So if you have some region of space S and you call its boundarysurface S and you let n be the normal vector that goes out of the region R.
如果存在一些区域空间,边界为曲面,定义n为指向区域R外的法向量。
2
An anisotropic damage model for concrete subjected to compressive fatigue load is developed based on continuum damage mechanics and the concept of boundarysurface.
基于边界面概念和损伤力学理论，建立了混凝土受压各向异性损伤模型。
3
A function of distance between initial stress strain point and point at state boundarysurface is adopted to simulate stress strain behaviour of soil in condition of small strain.