In this paper, a new quadrilateral thin-thick plate bending element with only 12 degrees of freedom, TACQ, is developed by using the area coordinate method.
本文采用四边形面积坐标，利用假设剪切应变场方法和广义协调理论构造出一个具有12个自由度的四边形厚薄板通用弯曲单元TACQ。
On such basis, an incremental finite element formulation for nonlinear vibration of moderately thick and thin plate is presented.
据此，建立了中厚度-薄板非线性振动的增量有限元列式。
An element H13 is obtained by revising the stress parameters, which enables avoiding the locking phenomenon and gives better results for either thin or moderately thick plate.
通过适当调整应力参数而得到的单元h _(13)避免了上述困难，无论对薄板还是中厚板均给出了良好的结果。
The results of numerical tests show that the element RPAQ is free from shear locking, insensitive to mesh distortion and very accurate and stable for both thin plate and thick plate.
进行了一系列数值例题测试，表明单元RPAQ能自动消除闭锁现象，在由薄板到厚板的不同情况下，在各种网格畸变的情况下，都能体现出良好的精度和数值稳定性。
The results of numerical tests show that the element RPAQ is free from shear locking, insensitive to mesh distortion and very accurate and stable for both thin plate and thick plate.
进行了一系列数值例题测试，表明单元RPAQ能自动消除闭锁现象，在由薄板到厚板的不同情况下，在各种网格畸变的情况下，都能体现出良好的精度和数值稳定性。
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