mean strain meaning in English

平均应变

A mean strain or prestrain, as in fig. 83, can under certain conditions reduce the subsequent fatigue life .
一个如图83所示的平均应变或预应变，在某种情况下，能够缩短以后的疲劳寿命。
If the two - equation turbulence models employ a linear relationship between the reynolds stress and the mean strain - rate tensors , this relationship is known as the generalized boussinesq model , the two - equation models can be extended for a wider range of applicability by developing more advanced nonlinear algebraic relations between the stress tensor and the mean - velocity gradient and the turbulent scales , this is known as explicit algebraic stress models ( easm )
另一个是构成模型，即决定应力张量、应变率张量和两个湍流尺度因子之间的函数关系式，它决定了雷诺应力。如果构成模型是线性的，则为boussinesq涡粘模型( evm ) ，如果构成模型是非线性的代数关系式，则为显式代数应力模型( easm ) 。