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中文摘要：
研究了强阻尼波动方程的H^1-Galerkin混合有限元方法的超收敛性．借助于协调线性三角形元已有的分析估计式，直接利用插值算子代替原始变量u的Ritz投影和应力变量P的Ritz．Volterra投影，对半离散和全离散格式，得NTu在H^1（Ω）模和P在H（div；Ω）模意义下比以往文献高一阶的超逼近和超收敛结果．
英文摘要：
In this paper, the superconvergence analysis of H^1-Galerkin mixed finite element method for strongly damped wave equations is studied. By virtue of the technique of interpolation operator instead of Ritz projection of the original variable u and Ritz-Volterra projection of the stress variable p, the superclose and superconvergence results in H^1 （Ω） norm for u and H（div; Ω） norm for p for both semidiscrete and fully discrete schemes are derived through applying some error estimates of conforming linear triangular finite element.
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