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Fanph鐵蟲 (小有名氣)
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[求助]
請大神詳細(xì)解釋下ansys中solid185單元的keyopt(2) 已有1人參與
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solid185單元的KEYOPT(2)如下: KEYOPT(2) Element technology: 0 -- Full integration with method (default) 1 -- Uniform reduced integration with hourglass control 2 -- Enhanced strain formulation 3 -- Simplified enhanced strain formulation 請幫忙解釋下,這些設(shè)置都是什么意思,用在什么地方。 我作焊接仿真,這個應(yīng)該怎么設(shè)置。 |
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在 ANSYS 幫助文件的理論部分有關(guān)于 solid185 單元的詳細(xì)介紹。其中對于 keyopt(2) 的說明如下: 14.185.4. Theory If KEYOPT(2) = 0 (not applicable to layered SOLID185), this element uses method (selective reduced integration technique for volumetric terms) (Hughes(219), Nagtegaal et al.(220)). If KEYOPT(2) = 1 (not applicable to layered SOLID185), the uniform reduced integration technique (Flanagan and Belytschko(232)) is used. If KEYOPT(2) = 2 or 3, the enhanced strain formulations from the work of Simo and Rifai(318), Simo and Armero(319), Simo et al.(320), Andelfinger and Ramm(321), and Nagtegaal and Fox(322) are used. It introduces 13 internal degrees of freedom to prevent shear and volumetric locking for KEYOPT(2) = 2, and 9 degrees of freedom to prevent shear locking only for KEYOPT(2) = 3. If mixed u-P formulation is employed with the enhanced strain formulations, only 9 degrees of freedom for overcoming shear locking are activated. |
鐵蟲 (小有名氣)
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