关系的数值建模进行了研究。
2.
Based on the numerical method of the inverse problem theory in modeling the constitutive relations of rock and soil, the numerical modeling for the elastoplastic constitutive relations of sand is studied.
基于反问题理论的岩土本构关系数值建模方法 ,对砂土弹塑性本构关系的数值建模进行了研究 。
补充资料：本构关系
| 本构关系 constitutive relations 反映物质宏观性质的数学模型。又称本构方程。归纳宏观实验结果，建立有关物质的本构关系是连续介质力学和流变学的重要研究课题。最熟知的本构关系有胡克定律、牛顿粘性定律（见粘度）、理想气体状态方程、热传导方程等。 建立本构关系时，为保证理论的正确性，须遵循一定的公理 ，即所谓本构公理 。例如纯力学物质的本构公理有三：确定性公理(物体中的物质点在时刻t的应力状态由物体中各物质点的运动历史唯一确定）、局部作用公理（物体中的物质点的应力状态与离开该物质点有限距离的其他物质点的运动无关）和客观性公理（物质的力学性质与观察者无关）。若考虑更复杂的情况，本构公理的数目就相应增多。求解连续介质动力学初边值问题，本构关系是不可少的；否则就无法把握所研究连续介质的特殊性，在数学上表现为控制方程不封闭，其解不能唯一确定。建立物质的本构关系是流变学的重要任务，可通过实验方法、连续介质力学方法和统计力学的有机结合来完成。然而，尚未找到一个普适的本构关系，需根据研究对象和流动形态选用合适的本构关系。理性力学除对本构关系进行极为一般的研究外，还对弹性物质、粘性物质、塑性物质、粘弹性物质、粘塑性物质、弹塑性物质以及热和力耦合、电磁和力耦合、热和力以及电磁耦合等物质的本构关系进行具体研究。 |
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参考词条