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研究了多孔材料致密化过程中孔隙和基体的塑性流动行为;建立塑性流动法则和相关的本构关系对多孔材料致密化技术的发展具有参考价值;分析了多孔材料塑性孔隙度和理想塑性材料的孔隙塑性流动法则;考虑硬化力为塑性应变和温度的函数,推导了应变硬/软化塑性材料热弹塑性本构关系,为实现粉末材料塑性成形的计算机模拟提供依据。
The plastic flow behavior of pores and matrix during densification of porous materials was studied. The establishment of plastic flow laws and the related constitutive relations have reference value for the development of densification of porous materials. The plastic porosity of porous materials and the plasticity of ideal plastic materials The law of plasticity of porous plastic flow, the thermo-plastic constitutive relation of strain hardening / softening plastic material is deduced considering the hardening force as a function of plastic strain and temperature, which provides the basis for the computer simulation of plastic forming of powder material.