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and needed a certain time at a given temperature [34,35]. 3.2 Establishing and validating constitutive model In order to express the relationship among the strain rate, flow stress and temperature... materials, Eq. (2) is used to describe the relationship between the strain rate and flow stress. The hot deformation conditions under which the different constitutive equations applied are provided in Eq......
words: GFRP anti-floating anchors; counter-pulled test; external anchorage; relationship between load and slip; average bond strength 随着城市地下空间的开发利用,地下建(构)筑物的基础埋深不断加大,抗浮问题变得越来越突出.相比于降水,压载加重,抗浮桩等抗浮技术措施,抗浮... Mechanics and Engineering, 2010, 29(2): 394-400. [16] Hyett A J, Bawden W F, Macsporran G R, et al. A constitutive law for bond failure of fully-grouted cable bolts using a modified hoek cell[J......
Trans. Nonferrous Met. Soc. China 24(2014) 1407-1413 Constitutive modeling of hot deformation behavior of X20Cr13 martensitic stainless steel with strain effect Fa-cai REN, Jun CHEN, Fei CHEN.... The material constants of α and n, activation energy Q and A were calculated as a function of strain by a fifth-order polynomial fit. Constitutive models incorporating deformation temperature, strain......
and constitutive relationship of Al-Zn-Mg alloy containing small amount of Sc and Zr during hot deformation based on Arrhenius-type and artificial neural network models [J]. Journal of Alloys and Compounds... rates of 0.001-1 s-1. On the basis of compression experimental results, an accurate phenomenological constitutive equation that coupled the effects of strain rate, deformation temperature and strain......
]. Usually, the constitutive model is a mathematical representation describing the relationship among flow stress, strain, strain rate and temperature [9]. Many constitutive models have been proposed... of 2024Al-T3 alloy with respect to a wide range of strain rates (0.001-100 s-1), strains (0.1-0.5) and temperatures (573-773 K). The prediction capabilities of various constitutive models for 2024Al alloys......
]. Composites Science and Technology, 1999, 59(5): 737-747. [20] Wang Z X, Liu X F, Xie J X. Constitutive relationship of hot deformation of AZ91 magnestium alloy [J]. Acta Metallurgica Sinica, 2008, 44(11...Trans. Nonferrous Met. Soc. China 24(2014) 632-640 Creep mechanism and creep constitutive model of aluminum silicate short-fiber-reinforced magnesium matrix composite Jun TIAN, Zi-qiong SHI School......
behavior of the C276 alloy deformation. Fig. 5 Relationship between ln[sinh(ασ)] and ln Z parameter of C276 superalloy The constitutive equation can be obtained from putting α, Q, A, n into Eq. (1... of C276 superalloy. Key words: C276 superalloy; hot tension deformation; flow stress; constitutive equation 1 Introduction Hastelloy C276 alloy is a Ni-Cr-Mo wrought alloy that is generally considered......
on the elastic theory and generalized Kelvin constitutive model, and the function relationship between subsiding and time was solved out. Solutions were tested in actual cases. The results show that, although...与蠕变曲线如图1所示. 图1 广义Kelvin体本构模型及蠕变曲线 Fig. 1 Constitutive model and creeping curve of generalized Kelvin model 广义Kelvin体的本构方程为  ......
strain curves of ZCK620 magnesium alloy at various temperatures with different strain rates 3.2 Strain-dependent constitutive equation The relationship between the flow stress, the strain rate..., strain rate and temperature Fig. 3 Relationship between flow stress and Zener-Hollomon parameter Then, the material constants (α, n, Q, ln A) of the constitutive equations were computed under......
on the experimental results, the relationship between ln[sinh(ασ)] and ln Z can be shown in Fig. 4. Fig. 4 Calculation of constitutive parameters Then, the values of ln A and n are the intercept and slope of lnZ-ln... s-1. The true stress-true strain curves were obtained in the tests. Constitutive equation and processing map were established. The results show that the flow stress decreases with the increase......