Results also show that the scale effect in plane stress state is slightly stronger than that in plane strain state.
并发现在平面应力状态下，梁的梯度效应略强于平面应变状态。
Plane strain state is familiar in geotechnical engineering, and estimating the principal stress in the plane strain state is very complicated.
土的平面应变是岩土工程中常见的状态，其中零应变方向的主应力是十分复杂的。
Its efficiency was demonstrated by computing the limit load factor and the collapse state for some plane stress and plain strain problems.
通过计算平面应力和平面应变问题的极限荷载因子和相应的坍塌机构，验证了算法的有效性。
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