提出了应力张量与位移梯度张量的对偶关系。
A dual relationship between stress tensor and displacement grads tensor is presented.
还可考虑因垂直梯度与水平支座一起发生的垂直位移，以及因大梁一端转动引起的垂直位移。
Vertical movement due to vertical grade with horizontal bearings and vertical movement due to girder end rotation may also be considered.
基于梯度塑性理论，研究了应变软化阶段的刚度劣化对剪切带内部的局部应变及相对剪切位移的影响。
Distributed shear strain and displacement in localized shear band were investigated considering degraded stiffness in the strain-softening process based on gradient-dependent plasticity.
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