Spurious zero energy modes are present in the stress element, but it is proved that non spurious zero energy mode is present in the global analysis of the whole structure.
分析了应力元的多余零能模式，并证明了整体分析中对多余零能模式的消弭；
Spurious zero energy modes are present in the stress element, but it is proved that non spurious zero energy mode is present in the global analysis of the whole structure.
分析了应力元的多余零能模式，并证明了整体分析中对多余零能模式的消弭；
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