在应力偏张量主值三角函数解的基础上，推导了应力空间内主应力和主方向的通用解析解公式。
Based on the stress partial tensor's trigonometric function answer, the main stress and main direction are established in parsed currency formula, and some special answers and examples are discussed.
取斜向前偏垂直的分区剪三角反曲线层次。
通过研究三角形多面体模型节点偏导数的计算方法，对目标函数进行线性化处理，形成了计算机自动迭代修改模型体的技术。
By researching the partial derivative calculation of model vertex and linearity treating field function using Taylor series, the 3D models can be changed via automatic optimization;
应用推荐