摘要
将正交异性材料看成理想塑性材料，在无量纲应力屈服准则及与之相关的流动法则下，利用特征场的一般方法，建立了平面应力问题的特征场．一阶拟线性方程组可能为双曲型，抛物型，椭圆型．在双曲型区域两族特征线互不正交．应力场的特征线与速度场的特征线互相重合．当材料退化为各向同性材料时，推导的结果能退化为希尔解或索柯洛夫斯基解．
The mechanical behavior of the orthotropic materials is regarded as perfectly plastic in order to simplifythe analysis. The characteristic fields of plastic plane stress problems are construeted. By following dimensionlessStress Yield Criterion and the associated plastic flow rule. The quasi-linear differential equations may be hyperbolic,parabolic and elliptic. Two fdmilies Of characteristic lines in the hyperbolic region are not orthogonal. The character-istic lines of velocity coincide with those of stress field. When the orthotroPic materials degenerate to isotropic ones,the solution presented in this paper can degenerate tO that presented by Hill R or by Sokolovskii V V.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
1999年第3期68-70,共3页
Journal of Harbin Institute of Technology
