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PARAM, CURVSHL2

PARAM, CURVSHL2

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PARAM, CURVSHL2

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Parameter

Values

Description

CURVSHL2

<NO, YES>

Default = NO

YES - Activates a correction to strain and stress calculation for second order shell elements (CQUAD8, CTRIA6) that takes into account strong curvature of the shell (relative to shell thickness).

Note:

1.The correction, when activated, is dependent upon relative “strength” of the curvature, hence it will be zero for flat shell elements.
2.The correction is applied only to post-processing of the results (stress and strain calculation). The element stiffness matrix is not affected, hence the displacement solution and global forces remain unaffected.
3.The correction is not applied to composite materials and shells with membrane-bending coupling (MID4 on PSHELL). Such entities may be present in the finite element model, yet their strain and stress calculation then uses standard calculation for thin shells (and a warning message is issued).