Some constitutive equations of damage problems are discussed based on the general constitutive form of irreversible thermodynamic processes, and the corresponding damage variational functional, from which the FEM formualtion can be derived,is obtained from the augmented variational functional.
从不可逆热力学过程的一般本构形式出发，具体讨论了弹塑性损伤和蠕变损伤的本构方程，并由增广变分泛函给出了相应的损伤变分泛函及有限元列
The zoomed image is found by minimizing the variational functional in the wavelet domain which uses the Besov norm to measure the regularity of the image.
该算法的思想是先构造一个用Besov范数估计图像正则性的变分泛函,然后在小波域中最小化变分泛函得到放大图像。
Sufficient conditions are established for the oscillation of systems of second order partial differential equations with functional arguments.
建立了具泛函变元的拟线性偏微分系统解振动的充分条件。
