| Nonlinear Constitutive Equation for Green Sand Considering the Tri-axial Compression Behavior |
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| 引用本文： | 曾攀 孔劲. Nonlinear Constitutive Equation for Green Sand Considering the Tri-axial Compression Behavior[J]. 清华大学学报, 2004, 9(5): 560-564 |
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| 作者姓名： | 曾攀 孔劲 |
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| 作者单位： | DepartmentofMechanicalEngineering,TsinghuaUniversity,Beijing100084,China |
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| 基金项目： | Supported by the National Natural Science Foundation of China (No. 10172054) |
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| 摘 要： | ![]()
The compression characteristics of green sand were investigated experimentally, including the squeezing and yielding during deformation. An expression was developed for the transient compression modulus of sand during compression. Based on the hypothesis put forward of the compression state, the differential equation for the nonlinear constitutive equation was deduced by introducing a move-yield potential function. The state constitutive equation under the tri-axial experiment is further studied according to the sand attributes, considering the differential form of Hooke‘s law and the Mohr-Coulomb condition. The related experiment data are applied to verify the proposed constitutive model of sand.
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| 关 键 词： | 海绿石砂 三轴试验 非线性本构方程 型砂 弹塑性材料 铸造 |
Nonlinear Constitutive Equation for Green Sand Considering the Tri-axial Compression Behavior |
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| ZENG Pan KONG Jin. Nonlinear Constitutive Equation for Green Sand Considering the Tri-axial Compression Behavior[J]. Tsinghua Science and Technology, 2004, 9(5): 560-564 |
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| Authors: | ZENG Pan KONG Jin |
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| Affiliation: | ZENG Pan KONG Jin Department of Mechanical Engineering,Tsinghua University,Beijing 100084,China |
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| Abstract: | ![]()
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| Keywords: | green sand tri-axial experiment constitutive equation |
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