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.

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。

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By analyzing influencing factors on selection of pressing direction of automotive outer panels, the pressing direction optimization model based on the evaluation function method is created.

通过分析影响汽车覆盖件冲压方向选择的因素，建立了以评价函数法为基础的冲压方向优化模型。

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First of all, a filter, based Rayleigh function, is applied to the area for band filtering, and next, it uses eight direction Gabor filters with interval 22.

使用基于瑞利函数的滤波器对奇异点区进行带通滤波，使用间隔22。

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